Updated on 2025/11/11

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写真a

 
Akihiro Sato
 
Organization
Graduate School of Data Science Department of Data Science Professor
School of Data Science Department of Data Science
Title
Professor
Contact information
メールアドレス
Homepage
https://www.researchgate.net/profile/Aki-Hiro-Sato
Other name(s)
SATO, Aki-Hiro
Profile

Aki-Hiro SATO works as a Professor at the Department of Data Science, Graduate School of Data Science. Aki-Hiro SATO graduated from Tohoku University, Japan, in 1997 and received a Doctor of Information Sciences in Graduate School of Information Sciences from Tohoku University, Sendai, Japan 2001. He worked with Dr. H. Takayasu and Dr. Y. Sawada on stochastic processes and nonlinear dynamics with applications in financial markets and agent-based modeling during his Ph.D. studies. From 2000 to 2001, he worked as a Doctoral Fellow of the Japan Society for the Promotion of Science at the Research Institute of Electrical Communication of Tohoku University. From 2001 to 2006, he worked as a Research Associate at the Graduate School of Informatics, Kyoto University. He was an Assistant Professor at the Graduate School of Informatics, Kyoto University, Kyoto, Japan, from 2007 to September 2017. He was a research fellow at Canon Institute for Global Studies from February 2015 to December 2017. He was a Project-Specific Associate Professor at the Graduate School of Informatics, Kyoto University, Kyoto, Japan, from October 2017 to March 2019. He has been a PRESTO Researcher at Japan Science and Technology Agency since October 2015, a Project Professor at Yokohama City University since April 2019, and a Guest Professor at Statistical Research and Training Institute, Ministry of Internal Affairs and Communications. A.-H. Sato's research is concerned with issues of microscopic dynamics and statistical properties in complex socio-economic systems. His research methodology is of data-driven investigation, recently enabled by the development and spread of information and communication technology. From a practical point of view, risk assessment of complex socio-economic systems is a crucial issue in making our decisions in actual environments. A.-H. Sato's current interests are in understanding both external and internal environments of our society, such as cognitive patterns and collective response to external fields such as financial markets, production-consumption of goods and services driven by demand-supply imbalance, risk assessments under uncertain environments, and so forth. He attempts to shed light on these problems from viewpoints of similarity, causality, and universality. His recent other interests are related to the data-driven system design to rebuild our society from the man-machine point of view based on Grid Square statistics.

External link

Degree

  • Doctor of Information Science ( 2001.3   Tohoku University )

Research Interests

  • stochastic processes

  • Agent-based models

  • Applied Data-Centric Social Sciences

  • data-driven design

  • econoinformatics

Research Areas

  • Humanities & Social Sciences / Design  / Data-driven design

  • Informatics / Statistical science  / Grid square statistics, statistical inference, spatial statistics

  • Informatics / Computational science

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Social systems engineering

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Safety engineering

Education

  • Tohoku University   Graduate School of Information Sciences

    1997.4 - 2001.3

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    Country： Japan

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  • Tohoku University   Faculty of Engineering

    1994.4 - 1997.3

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    Country： Japan

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Research History

  • Laws, Basic Guidelines and Guidelines for Policy Evaluation, Ministry of Internal Affairs and Communications   advisor

    2024.1

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  • Research Institute for World Grid Squares   representative director

    2020.11

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    Country：Japan

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  • Yokohama City University   Graduate Graduate School of Data Science   Professor

    2020.4

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  • Statistical Research and Training Institute   Guest Professor

    2019.5

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  • Yokohama City University   International College of Arts and Sciences   Project Professor

    2019.4 - 2020.3

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  • Kyoto University   Graduate School of Informatics   Program-Specific Associate Professor

    2017.10 - 2019.3

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  • Japan Science and Technology Agency   PRESTO   PRESTO Researcher

    2015.10 - 2020.3

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    Country：Japan

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  • Canon Institute for Global Studies   Research Fellow

    2015.2 - 2017.12

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  • Kyoto University   Graduate School of Informatics   Assistant Professor

    2007.4 - 2017.9

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  • Kyoto University   Graduate School of Informatics   Research Associate

    2001.4 - 2007.3

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  • Japan Society for the Promotion of Science   Research Fellow

    1999.12 - 2001.3

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Professional Memberships

Committee Memberships

  • 日本測量技術協会   ISO/TC 211国内委員会幹事  

    2025.6   

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    Committee type：Academic society

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  • 2025 the 10th International Conference on Big Data Analytics.   Technical Committee Member  

    2024.11 - 2025.3   

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    Committee type：Academic society

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  • Minstry of Internal Affairs and Communications   ビッグデータ等の利活用推進に関する産官学協議のための連携会議人流データ利活用研究会構成員  

    2024.4   

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    Committee type：Government

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  • 情報・システム研究機構   統計数理研究所・共同利用委員会委員  

    2023.6 - 2025.5   

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    Committee type：Academic society

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  • International Organization for Standardization   TC69 SC8 AHG1 "Grid Square Statistics" Convenor  

    2022.12 - 2023.6   

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    Committee type：Academic society

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  • 2022 IEEE International Conference on Big Data (2022 IEEE Big Data)   Special Session Co-Chair  

    2022.6 - 2022.12   

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    Committee type：Academic society

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  • Ministry of Internal Affairs and Communications   Member of Working Group on Observation Data Utilization  

    2021.6 - 2022.3   

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    Committee type：Government

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  • The Enginnering Academy of Japan   Committee member of the Science and Technology Innovation Review Committee for Post-Corona Era  

    2020.10 - 2021.3   

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    Committee type：Academic society

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  • Ministry of Internal Affairs and Communications   Member of the Working Group on Observation Data Utilization  

    2020.9 - 2021.3   

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    Committee type：Government

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  • Japanese Association for Promoting Quality Assurance in Statistics   Vice Chairman, Section 12 Subdivision Committee  

    2019.12   

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    Committee type：Academic society

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  • Japanese Association for Promoting Quality Assurance in Statistics   Vice Chairman, Section 13 Subdivision Committee  

    2019.12   

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    Committee type：Academic society

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  • 総務省統計研究研修所   「統計研修の高度化に資する委託研究」検討会委員  

    2017.10 - 2018.3   

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    Committee type：Government

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  • 2016 IEEE International Conference on Big Data (IEEE Big Data 2016)   Workshop Chair  

    2016.6 - 2016.12   

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    Committee type：Academic society

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  • 2015 IEEE International Conference on Big Data (IEEE Big Data 2015)   Proceedings Co-Chair  

    2015.6 - 2015.12   

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    Committee type：Academic society

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  • 日本規格協会   ISO/TC 69 国内対策委員  

    2015.4   

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    Committee type：Academic society

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  • システム制御情報学会   論文編集委員  

    2011.4 - 2013.3   

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    Committee type：Academic society

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  • 情報処理学会   数理モデル化と応用（TOM) 論文編集委員  

    2010.4 - 2016.3   

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    Committee type：Academic society

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  • 日本物理学会   領域11役員  

    2008 - 2009   

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    Committee type：Academic society

    日本物理学会

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  • 情報処理学会   論文編集委員  

    2005 - 2008   

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    Committee type：Academic society

    情報処理学会

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  • 電子情報通信学会   査読委員  

    2005   

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    Committee type：Academic society

    電子情報通信学会

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Papers

  • Adaptive Segmentation and Statistical Analysis for Multivariate Big Data Forecasting Reviewed

    Desmond Fomo, Aki-Hiro Sato

    Big Data and Cognitive Computing   9 ( 11 )   268 - 268   2025.10

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    Forecasting high-volume, univariate, and multivariate longitudinal data streams is a critical challenge in Big Data systems, especially with constrained computational resources and pronounced data variability. However, existing approaches often neglect multivariate statistical complexity (e.g., covariance, skewness, kurtosis) of multivariate time series or rely on recency-only windowing that discards informative historical fluctuation patterns, limiting robustness under strict resource budgets. This work makes two core contributions to big data forecasting. First, we establish a formal, multi-dimensional framework for quantifying “data bigness” across statistical, computational, and algorithmic complexities, providing a rigorous foundation for analyzing resource-constrained problems. Second, guided by this framework, we extend and validate the Adaptive High-Fluctuation Recursive Segmentation (AHFRS) algorithm for multivariate time series. By incorporating higher-order statistics such as covariance, skewness, and kurtosis, AHFRS improves predictive accuracy under strict computational budgets. We validate the approach in two stages. First, a real-world case study on a univariate Bitcoin time series provides a practical stress test using a Long Short-Term Memory (LSTM) network as a robust baseline. This validation reveals a significant increase in forecasting robustness, with our method reducing the Root Mean Squared Error (RMSE) by more than 76% in a challenging scenario. Second, its generalizability is established on synthetic multivariate data sets in Finance, Retail, and Healthcare using standard statistical models. Across domains, AHFRS consistently outperforms baselines; in our multivariate Finance simulation, RMSE decreases by up to 62.5% in Finance and Mean Absolute Percentage Error (MAPE) drops by more than 10 percentage points in Healthcare. These results demonstrate that the proposed framework and AHFRS advances the theoretical modeling of data complexity and the design of adaptive, resource-efficient forecasting pipelines for real-world, high-volume data ecosystems.

    DOI： 10.3390/bdcc9110268

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  • Conversion of XYZ Tile Data into Grid Square Data and Their Application to Tsunami Risk Assessment Reviewed

    Kosuke Nakata, Aki-Hiro Sato

    Data Science Journal   23   2024.11

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    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Ubiquity Press, Ltd.  

    DOI： 10.5334/dsj-2024-053

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  • High Fluctuation Based Recursive Segmentation for Big Data

    Desmond Fomo, Aki-Hiro Sato

    2024 9th International Conference on Big Data Analytics (ICBDA)   358 - 363   2024.3

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    Authorship：Last author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/icbda61153.2024.10607308

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  • Relationship between environmental management efforts and corporate performance Reviewed

    Hiroshi Sugeno, Aki-Hiro Sato

    2022 IEEE International Conference on Big Data (Big Data)   2022.12

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    Authorship：Last author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/bigdata55660.2022.10020402

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  • Elaborating to Find the Correct Values for SDGs Indicators: Report on Evaluation Works for SDG15.4.2 (Mountain Green Cover Index) and SDG11.3.1 (Ratio of Land Consumption Rate to Population Growth Rate) Invited Reviewed

    Aki-Hiro Sato

    Oukan   16 ( 2 )   22 - 33   2022.10

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    Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.11487/trafst.16.2_22

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  • Local SDGs Challenge: A Case Study of Hinohara Village, Tokyo Invited

    ITAKURA Hiroaki, TSUBAKI Michiko, KINO Yasunobu, FUNABASHI Motohisa, HONDA Satoshi, TSUBAKI Hiroe, TANABU Motonari, KURAHASHI Setsuya, SATO Akihiro

    Proceedings of the Conference of Transdisciplinary Federation of Science and Technology   2022   A-3-4   2022

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    Language：Japanese   Publisher：Transdisciplinary Federation of Science and Technology  

    Local SDGs are based on the idea that while each region utilizes its local resources, the region's power can be demonstrated through new combinations of the inside and outside of the region. We are researching Hinohara Village as a target area for local SDGs. Hinohara Village is the only village in Tokyo, excluding the islands. Hinohara Village, which has a forest coverage of 93%, has been promoting the development of a sustainable community using the forest as a resource. Hinohara Village has years when the total fertility rate exceeds 3. We conducted interviews with the mayor of Hinohara Village and field surveys such as the Forest Toy Museum.

    DOI： 10.11487/oukan.2022.0_a-3-4

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  • Actions to SDGs by Using Self-distributed World Grid Square Statistics Platform Invited Reviewed

    Aki-Hiro Sato, Norihiro Suganami, Shigehiro Kato, Manabu Iwasaki, Shoki Nishimura

    Ouyou toukeigaku   50 ( 2-3 )   103 - 124   2021

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    Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society of Applied Statistics  

    This article discusses world grid square statistics and data, architecture design,and methods of empirical proofs of autonomous distributed data platform for world grid square statistics from four aspects of computational systems, organizational issues, relationships among data flows, and ecosystem to enable us to sustainably maintain them. Our trials for tackling SDGs by using the proposed distributed data and statistics platform in our project are addressed.

    DOI： 10.5023/jappstat.50.103

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  • Data-driven simulation for preventing COVID-19 epidemic spreads and quality of their data Invited Reviewed

    Aki-Hiro Sato

    Quality   50 ( 4 )   292 - 299   2020.10

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)  

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  • Flood Risk assessment revealed from Survey on the Water-related Disaster by Ministry of Land, Insrastructure, Transport, and Tourism Invited Reviewed

    Aki-Hiro Sato

    71 ( 1 )   23 - 28   2020.7

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)  

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  • World Grid Square coding system and World Grid Square Statistics Platform Invited Reviewed

    Aki-Hiro Sato

    63 ( 9 )   390 - 396   2019.9

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  • 世界メッシュ統計を用いたデータ共有基盤とその応用 Reviewed

    佐藤 彰洋

    ケミカルエンジニヤリング   63 ( 8 )   1 - 7   2018.7

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  • Dynamic Interaction Between Asset Prices and Bank Behavior: A Systemic Risk Perspective Reviewed

    Aki-Hiro Sato, Paolo Tasca, Takashi Isogai

    Computational Economics   1 - 33   2018.2

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer New York LLC  

    DOI： 10.1007/s10614-018-9792-y

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  • Characterization of cities based on world grid square statistics about specific properties Reviewed

    Aki-Hiro Sato

    Proceedings - 2017 IEEE International Conference on Big Data, Big Data 2017   2018-   4228 - 4237   2018.1

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    DOI： 10.1109/BigData.2017.8258449

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    Other Link： http://ieeexplore.ieee.org/document/8258449/

  • World Grid Square Data Reference Framework and its Potential Applications. Reviewed

    Aki-Hiro Sato, Shoki Nishimura, Tsuyoshi Namiki, Naoki Makita, Hiroe Tsubaki

    2018 IEEE 42nd Annual Computer Software and Applications Conference (COMPSAC)   398 - 409   2018

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE Computer Society  

    Grid square statistics – a kind of spatial statistics – is useful for compiling, disseminating, and analyzing statistics regarding anonymization. We recently proposed a natural extension of the Japanese Industrial Standards for grid square code (JIS X0410) for use worldwide. The grid square approach can produce numerous types of statistics associated with any geographic location in the world, identify any type of grid square statistics, and analyze relationships among various types of grid square statistics. This paper proposes a World Grid Square data reference architecture to manage World Grid Square statistics in a big data analytics platform following the Big Data Reference Architecture. We identify data sources such as government statistics, satellite imagery, and point data from internet providers and show how to transform World Grid Square statistics and data from grid data, point data, and polygon data. We further propose a system for providing grid square statistics in a number of context-specific areas and demonstrate their application in a data visualization and analytics platform.

    DOI： 10.1109/COMPSAC.2018.00062

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  • Disaster Risk Assessment for Resilience Improvement Reviewed

    SATO Aki-Hiro

    Oukan   11 ( 2 )   135 - 144   2017.10

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.11487/trafst.11.2_135

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  • Inference of Extreme Synchrony with an Entropy Measure on a Bipartite Network Reviewed

    Aki-Hiro Sato

    Proceedings - International Computer Software and Applications Conference   1   766 - 771   2017.9

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE Computer Society  

    DOI： 10.1109/COMPSAC.2017.150

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    Other Link： https://ieeexplore.ieee.org/document/8029696/

  • World grid square codes: Definition and an example of world grid square data. Reviewed

    Aki-Hiro Sato, Shoki Nishimura, Hiroe Tsubaki

    2017 IEEE International Conference on Big Data (Big Data)   2018-January   4238 - 4247   2017

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE Computer Society  

    DOI： 10.1109/BigData.2017.8258450

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  • Large-Scale Computation of Geographical Evaluation Indicators using Socio-Economic-Environmental Databases: A Use Case of Grid Square Statistics Reviewed

    Aki-Hiro SATO, Hiroe Enokitohge, Tae-Seok Jang, Hidefumi Sawai

    Oukan   10 ( 2 )   76 - 83   2016.10

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    The risk is evaluated as multiplication among socioeconomic value exposed to risk events, a frequency of risk events and vulnerability (socioeconomic-technological responses), which depends on time and place. We calculate 1-km grid square statistics of physical exposures in about 380,000 grids over Japan for four cases: population in 2010, firms and workers in 2012, and travelers in 2013. The exposed values and the frequencies of risky events are estimated from government statistics data and NOAA Tsunami catalog data by using a statistical inference method. We assumed a generalized Pareto distribution to infer the frequency of tsunami run-up events and estimated its parameters in each 1-km grid square from run-up events close to the grid square. Assuming that the vulnerability is set as 1 (no responses to tsunami run-up events), we estimated physical exposures defined as multiplication between an exposed value and a frequency in each 1-km grid square. We further applied our proposed method to evaluating tsunami risks of 3,916 airports used in international air transportation in 2014.

    DOI： 10.11487/trafst.10.2_76

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  • Challenges in data science: a complex systems perspective Reviewed

    Anna Carbone, Meiko Jensen, Aki-Hiro Sato

    CHAOS SOLITONS & FRACTALS   90   1 - 7   2016.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：PERGAMON-ELSEVIER SCIENCE LTD  

    The ability to process and manage large data volumes has been proven to be not enough to tackle the current challenges presented by "Big Data". Deep insight is required for understanding interactions among connected systems, space- and time-dependent heterogeneous data structures. Emergence of global properties from locally interacting data entities and clustering phenomena demand suitable approaches and methodologies recently developed in the foundational area of Data Science by taking a Complex Systems standpoint. Here, we deal with challenges that can be summarized by the question: "What can Complex Systems Science contribute to Big Data? ". Such question can be reversed and brought to a superior level of abstraction by asking "What Knowledge can be drawn from Big Data?" These aspects constitute the main motivation behind this article to introduce a volume containing a collection of papers presenting interdisciplinary advances in the Big Data area by methodologies and approaches typical of the Complex Systems Science, Nonlinear Systems Science and Statistical Physics. (C) 2016 Elsevier Ltd. All rights reserved.

    DOI： 10.1016/j.chaos.2016.04.020

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  • Measuring Activities and Values of Industrial Clusters based on Job Opportunity Data Collected from an Internet Japanese Job Matching Site Reviewed

    Aki-Hiro Sato, Tsutomu Watanabe

    2016 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA)   2199 - 2208   2016

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    This paper analyzes Grid Square Statistics on job opportunity ads collected from a Japanese Internet job matching site ("from A navi"). We confirm a relationship between the number of job opportunities and socioeconomic quantities (the population, the numbers of firms and workers) in each 1-km and 10-km Grid Square. The number of workers is the best variable to explain the number of job opportunities out of the three candidates of socioeconomic quantities in the 1-km Grid Squares, however explanatory powers of three socioeconomic quantities to the number of job opportunities are just slightly different from one another in the 10-km Grid Squares depending on observation dates. We propose that the power law exponent estimated from the daily cross-sectional relationship can be used as the production ratio of job opportunities to socioeconomic quantities. It is determined that the production ratios vary in time and show seasonality associated with the Japanese calendar. Moreover, we compute 1-km Grid Square Statistics about job opportunity data based on JIS X0410 and we clarify relationships between the number of job opportunities and the number of occupation types. We extracted industrial clusters in terms of job opportunities and the types of job occupations in Japan.

    DOI： 10.1109/BigData.2016.7840850

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    Other Link： http://orcid.org/0000-0001-7410-6324

  • Challenges in data science: a complex systems perspective Reviewed

    Carbone A, Jensen M, Sato A.-H

    Chaos, Solitons and Fractals   90   1 - 7   2016

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  • Towards High-Performance Global Air Transportation Networks Using Socioeconomic-Environmental Data Reviewed

    Hidefumi Sawai, Aki-Hiro Sato

    2016 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION (CEC)   2888 - 2895   2016

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/CEC.2016.7744154

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    Other Link： https://ieeexplore.ieee.org/document/7744154/

  • Risk Assessment for a Global Air Transport System Using Socioeconomic-Technological-Environmental Databases Reviewed

    Aki-Hiro Sato, Hidefumi Sawai

    PROCEEDINGS 2016 IEEE 40TH ANNUAL COMPUTER SOFTWARE AND APPLICATIONS CONFERENCE WORKSHOPS, VOL 1   1   572 - 581   2016

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/COMPSAC.2016.179

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    Other Link： https://ieeexplore.ieee.org/document/7552074/

  • Measuring activities and values of industrial clusters based on job opportunity data collected from an internet Japanese job matching site Reviewed

    Aki-Hiro Sato, Tsutomu Watanabe

    Proceedings - 2016 IEEE International Conference on Big Data, Big Data 2016   2199 - 2208   2016

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    This paper analyzes Grid Square Statistics on job opportunity ads collected from a Japanese Internet job matching site ("from A navi"). We confirm a relationship between the number of job opportunities and socioeconomic quantities (the population, the numbers of firms and workers) in each 1-km and 10-km Grid Square. The number of workers is the best variable to explain the number of job opportunities out of the three candidates of socioeconomic quantities in the 1-km Grid Squares, however explanatory powers of three socioeconomic quantities to the number of job opportunities are just slightly different from one another in the 10-km Grid Squares depending on observation dates. We propose that the power law exponent estimated from the daily cross-sectional relationship can be used as the production ratio of job opportunities to socioeconomic quantities. It is determined that the production ratios vary in time and show seasonality associated with the Japanese calendar. Moreover, we compute 1-km Grid Square Statistics about job opportunity data based on JIS X0410 and we clarify relationships between the number of job opportunities and the number of occupation types. We extracted industrial clusters in terms of job opportunities and the types of job occupations in Japan.

    DOI： 10.1109/BigData.2016.7840850

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  • Relationship between socioeconomic flows and social stocks: case study on Japanese air transportation Reviewed

    Aki-Hiro SATO, Hidefumi Sawai

    Evolutionary and Institutional Economics Review   12 ( 2 )   243 - 263   2015.12

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    Language：English   Publishing type：Research paper (scientific journal)  

    This article analyses socioeconomic flows and social stocks using governmental statistics data on both air transportation and demographic and economic censuses from a holistic point of view. The network analysis of the Japanese air transportation network consists of 86 domestic airports with 476 connections. Betweenness centrality and PageRank are computed for the network structure. Furthermore, a relationship between socioeconomic flows (passengers and freight) and social stocks (population, the number of workers and the number of firms) is investigated based on governmental statistics data. To determine the relationship, a gravity model, which proposes that a socioeconomic flow between two places is proportional to a power-law relationship among social stocks around the places and their geodesic distance, is assumed. Parameters with the relationship for passengers and freight are estimated, and an adequate radius distance to compute social stocks around Japanese airports is determined. This result can be used to infer socioeconomic flows from social stocks.

    DOI： 10.1007/s40844-015-0016-z

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  • ビッグデータ時代に必要な標準化 Invited

    佐藤 彰洋, 椿 広計

    統計   66 ( 9 )   32 - 38   2015.9

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    Language：Japanese   Publisher：日本統計協会  

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  • Editorial - Recent progress in intelligent and evolutionary algorithms and their applications Reviewed

    Aki-Hiro Sato, Hiroshi Kawakami, Toshihiro Hiraoka

    New Mathematics and Natural Computation   11 ( 2 )   115 - 120   2015.7

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：World Scientific Publishing Co. Pte Ltd  

    DOI： 10.1142/S1793005715020019

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    Other Link： http://www.worldscientific.com/doi/abs/10.1142/S1793005715020019

  • Econoinformatics Meets Data-Centric Social Sciences Reviewed

    Sato Aki-Hiro

    Journal of Integrated Creative Studies   1 ( 1 )   01503007-1 - 01503007-25   2015.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    Our society has been computerised and globalised due to emergence and spread of information and communications technology (ICT). This enables us to investigate our own socio-economic systems based on large amounts of data on human activities. In this article, methods of treating complexity arising from a vast amount of data, and linking data from<br />
    different sources, are discussed. Furthermore, several examples are given of studies into the applications of econoinformatics to the Japanese stock exchange, foreign exchange markets, domestic hotel booking data and international flight booking data are shown. It is the main message that spatio-temporal information is a key element to synthesise data from different<br />
    data sources.

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  • Relationship between job opportunities and economic environments measured from data in internet job searching sites Invited Reviewed

    Aki-Hiro Sato, Chihiro Shimizu, Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe

    KNOWLEDGE-BASED AND INTELLIGENT INFORMATION & ENGINEERING SYSTEMS 19TH ANNUAL CONFERENCE, KES-2015   60   1255 - 1262   2015

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1016/j.procs.2015.08.191

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  • Microdata Analysis of the Accommodation Survey in Japanese Tourism Statistics Reviewed

    Aki-Hiro Sato

    PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA   2700 - 2708   2015

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    DOI： 10.1109/BigData.2015.7364070

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  • An Epidemic Simulation with a Delayed Stochastic SIR Model Based on International Socioeconomic-Technological Databases Reviewed

    Aki-Hiro Sato, Hidefumi Sawai, Isao Ito, Kentaro Iwata

    PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA   2732 - 2741   2015

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    DOI： 10.1109/BigData.2015.7364074

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    Other Link： https://ieeexplore.ieee.org/document/7364074/

  • 航空機による人の移動とシミュレーション Invited Reviewed

    佐藤彰洋, 澤井秀文

    シミュレーション   33 ( 4 )   20 - 27   2014.12

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  • Distributed Sensor Network Based on Secondary Retail of Electricity and Usage of Data Management System Reviewed

    Aki-Hiro Sato, Maito Takagi, Tsuyoshi Nagahiro

    Transactions of the Institute of Systems, Control and Information Engineers   27 ( 7 )   268 - 278   2014.7

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    This paper proposes decentralized energy management system (DEMS) consisting of center and sensor nodes. The center node has an ability to control sensor nodes which contain sensors and controllers of electricity. We show data on electrical power consumption of Osaka Prefectural Government Sakishima Building (Cosmo tower) located at Osaka Sakishima District. We prototyped a center node and sensor nodes and measure temperature and light strength in Asia Trade Center Building located at Osaka Sakishima District. We propose an indicator of human theremal demand using temperature and light strength measured by the prototype system.

    DOI： 10.5687/iscie.27.268

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  • Multi-Objective Evolution of Airline Networks Using Socioeconomic-Environmental Data Reviewed

    Hidefumi Sawai, Aki-Hiro Sato

    2014 SCIENCE AND INFORMATION CONFERENCE (SAI)   123 - 132   2014

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  • Geographical risk assessment from tsunami run-up events based on socioeconomic-environmental data and its application to Japanese air transportation Reviewed

    Aki-Hiro Sato, Hidefumi Sawai

    2ND CIRP ROBUST MANUFACTURING CONFERENCE (ROMAC 2014)   19   27 - 32   2014

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    DOI： 10.1016/j.procir.2014.06.142

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  • Multi-Objective Optimization for Resilient Airline Networks Using Socioeconomic-Environmental Data Reviewed

    Hidefumi Sawai, Aki-Hiro Sato

    2014 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA)   2014

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  • Chaotic Method for Generating q-Gaussian Random Variables Reviewed

    Ken Umeno, Aki-Hiro Sato

    IEEE TRANSACTIONS ON INFORMATION THEORY   59 ( 5 )   3199 - 3209   2013.5

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    DOI： 10.1109/TIT.2013.2241174

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  • Special issue on latest developments in intelligent and evolutionary systems Reviewed

    Hiroshi Kawakami, Aki-Hiro Sato, Toshihiro Hiraoka

    Journal of Advanced Computational Intelligence and Intelligent Informatics   17 ( 6 )   841 - 842   2013

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    DOI： 10.20965/jaciii.2013.p0841

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  • Preface Reviewed

    Sung-Bae Cho, Aki-Hiro Sato, Kyung-Joong Kim

    Procedia Computer Science   24   1 - 2   2013

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    DOI： 10.1016/j.procs.2013.10.020

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  • A comprehensive analysis of time series segmentation on Japanese stock prices Reviewed

    Aki-Hiro Sato

    Procedia Computer Science   24   307 - 314   2013

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    DOI： 10.1016/j.procs.2013.10.055

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  • Recursive segmentation procedure based on the Akaike information criterion test Reviewed

    Aki-Hiro Sato

    2013 IEEE 37TH ANNUAL COMPUTER SOFTWARE AND APPLICATIONS CONFERENCE (COMPSAC)   226 - 233   2013

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    DOI： 10.1109/COMPSAC.2013.38

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  • Detecting Demand-Supply Situations of Hotel Opportunities: An Empirical Analysis of Japanese Room Opportunities Data Reviewed

    Aki-Hiro SATO

    Complex Sciences Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering   126   303 - 315   2012.12

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    This study analyzes the availability of room opportunity types collected from a Japanese hotel booking site. The status of opportunity type is empirically analyzed from a comprehensive point of view. We characterize demand-supply situations of room prices at each region with both room availability and average room rate. The average room rate decreases in terms of the room availability in many districts. However, it is found that the average room rate increases with respect to the room availability in some districts. This is an evidence that the theory of demand and supply is not always satisfied in Japanese hotel industry.

    DOI： 10.1007/978-3-319-03473-7_27

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  • Comprehensive analysis of market conditions in the foreign exchange market Reviewed

    Aki-Hiro Sato, Takaki Hayashi, Janusz A. Holyst

    JOURNAL OF ECONOMIC INTERACTION AND COORDINATION   7 ( 2 )   167 - 179   2012.10

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    DOI： 10.1007/s11403-012-0089-2

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  • Patterns of regional travel behavior: An analysis of Japanese hotel reservation data Reviewed

    Aki-Hiro Sato

    INTERNATIONAL REVIEW OF FINANCIAL ANALYSIS   23   55 - 65   2012.6

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    DOI： 10.1016/j.irfa.2011.06.016

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  • Impact of the Great East Japan Earthquake on Hotel Industry in Pacific Tohoku Prefectures From Spatio-Temporal Dependence of Hotel Availability Reviewed

    Aki-Hiro Sato

    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT   ( 194 )   165 - 172   2012

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    DOI： 10.1143/PTPS.194.165

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  • A method to quantify risks of financial assets: An empirical analysis of Japanese security prices Reviewed

    Aki-Hiro Sato

    MANAGEMENT, MANUFACTURING AND MATERIALS ENGINEERING, PTS 1 AND 2   452-453   469 - 473   2012

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    DOI： 10.4028/www.scientific.net/AMR.452-453.469

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  • An Analysis of Japanese Hotel Plan Availability Regionality and Seasonality Reviewed

    Minoru Noda, Aki-Hiro Sato

    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT   ( 194 )   173 - 180   2012

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  • JAPANESE INTERNATIONAL AIR TRAVEL: THE RELATIONSHIP BETWEEN FLIGHT TICKET PRICE AND GEODESIC DISTANCE Reviewed

    Aki-Hiro Sato

    2012 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION (CEC)   2012

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    DOI： 10.1109/CEC.2012.6252908

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  • Comprehensive Analysis of Information Transmission Among Agents: Similarity and Heterogeneity of Collective Behavior Reviewed

    Aki-Hiro Sato

    AGENT-BASED APPROACHES IN ECONOMIC AND SOCIAL COMPLEX SYSTEMS VI   8   3 - 17   2011

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    DOI： 10.1007/978-4-431-53907-0_1

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  • Fluctuation scaling and covariance matrix of constituents&apos; flows on a bipartite graph Reviewed

    A. -H. Sato, T. Hayashi

    EUROPEAN PHYSICAL JOURNAL B   76 ( 4 )   529 - 535   2010.8

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    DOI： 10.1140/epjb/e2010-00252-9

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  • Fluctuation scaling of quotation activities in the foreign exchange market Reviewed

    Aki-Hiro Sato, Maiko Nishimura, Janusz A. Holyst

    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS   389 ( 14 )   2793 - 2804   2010.7

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    DOI： 10.1016/j.physa.2010.03.002

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  • 外国為替市場参加者行動の特異性検出方法：特異性の伝播と同期 Reviewed

    佐藤彰洋

    情報処理学会論文誌トランザクション(CD-ROM)   2008 ( 2 )   VOL.2.NO.1,98-107   2009.4

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  • Detecting Environmental Changes through High-Resolution Data of Financial Markets Reviewed

    Aki-Hiro Sato

    NEW ADVANCES IN INTELLIGENT DECISION TECHNOLOGIES   199   595 - 603   2009

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    DOI： 10.1007/978-3-642-00909-9_57

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  • Econophysics - Physical Approach to Social and Economic Phenomena - Preface Reviewed

    Hideaki Aoyama, Yoshi Fujiwara, Hiroshi Iyetomi, Aki-Hiro Sato

    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT   ( 179 )   I - II   2009

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  • Progress of Theoretical Physics Supplement: Preface

    Hideaki Aoyama, Yoshi Fujiwara, Hiroshi Iyetomi, Aki-Hiro Sato

    Progress of Theoretical Physics Supplement   ( 179 )   i - ii   2009

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  • Similarity, Clustering, and Scaling Analyses for the Foreign Exchange Market Reviewed

    Aki-Hiro Sato, Hiroshi Sakai, Maiko Nishimura, Janusz A. Holyst

    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT   ( 179 )   38 - 50   2009

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  • Application of spectral methods for high-frequency financial data to quantifying states of market participants Reviewed

    Aki-Hiro Sato

    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS   387 ( 15 )   3960 - 3966   2008.6

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    DOI： 10.1016/j.physa.2008.01.044

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  • Characteristic periodicities of collective behavior at the foreign exchange market Reviewed

    A. -H. Sato, J. A. Holyst

    EUROPEAN PHYSICAL JOURNAL B   62 ( 3 )   373 - 380   2008.4

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    DOI： 10.1140/epjb/e2008-00158-1

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  • Application of the Beck model to stock markets: Value-at-Risk and portfolio risk assessment Reviewed

    M. Kozaki, A. -H. Sato

    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS   387 ( 5-6 )   1225 - 1246   2008.2

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    DOI： 10.1016/j.physa.2007.10.023

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  • Interaction of agents in financial markets and informational method to quantify it Reviewed

    Aki-Hiro Sato

    Artificial Life and Robotics   12 ( 1-2 )   176 - 179   2008

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    DOI： 10.1007/s10015-007-0462-8

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  • Detecting singularity of behavioral frequencies in the foreign exchange market : Transmission and synchronization of their singularities Reviewed

    SATO AKI-HIRO

    IPSJ SIG Notes   2008 ( 41 )   31 - 34   2008

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    Singular behavior of market participants in the foreign exchange market - quotation frequencies rapidly increase for a short period - is found. A mathematical method to automatically detect the rapid increases from multi-dimensional time series of quotation frequencies and computational technique to both visualize and quantify transmission and synchronization of them are proposed. By means of the proposal method for 46 kinds of currency pairs consisting of 24 currencies visualization and quantification of singular behavior in the foreign exchange market is conducted. The relationship between synchronization of this singular behavior and similarity structure among quotation frequencies is calculated.

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    Other Link： http://id.nii.ac.jp/1001/00032869/

  • Frequency analysis of tick quotes on the foreign exchange market and agent-based modeling: A spectral distance approach Reviewed

    Aki-Hiro Sato

    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS   382 ( 1 )   258 - 270   2007.8

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    DOI： 10.1016/j.physa.2007.03.043

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  • Modeling Financial Markets Based on the Double-threshold Agent Model Reviewed

    SATO AKI-HIRO

    48 ( 2 )   9 - 16   2007.2

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    We analyze tick quotes of the USD/JPY market from 1998 to 2003. Calculating power spectrum densities we find some peaks for them at a few minutes. In order to explain this phenomenon we develop the double-threshold agent model. The double-threshold agent model is a microscopic model of a financial market which consists of agents who determine to buy, sell, or do nothing. Under the assumption that there is a common exogenous periodic information that does not affect decision-making of the agents we find a peak for power spectrum densities of agents' activity at half the frequency of the exogenous information. Furthermore signal-to-noise ratio calculated from them depends on uncertainty of decision-making of agents and has an extreme at optimal strength of the uncertainty, namely, stochastic resonance happens. We propose a hypothesis that appearance and disappearance of the peaks relates to stochastic resonance.

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    Other Link： http://id.nii.ac.jp/1001/00017130/

  • Dynamical structure of behavioral similarities of the market participants in the foreign exchange market Reviewed

    Aki-Hiro Sato, Kohei Shintani

    ECONOPHYSICS OF MARKETS AND BUSINESS NETWORKS   5   117 - +   2007

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  • 並列二閾値素子系による市場のモデル化とそのべき則性 Reviewed

    小崎元也, 佐藤 彰洋

    情報処理学会論文誌数理モデル化と応用, 48, No. SIG 15, 55-65   2007

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  • ティック頻度情報に基づく外国為替市場構造の定量化 Reviewed

    佐藤 彰洋

    情報処理学会論文誌数理モデル化と応用,48(SIG 19), 33-46   2007

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  • Frequency analysis of tick quotes on foreign currency markets and the double-threshold agent model Reviewed

    Aki-Hiro Sato

    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS   369 ( 2 )   753 - 764   2006.9

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    DOI： 10.1016/j.physa.2006.02.009

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  • Quantifying similarity between markets with application to high frequency financial data Reviewed

    Aki-Hiro Sato, Junpei Oshiro

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   75 ( 8 )   2006.8

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    DOI： 10.1143/JPSJ.75.084005

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  • Characteristic time scales of tick quotes on foreign currency markets: an empirical study and agent-based model Reviewed

    AH Sato

    EUROPEAN PHYSICAL JOURNAL B   50 ( 1-2 )   137 - 140   2006.3

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    DOI： 10.1140/epjb/e2006-00125-x

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  • A characteristic time scale of tick quotes on foreign currency markets Reviewed

    Aki-Hiro SATO

    Practical Fruits of Econophysics, Springer(Tokyo), Ed. by H. Takayasu, 82--86.   2006

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  • Phase transitions on an array of double-threshold noisy devices with a positive feedback Reviewed

    AH Sato, K Takeuchi, T Hada

    PHYSICS LETTERS A   346 ( 1-3 )   27 - 32   2005.10

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    DOI： 10.1016/j.physleta.2005.07.069

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  • Stochastic resonance in a simple threshold system from a static mutual information point of view Reviewed

    T Munakata, AH Sato, T Hada

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   74 ( 7 )   2094 - 2098   2005.7

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    DOI： 10.1143/JPSJ.74.2094

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  • Time interval between successive trading in foreign currency market: from microscopic to macroscopic Reviewed

    AH Sato

    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS   344 ( 1-2 )   211 - 215   2004.12

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    DOI： 10.1016/j.physa.2004.06.119

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  • Signal estimation and threshold optimization using an array of bithreshold elements Reviewed

    AH Sato, M Ueda, T Munakata

    PHYSICAL REVIEW E   70 ( 2 )   021106-1-021106-5   2004.8

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    We consider the problem of optimizing signal transmission through multichannel noisy devices. We investigate an array of bithreshold noisy devices which is connected in parallel and convergent on a summing center. Utilizing the concept of noise-induced linearization we derive an analytical approximation of the normalized power norm and clarify the relation between the optimum threshold and the standard deviation of noises. We show that the optimum threshold value is 0.63 times the standard deviation of the noises. This relation is applicable to both subthreshold and suprathreshold inputs.

    DOI： 10.1103/PhysRevE.70.021106

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  • Explanation of power law behavior of autoregressive conditional duration processes based on the random multiplicative process Reviewed

    AH Sato

    PHYSICAL REVIEW E   69 ( 4 )   047101-1-047101-4   2004.4

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    Autoregressive conditional duration (ACD) processes, which have the potential to be applied to power law distributions of complex systems found in natural science, life science, and social science, are analyzed both numerically and theoretically. An ACD(1) process exhibits the singular second order moment, which suggests that its probability density function (PDF) has a power law tail. It is verified that the PDF of the ACD(1) has a power law tail with an arbitrary exponent depending on a model parameter. On the basis of theory of the random multiplicative process a relation between the model parameter and the power law exponent is theoretically derived. It is confirmed that the relation is valid from numerical simulations. An application of the ACD(1) to intervals between two successive transactions in a foreign currency market is shown.

    DOI： 10.1103/PhysRevE.69.047101

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  • Explanation of power law behavior of autoregressive conditional duration processes based on the random multiplicative process Reviewed

    Aki-Hiro Sato

    Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics   69 ( 4 )   4   2004

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    Autoregressive conditional duration (ACD) processes, which have the potential to be applied to power law distributions of complex systems found in natural science, life science, and social science, are analyzed both numerically and theoretically. An ACD(1) process exhibits the singular second order moment, which suggests that its probability density function (PDF) has a power law tail. It is verified that the PDF of the ACD(1) has a power law tail with an arbitrary exponent depending on a model parameter. On the basis of theory of the random multiplicative process a relation between the model parameter and the power law exponent is theoretically derived. It is confirmed that the relation is valid from numerical simulations. An application of the ACD(1) to intervals between two successive transactions in a foreign currency market is shown. © 2004 The American Physical Society.

    DOI： 10.1103/PhysRevE.69.047101

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  • Signal estimation and threshold optimization using an array of bithreshold elements Reviewed

    Aki-Hiro Sato, Michihito Ueda, Toyonori Munakata

    Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics   70 ( 2 )   5   2004

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    We consider the problem of optimizing signal transmission through multichannel noisy devices. We investigate an array of bithreshold noisy devices which is connected in parallel and convergent on a summing center. Utilizing the concept of noise-induced linearization we derive an analytical approximation of the normalized power norm and clarify the relation between the optimum threshold and the standard deviation of noises. We show that the optimum threshold value is 0.63 times the standard deviation of the noises. This relation is applicable to both subthreshold and suprathreshold inputs. © 2004 The American Physical Society.

    DOI： 10.1103/PhysRevE.70.021106

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  • From dealer model to financial engineering Reviewed

    Aki-Hiro Sato, Hideki Takayasu

    Mathematical Sciences   472 ( 1 )   27 - 32   2002.1

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  • Derivation of ARCH(l) process from market price changes based on deterministic microscopic multi-agent Reviewed

    A Sato, H Takayasu

    EMPIRICAL SCIENCE OF FINANCIAL FLUCTUATIONS   171 - 178   2002

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  • Market price simulator based on analog electrical circuit Reviewed

    AH Sato, H Takayasu

    EMPIRICAL SCIENCE OF FINANCIAL FLUCTUATIONS   214 - 221   2002

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  • Market price fluctuations: contact point between agent based approach and stochastic processes Reviewed

    AH Sato

    ICCIMA 2001: FOURTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND MULTIMEDIA APPLICATIONS, PROCEEDINGS   14 - 18   2001

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  • Power law fluctuation generator based on analog electrical circuit Reviewed

    AH Sato, H Takayasu, Y Sawada

    FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY   8 ( 3 )   219 - 225   2000.9

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    DOI： 10.1142/S0218348X00000251

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  • Invariant power law distribution of Langevin systems with colored multiplicative noise Reviewed

    AH Sato, H Takayasu, Y Sawada

    PHYSICAL REVIEW E   61 ( 2 )   1081 - 1087   2000.2

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    DOI： 10.1103/PhysRevE.61.1081

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  • Dynamic numerical models of stock market price: from microscopic determinism to macroscopic randomness Reviewed

    AH Sato, H Takayasu

    PHYSICA A   250 ( 1-4 )   231 - 252   1998.2

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  • Dynamical models of stock market exchanges : from microscopic determinism to macroscopic randomness Reviewed

    佐藤 彰洋

    Physcia A,250/,231-252   250   231 - 252   1998

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  • Stable infinite variance fluctuations in randomly amplified Langevin systems Reviewed

    H Takayasu, AH Sato, M Takayasu

    PHYSICAL REVIEW LETTERS   79 ( 6 )   966 - 969   1997.8

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    DOI： 10.1103/PhysRevLett.79.966

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Books

  • 日本統計学会公式認定 統計検定データサイエンスエキスパート対応 データサイエンスエキスパート演習

    今泉允聡, 岩崎 学, 梅津高朗, 岡村 寛, 尾﨑順一, 河合玲一郎, 菅 由紀子, 佐藤彰洋, 志田洋平, 高野 渉, 瀧川一学, 竹村彰通, 田中琢真, 林 和則, 原 尚幸, 姫野哲人, 藤田慎也, 丸山祐造, 森純一郎, 山崎眞見（ Role： Joint editor）

    2025.11  （ ISBN:9784489024481 ）

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  • 日本統計学会公式認定 統計検定データサイエンス発展対応 データサイエンス発展演習

    岩崎 学、梅津 高朗、尾﨑 順一、河合 玲一郎(編集委員)、菅 由紀子、久保 奨、佐藤 彰洋(編集委員)、志田 洋平、高部 勲、瀧川 一学、竹村 彰通(編集委員長)、田中 琢真、林 和則、原 尚幸、深谷 良治、藤田 慎也、丸山 祐造（ Role： Joint editor）

    東京図書  2024.9  （ ISBN:4489024290 ）

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    Total pages：368  

    ASIN

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  • Evaluation Platform of Sustainability for Global System: Statistical Approach to Geospatial Information for Big Data Integration

    Aki-Hiro Sato, Hiroe Tsubaki（ Role： Joint author）

    Springer Singapore  2024.5  （ ISBN:9789819722969 ）

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  • Applications of Data-Centric Science to Social Design

    Aki-Hiro SATO（ Role： Edit）

    Nature Springer  2019.7  （ ISBN:9789811071935 ）

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    Language：English   Book type：Scholarly book

    The intention behind this book is to illustrate the deep relation among human behavior, data-centric science, and social design. In fact, these three issues have been independently developing in different fields, although they are, of course, deeply interrelated to one another. Specifically, fundamental understanding of human behavior should be employed for investigating our human society and designing social systems. Insights and both quantitative and qualitative understandings of collective human behavior are quite useful when social systems are designed. Fundamental principles of human behavior, theoretical models of human behavior, and information cascades are addressed as aspects of human behavior. Data-driven investigation of human nature, social behavior, and societal systems are developed as aspects of data-centric science. As design aspects, how to design social systems from heterogeneous memberships is explained. There is also discussion of these three aspects—human behavior, data-centric science, and social design—independently and with regard to the relationships among them.

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  • Grid Square Statistics

    Aki-Hiro SATO（ Role： Sole author）

    Kyoritsu Shuppan  2019.7  （ ISBN:9784320112667 ）

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    Total pages：220   Language：Japanese   Book type：Scholarly book

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  • 横幹〈知の統合〉シリーズ 社会シミュレーション 世界を「見える化」する

    佐藤 彰洋（ Role： Contributorデータ分析の結果を社会シミュレーションに利用する）

    東京電機大学出版会  2017.9  （ ISBN:9784501630706 ）

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    Language：Japanese   Book type：Scholarly book

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  • Economic Foundations for Social Complexity Science: Theory, Sentiments, and Empirical Laws

    Kunika FUKUDA, Aki-Hiro SATO（ Role： ContributorAnalyzing Relationships Among Financial Items of Banks’ Balance Sheets）

    Nature Springer  2017.9  （ ISBN:9789811057052 ）

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    Responsible for pages：257-277   Language：English   Book type：Scholarly book

    The bankruptcy of a big bank can have a chain reaction that causes a huge impact on other sectors, as demonstrated by the Lehman shock. Such an event is called systemic risk, and was the main subject of this study. In this report, the relationships among financial items of banks were analyzed using real data extracted from balance sheets, which were reported by banks listed in the first section of Tokyo Stock Exchange. Following the Cobb-Douglas production function approach, a power-law relationship between equity and debt for each bank become apparent. Furthermore, two variable regression analyses about the power-law relationship were conducted, and it was determined that the parameter estimate can be used as an index measuring macroeconomic condition. No correlation was found between the capital adequacy ratio and the return on equity, which are well-known indicators to characterize bank properties in a quantitative manner. This method makes it easier to understand macroeconomic conditions of banking sector from a comprehensive point of view.

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  • Analysis of high-frequency data in the financial markets

    HAYASHI Takaki, SATO Aki-Hiro（ Role： Joint author）

    Asakura Syoten  2016.7 

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  • Special Issue on The 16th Asia-Pacific Symposium on Intelligent and Evolutionary Systems (IES2012)

    SATO Aki-hiro（ Role： Joint editor）

    New Mathamatics and Natural Computation, Vol. 11, No. 2 (2015) World Scientific  2015.6 

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    Total pages：115   Responsible for pages：215   Language：English   Book type：Report

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  • Applied Data-Centric Social Sciences -- Concepts, Data, Computation, and Theory

    Aki-Hiro Sato（ Role： Sole author）

    Springer  2014.8  （ ISBN:9784431549734 ）

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    Total pages：281   Responsible for pages：1-281   Language：English   Book type：Scholarly book

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  • 17th Asia Pacific Symposium on Intelligent and Evolutionary Systems, IES2013

    Sung-Bae Cho, Aki-Hiro Sato, Kyung-Joong Kim（ Role： Joint editor）

    Procedia Computer Science Volume 24, Pages 1-314 (2013), Elsevier  2013.8 

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  • Econophysics --Physical approach to social and economic phenomena--

    Hideaki Aoyama, Yoshi Fujiwara, Hiroshi Iyetomi, Aki-Hiro Sato

    Progress of Theoretical Physics Supplement, 194  2012.6 

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  • 外国為替市場のメカニズム:為替変動のリスクを測る", ５０のキーワードで読み解く経済学教室, 青木 正直 (監修), 有賀 裕二 (監修), 吉川 洋 (監修), 青山 秀明 (監修)

    佐藤彰洋

    東京図書  2011  （ ISBN:4489021011 ）

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    Total pages：448   Language：Japanese   Book type：Scholarly book

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  • Econophysics --Physical approach to social and economic phenomena--

    Hideaki AOYAMA, Hiroshi IYETOMI, Yoshi FUJIWARA, Aki-Hiro SATO

    Progress of Theoretical Physics Supplement, 179  2009 

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  • 高卒採用のためのビッグデータと空間分析の統合アプローチ

    渡邉潤, 佐藤彰洋

    研究報告数理モデル化と問題解決（MPS）   2024-MPS-151 ( 19 )   1 - 6   2024.12

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  • Methods to produce grid square statistics from log data collected from mobile phones with geographical locations and their applications Invited

    Tsuyoshi Watanabe, Masatoshi Kita, Aki-Hiro Sato

    2023.12

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  • Using Mobile Positioning Data and the Grid Square Statistics for Domestic Tourism in Japan Invited

    Naofumi Sakaguchi, Shinji Matsui, Aki-Hiro Sato

    2023.12

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  • Platform to measure regional characteristics based on grid square statistics for regional problem-solving

    Aki-Hiro Sato, Hiroe Tsubaki

    2023.12

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  • Measurement of city-states by using MESHSTATS Invited

    Aki-Hiro Sato

    2022.12

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    Authorship：Lead author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

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  • SDG11.3.1 (人口増加率と土地利用率の比) の検証 (総務省ビッグデータ等の利活用推進に関する産官学協議のための連携会議)ビッグデータ連携会議レポート03 Invited

    藤村 英範, 濱本 昂, 水野 貴之, 落合 治, 佐藤 彰洋, 竹内 渉

    2022.7

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    Language：Japanese   Publishing type：Internal/External technical report, pre-print, etc.  

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  • Validation report of SDG Indictor 15.4.2 (Mountain Green Cover Index) based on Earth obervation satellite data Invited

    Osamu Ochiai, Aki-Hiro Sato

    Estrela   334   9 - 15   2022.1

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    Authorship：Last author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • Validation of SDG Indictor 15.4.2 (Mountain Green Cover Index) Invited

    FUJIMURA Hidenori, HAMAMOTO Ko, ISHIDA Chu, KAWAKITA Shiro, MIZUNO Takayuki, SATO Aki-Hiro, TAKEUCHI Wataru

    ( 1 )   2021.6

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  • World Grid Square Statistics Reference Architecture and its Potential Applications Invited

    Aki-Hiro Sato

    2020.11

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  • The potential of remote participatory workshops by using digital communication tools Invited

    Yusuke Kenmochi, Norihiro Suganami, Aki-Hiro Sato

    Proceedings of the Conference of Transdisciplinary Federation of Science and Technology   2020   C-4-4   2020.11

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    Authorship：Last author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)   Publisher：Transdisciplinary Federation of Science and Technology  

    This article discusses some potential use scenarios of remote participatory workshops by using digital
    communication tools. This presentation proposes an online design workshop procedure driven by spatial data
    by using the Internet online whiteboard system (eg. MURAL) and remote conference system (eg. ZOOM). We
    show a case study of the design workshop entitled “a discovery of issues in commercial buildings ”, which are
    conducted by multiple teams consisting of 4-5 participants. In this workshop program, participants attempt to
    explain characteristics of places based on spatial data and observations and find insights for problem-solving. We
    report that the use of digital tools in the design workshops enables us to records our behavior in real-time, share
    information visually, and produce digital outcomes and materials easily.

    DOI： 10.11487/oukan.2020.0_c-4-4

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  • Optimization Human Resources Utilization with Grid Square Statistics Data: Usefullness of Grid Square Statistics Data and Social Issues Caused by the Ubiquity and Agglomeration of Human Capital Invited

    Shigehiro Kato, Aki-Hiro Sato

    2020.11

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  • Use cases of grid square statistics and their challenges

    SATO A-H., TSUBAKI H.

    Proceedings of the Conference of Transdisciplinary Federation of Science and Technology   2019 ( 0 )   E - 5-1   2019

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    Language：Japanese   Publisher：Transdisciplinary Federation of Science and Technology  

    Grid square statistics have been developed since the 1960s in Japan and are widely used for dissem-ination of official statistics. In this talk, we introduce grid square statistics and their compatible extension, which are named as world grid square statistics. We show some case studies on grid square statistics and explain a design workshop program for developing its use case and application software. Finally, we address challenges for con-vergent research that we face when we use, produce, integrate, and synthesize grid square statistics.

    DOI： 10.11487/oukan.2019.0_E-5-1

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  • Data as a Service and its application to the global tourism design

    Sato Aki-Hiro, Tsubaki Hiroe

    Proceedings of the Conference of Transdisciplinary Federation of Science and Technology   2018 ( 0 )   A - 2-5   2018

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    Language：Japanese   Publisher：Transdisciplinary Federation of Science and Technology  

    Natural extension of Japanese grid square coding system (JIS X0410) standardized in the Japan Industrial Standard (JIS) to the worldwide usage has been proposed. It is called world grid square coding system and enables us to produce grid square statistics across the globe. The data utilization platform based on the world grid square statistics has been developed as a Data as a Service (DaaS). Its application to the global tourism design and how to use it for a core technology of data-driven tourism services will be discussed.

    DOI： 10.11487/oukan.2018.0_A-2-5

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  • 世界メッシュ統計とその利活用

    佐藤彰洋, 椿広計

    情報処理学会全国大会講演論文集   79th ( 1 )   2017

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  • 世界メッシュコードに基づく各種データの可視化定量化基盤

    佐藤彰洋, 西村正貴, 椿広計

    統計関連学会連合大会講演報告集   2017   2017

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  • 世界メッシュコードと世界メッシュ統計作成の試み

    佐藤彰洋, 椿広計

    統計関連学会連合大会講演報告集   2016   2016

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  • 政府統計を用いた国内観光状況の網羅的分析

    佐藤 彰洋

    2015年度統計関連学会連合大会   2015.9

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  • 日本国内観光の状態計量

    佐藤 彰洋

    平成27年度第1回統計数理研究所共同利用研究集会「人流物流ネットワークとその周辺」研究会   2015.8

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  • 国土交通省航空輸送統計と総務省国勢調査・経済センサス調査メッシュ統計を用いた重力モデルによるフィッティング

    佐藤 彰洋

    平成27年度第1回統計数理研究所共同利用研究集会「人流物流ネットワークとその周辺」研究会   2015.8

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  • 社会経済システムに対するデータ中心科学：空間リスク、経済、エネルギーをめぐって

    佐藤 彰洋

    情報処理学会ネットワーク生態学研究グループ, 第12回ネットワーク生態学シンポジウム   2015.8

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  • ウイルス伝搬の数理モデル化とデータ駆動型シミュレーション

    佐藤 彰洋

    第58回人工知能学会 分子生物情報研究会（SIG-MBI）   2015.7

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  • Probable contribution of Data-driven investigation to solve problems in aging society

    Aki-Hiro Sato

    Asia-Pacific Econophysics Conference 2015   2015.7

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  • Dynamic Interaction Between Asset Prices and Bank Behavior: A Systemic Risk Perspective

    Aki-Hiro Sato, Paolo Tasca

    CEF2015 -- 21st Computing in Economics and Finance   2015.6

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  • 国内旅行需要の地域性

    福田久仁佳, 佐藤彰洋

    情報処理学会第77回年次大会, 京都大学, 京都   2015.3

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  • 経済社会データおよび環境データを用いた航空輸送ネットワークの最適化

    佐藤彰洋, 澤井秀文

    統計数理研究所共同研究集会「経済物理学とその周辺」, 統計数理研究所, 東京   2015.3

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  • 国際航空ネットワーク上での遅れ確率SIRモデルによる感染症伝播シミュレーショ

    佐藤彰洋, 澤井秀文, 伊藤功朗, 岩田健太郎

    情報処理学会第77回年次大会, 京都大学, 京都   2015.3

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  • Detecting Demand-Supply Situations of Hotel Opportunities: An Empirical Analysis of Japanese Room Opportunities Data

    佐藤 彰洋

    JAFEE2014冬季大会, 筑波大学東京キャンパス, 東京   2015.1

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  • 高解像度外国為替市場データを用いた市場状態推定とリスク計量

    佐藤 彰洋

    第3回金融ネットワーク研究会, 観音崎京急ホテル, 横須賀   2015.1

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  • メッシュ統計の利活用と世界メッシュヘの拡張

    佐藤彰洋, 佐藤彰洋, 椿広計

    横幹連合コンファレンス(CD-ROM)   6th   2015

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  • Relationship between job opportunities and economic environments measured from data in internet job searching sites

    Aki-Hiro Sato, Chihiro Shimizu, Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe

    KNOWLEDGE-BASED AND INTELLIGENT INFORMATION & ENGINEERING SYSTEMS 19TH ANNUAL CONFERENCE, KES-2015   60   1255 - 1262   2015

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  • Simulation Analysis of Passenger Flows on an Aviation Network and Their Risk Assessment(<Special Features>Big-Data and Simulations of Social and Economic Systems-Prospect of Econophysics Study)

    Sato Aki-Hiro, Sawai Hidefumi

    Journal of the Japan Society for Simulation Technology   33 ( 4 )   269 - 276   2014.12

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    Language：Japanese   Publisher：Japan Society for Simmulation Technology  

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  • 経済社会環境データを用いた リスク計量と最適化:航空機ネットワークの経路問題への応用

    佐藤彰洋, 澤井秀文

    第5回横幹連合総合シンポジウム, 東京大学, 東京   2014.11

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  • 日本国内航空輸送ネットワーク上の流量と社会ストックとの関係

    佐藤彰洋, 澤井秀文

    統計数理研究所共同研究集会「経済物理学とその周辺」研究会, キヤノングローバル戦略研究所, 東京   2014.9

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  • 尤度比検定に基づく時系列分割法を用いた国内株式価格の網羅的分析

    佐藤 彰洋

    日本金融・証券計量・工学学会高頻度データ・ビッグデータ活用法研究部会, 慶應義塾大学   2014.9

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  • 経済社会データおよび環境データを用いた航空機ネットワークの多目的最適化 – 地理的リスクと経済性の指標に基づく日本国内航空機ネットワークの評価

    澤井秀文, 佐藤彰洋

    ソフトウエア科学会ネットワークが創発する知能研究会, 電気通信大学, 東京   2014.8

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  • An effect of natural disasters to socio-economic systems and a procedure to estimate physical exposures

    Aki-Hiro Sato

    SigmaPhi2014, Rhodes, Greece   2014.7

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  • データ中心社会科学の最近の研究動向と事例 ホテル予約サイトデータと国際線旅客航空機データの分析を通じて

    佐藤 彰洋

    日本経営工学会中国四国支部, 広島工業大学広島校舎, 広島   2014.6

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  • Quantifying risks and economic values of a Japanese domestic air transportation network

    58   6p   2014.5

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  • Applied data-centric social sciences: Concepts, data, computation, and theory

    Aki-Hiro Sato

    Applied Data-Centric Social Sciences: Concepts, Data, Computation, and Theory   1 - 281   2014.5

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    Language：English   Publisher：Springer Japan  

    DOI： 10.1007/978-4-431-54974-1_1

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  • 日本国内線航空機ネットワークのリスクと経済性

    佐藤彰洋, 澤井秀文

    第58回システム制御情報学会研究発表講演会 (SCI’14), 京都テルサ, 京都   2014.5

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  • Geographical risk assessment from tsunami run-up events based on socioeconomic-environmental data and its application to Japanese air transportation Reviewed

    Aki-Hiro Sato, Hidefumi Sawai

    2ND CIRP ROBUST MANUFACTURING CONFERENCE (ROMAC 2014)   19   27 - 32   2014

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  • 経済社会データおよび環境データを用いた空間リスク計量

    佐藤彰洋, 澤井秀文

    第5回横幹連合コンファレンス, 香川大学, 高松   2013.12

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  • 国際旅客航空機における距離と価格との関係に関する実証分析

    佐藤 彰洋

    日本物理学会2013年秋季大会, 徳島大学, 徳島   2013.9

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  • 経済社会データおよび環境データを用いた定量的リスク評価の試み

    佐藤 彰洋

    統計数理研究所共同研究集会「経済物理学とその周辺」研究会, キヤノングローバル戦略研究所, 東京   2013.9

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  • Report on 2012 IEEE Woild Congress on Computational Intelligence (IEEE WCCI 2012)

    SATO Aki-Hiro

    Systems, control and information   57 ( 3 )   131 - 131   2013.3

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    Language：Japanese   Publisher：Institute of Systems, Control and Information Engineers  

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  • Chaotic Method for Generating q-Gaussian Random Variables

    UMENO Ken, SATO Aki-Hiro

    IEICE technical report. Nonlinear problems   112 ( 487 )   171 - 176   2013.3

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    Language：Japanese   Publisher：The Institute of Electronics, Information and Communication Engineers  

    This study proposes a pseudo random number generator of q-Gaussian random variables for a range of g values, -∞<q<3, based on deterministic chaotic map dynamics. Our method consists of chaotic maps on the unit circle and map dynamics based on the piecewise linear map. We perform the q-Gaussian random number generator for several values of q and conduct both Kolmogorov-Smirnov (KS)and Anderson-Darling (AD)tests. The q-Gaussian samples generated by our proposed method pass the KS test at more than 5% significance level for values of 9 ranging from -1.0 to 2.7, while they pass the AD test at more than 5% significance level for g ranging from -1.0 to 2.4.

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  • 東日本大震災の東北太平洋沿岸地域ホテル産業への影響：ホテル利用可能性の時空間依存性

    佐藤 彰洋

    統計数理研究所共同研究集会「社会物理学の展望」, 東京電機大学, 千住キャンパス, 東京   2013.3

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  • 外国為替市場のゆらぎのスケーリング則と相関分析

    佐藤 彰洋

    統計数理研究所共同研究集会「経済物理学とその周辺」, 統計数理研究所, 東京   2013.3

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  • 高解像度外国為替市場データを用いた市場状態推定とリスク計量

    佐藤 彰洋

    数学・数理科学と諸科学・産業との協働によるイノベーション創出のための研究促進プログラム「金融リスクの計測・管理・制御に纏わる数理」, 大阪大学, 大阪   2013.3

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  • 外国為替市場における大規模同期現象の観測と発生確率の外挿

    佐藤彰洋

    日本物理学会2012年秋季大会, 横浜国立大学   2012.9

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  • 外国為替市場における参加者行動の網羅的計量

    佐藤彰洋

    行動計量学会第40会大会, 新潟県立大学   2012.9

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  • A Comprehensive Analysis of Time Series Segmentation on the Japanese Stock Prices Reviewed

    Aki-Hiro Sato

    4th World Congress on Social Simulation (WCSS2012), Taipei, TAIWAN   2012.9

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  • 可解な単位円周上二次元カオスの統計的性質

    佐藤彰洋, 梅野健

    応用数理学会2012年度年会, 稚内   2012   2012.8

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  • 稀頻度事象の統計的性質：テールリスクとべき乗則の計量

    佐藤彰洋

    電子情報通信学会第3回複雑コミュニケーションサイエンス研究会, 東京理科大学   2012.3

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  • 国内宿泊施設の各地域における規模分布に関する統計分析

    野田実, 佐藤彰洋

    情報処理学会全国大会講演論文集   74th ( 4 )   4.699-4.700   2012.3

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  • 国内宿泊施設の各地域における規模分布に関する統計分析

    野田実, 佐藤彰洋

    第74回全国大会講演論文集   2012 ( 1 )   699 - 700   2012.3

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    最近インターネットを用いて宿泊施設を予約することが一般的になってきている。本研究では、日本国内、約16000の宿泊施設の位置と規模（部屋数）に関するデータを宿泊施設予約サイトから収集し、このデータを用いて地域ごとの宿泊施設の分布を調べた。

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  • ECONOPHYSICS 2011 - THE HITCHHIKER'S GUIDE TO THE ECONOMY Preface

    Hideaki Aoyama, Yoshi Fujiwara, Hiroshi Iyetomi, Aki-Hiro Sato

    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT   ( 194 )   I - II   2012

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  • A method to quantify risks of financial assets: An empirical analysis of Japanese security prices Reviewed

    Aki-Hiro Sato

    International Conference on Management, Manufacturing and Materials Engineering (ICMMM2011), Zhengzhou, CHINA   2011.12

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  • 外国為替市場における市場参加者の大規模同期現象のモデルと計量

    佐藤彰洋

    日本物理学会2011年秋季大会   2011.9

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  • Quantification of Bipartite Network Structure with Entropy Reviewed

    Aki-Hiro Sato

    International Workshop on Coping with Crises in Complex Socio-Economic Systems - 2011, ETH Zurich, Zurich, SWITZERLAND   2011.3

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  • ランダム乗算過程のパラメータ推定：q-ガウス分布によるテールリスク外挿問題への応用

    佐藤彰洋

    日本物理学会第66回年次大会, 新潟大学   2011.3

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  • Patterns of Regional Travel Behavior: An Analysis of Japanese Hotel Reservation Data Reviewed

    Aki-Hiro SATO, Thomas LUX

    Econophysics Colloquium 2010, Academia of Sinica, Taipei, TAIWAN   2010.11

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  • 21aEL-9 Comprehensive Analysis of Information Transmission among Agents (II) : Synchrony and Transmission of Collective Behavior

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   299 - 299   2010.3

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  • エージェント集団行動の網羅的観点からの特徴づけ:類似性と異質性の観点から

    佐藤彰洋

    計測自動制御学会第22回自律分散シンポジウム, 名古屋大学   2010.1

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  • Q-Gaussian distributions and multiplicative stochastic processes for analysis of multiple financial time series Reviewed

    Aki-Hiro Sato

    Journal of Physics: Conference Series   201   2010

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    DOI： 10.1088/1742-6596/201/1/012008

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  • Parameter estimation methods of a multiplicative stochastic process for the analysis of financial time series: Application to inference of tail-risks Reviewed

    Aki-Hiro SATO, Jaba GHONGHADZE, Tae-Seok JANG, Friedrich WAGNER, Thomas LUX

    The 14th Asia Pacific Symposium on Intelligent and Evolutionary Systems, 2010   2010

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  • 27aQK-11 Comprehensive Analysis of Information Transmission among Agents (I) : Similarity and Heterogeneity of Collective Behavior

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   64 ( 2 )   207 - 207   2009.8

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  • Comprehensive measurement of agent behavior in financial markets Reviewed

    Aki-Hiro SATO, Takaki HAYASHI

    The 9th Asia-Pacific Complex Systems Conference, 2009   2009

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  • 23aVA-11 High-resolution analysis on behavior of market participants in the FX market

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   256 - 256   2008.8

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  • Exhousive analysis of the foreign exchange market with high-frequency financial data

    SATO Aki-Hiro

    IPSJ SIG Notes   2008 ( 17 )   165 - 168   2008.3

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    In order to quantify and visualize states of market participants with high resolution empirical analysis by using spectral distances is conducted. Empirically it is confirmed that total spectral distance of quotation frequencies is related to that of best ask rates. Furthermore it is found that similarity structures of exchange rates vary drastically in time.

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    Other Link： http://id.nii.ac.jp/1001/00032914/

  • 26aWG-2 Numerical simulation of a financial market with many kinds of financial commodities

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   339 - 339   2008.2

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  • 22pTL-4 Spectral methods to quantify states of the foreign exchange market

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   289 - 289   2007.8

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  • 23aXE-2 Correlation structure of foreign exchange markets based on the tick frequency

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   171 - 171   2006.8

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  • 30aUA-1 Frequency analysis of tick quotes on foreign exchange markets : time-frequency structure

    Sato Aki-Hiro, Oshiro Junpei

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   326 - 326   2006.3

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  • Modeling Market Price Fluctuations from the Microscopic Point of View

    SATO AKI-HIRO

    46 ( 17 )   1 - 9   2005.12

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    The economically motivated problems have attracted the attention of many researchers in various fields : economics, informatics, and physics. This article shows stochastic processes developed in financial engineering and econometrics, and presents a possibility to bridge microscopic agent-based simulations to the stochastic processes. The extension of the deterministic dealer model proposed by Takayasu, et al. (1992) is considered. Moreover under the assumption that deterministic variables of the model are regarded as stochastic variables it is shown that the quasi-GARCH (1, 1) process proposed by Bollerslev (1986) is derived for the market price changes.

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    Other Link： http://id.nii.ac.jp/1001/00017182/

  • Stochastic processes generating power law fluctuations and information theory

    SATO AKI-HIRO

    IEICE technical report   105 ( 418 )   19 - 23   2005.11

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    The Langevin equations with both multiplicative and additive noises, of which steady-state probability density functions have power law tails are theoretically investigated. Information theory is applied to their steady-state probability density functions and their Fisher information is derived in the case of a static input signal. Moreover it is shown that the static input signal can be estimated from a difference between function forms of the observed probability density functions.

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  • 19pYO-11 Phase transitions enhance stochastic resonance in a threshold system

    Takeuchi Keigo, Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   158 - 158   2005.8

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  • Modeling market price fluctuations based on the deterministic dealer model

    SATO AKI-HIRO

    IPSJ SIG Notes   2005 ( 20 )   13 - 16   2005.3

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    The deterministic dealer model proposed by Takayasu et. al. (1992) is one of agent-based models. Cumulative distribution functions of its price fluctuations follows power law but their volatility clustering is not satisfied. In this paper a modified dealer model is proposed and it is clarified that it is satisfied by both the power law and the volatility clustering. Moreover by an approximation that deterministic variables of the model is assumed as stochastic variables it is shown that we have a quasi-GARCH (1, 1) stochastic process proposed by Engle and Bollerslev(1986).

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    Other Link： http://id.nii.ac.jp/1001/00033243/

  • Modeling financial markets based on the arrayed bithreshold noisy devices and their power-law scaling

    KOZAKI MOTOYA, SATO AKIHIRO

    IPSJ SIG Notes   2005 ( 20 )   17 - 20   2005.3

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    In this paper, we propose a mathematical agent-based model of financial markets, an arrayed bithreshold noisy devices model, which has two important statistical properties of markets : intermittency of price changes and power-law scaling in distributions of price changes. First, we performed numerical simulations of the agent model and confirmed that the statistical features of the model are similar to empirical ones. Second, by meanfield approximation, we derived an equation of the price changes and found that the equation can explain both the intermittent behaviour and the power-law scaling of the distributions. Finally, by linear approximation of the equation, we clarified a relation between power-law exponents and model parameters.

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    Other Link： http://id.nii.ac.jp/1001/00033244/

  • 24pYF-2 Artificial market model based on double-threshold noisy elements

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   275 - 275   2005.3

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  • 14pTD-10 The study of stochastic resonance in a summing network of threshold devices

    Takeuchi Keigo, Sato AkiHiro, Munakata Toyonori

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   271 - 271   2004.8

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  • 27aWM-5 Digital stochastic resonance measured by the bit error ratio

    Takeuchi Keigo, Munakata Toyonori, Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   265 - 265   2004.3

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  • 27aWD-13 Explanation of power law fluctuations of autoregressive conditional duration processes

    Sato Aki-Hiro

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   263 - 263   2004.3

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  • Derivation of stochastic processes from agent based market model

    Sato AkiHiro

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   193 - 193   2003.8

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  • Dynamical numerical model of stock market price : from microscopic determinism to macroscopic randomness

    SATO Aki-Hiro, TAKAYASU Hideki

    IEICE technical report. Artificial intelligence and knowledge-based processing   99 ( 533 )   43 - 50   2000.1

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    It has pointed that a probability density function for price changes of exchanges or stocks follows a function with long tails such as Levy distribution. However the reason why there are rapid fluctuations of price changes in the market have not been clarified yet. In this article we introduce a simple multi-agent model based on threshold dynamics. We show that fluctuations of the multi-agent model can be approximated by a stochastic process with both multiplicative and additive noise and numerically demonstrate the fluctuations of price changes in the multi-agent model by using the stochastic process. We propose an electric circuit which can generate fluctuations statistically equivalent to the price changes.

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  • Statistical Physics Approach to Market Price Change (Special Features on Economic Forecasting and Simulation)

    SATO Aki-Hiro, TAKAYASU Hideki

    Journal of the Japan Society for Simulation Technology   17 ( 4 )   278 - 284   1998.12

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    A deterministic model of a market consisted of many dealers is introduced and complicated chaotic market price fluctuations are produced. The fluctuations are shown to be well approximated by an autoregressive stochastic equation with random coefficients, which gives consistent results with real data.

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  • 8a-YD-8 Dynamic numerical model of stock market price : from microscopic determinism to macroscopic randomness

    Sato A-H., Takayasu H., Takayasu M.

    Meeting abstracts of the Physical Society of Japan   52 ( 2 )   801 - 801   1997.9

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Presentations

  • Spatial Big Data Infrastructure for the Japanese Hyper-spectral Imager SUIte (HISUI) based on World Grid Square Statistics

    Aki-Hiro Sato

    IEEE International Conference on Big Data 2024 (IEEE Big Data 2024)  2024.12 

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    Language：English   Presentation type：Poster presentation  

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  • Enhancing Big Data Analysis: A Recursive Window Segmentation Strategy for Multivariate Longitudinal Data

    Desmond Fomo, Aki-Hiro Sato

    IEEE International Conference on Big Data 2024 (IEEE Big Data 2024)  2024.12 

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    Language：English   Presentation type：Oral presentation (general)  

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  • SDGsに資する社会設計支援のためのメッシュ統計分析手法 Invited

    佐藤彰洋

    第15回横幹連合コンファレンス  2024.12 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • 高卒採用のためのビッグデータと空間分析の統合アプローチ

    渡邉潤, 佐藤彰洋

    情報処理学会第151回数理モデル化と問題解決(MPS)研究会  2024.12 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • Procedure to produce high-dimensional Grid Square statistics for observation data of Hyperspectral meter HISUI and their analysis

    Aki-Hiro Sato

    2024.9 

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  • The evaluation method for bus transports by using Grid Square statistics for mobile sensing data

    Hiroto Odajima, Aki-Hiro Sato, Shinji Matsui

    2024.9 

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  • An Integrated Approach to Big Data and Spatial Analysis for High School Graduate Recruitment

    Jun Watanabe, Aki-Hiro Sato

    2024.9 

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  • Develpment and evaluation of the public transportation accessibility Indicator (SDG11.2.1)

    Daisuke Mitsumori, Aki-Hiro Sato

    2024.9 

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  • Analyzing the part-time job market in terms of grid squares using job advertisement microdata

    Akihiro Ogasarawa, Aki-Hiro Sato

    2024.9 

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  • High Fluctuation Based Recursive Segmentation for Big Data

    Desmond Fomo, Aki-Hiro Sato

    2024 IEEE International Conference on Big Data Analysis (ICBDA)  2024.3 

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    Event date： 2024.3

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  • Algorithm and implementation of a datadriven job search support system

    Jun Watanabe, Aki-Hiro Sato

    The 86th National Convention of IPSJ  2024.3 

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  • Converting XYZ-Tiles into World Grid Square-Tiles for producing Grid statistics

    Kosuke Nakata, Aki-Hiro Sato

    The 86th National Convention of IPSJ  2024.3 

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  • 自律分散的世界メッシュ統計基盤のアーキテクチャ設計と実証

    佐藤彰洋

    情報処理学会第86回全国大会  2024.3 

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  • 再生可能エネルギー発電実績データのデータインフラストラクチャー構築と発電量予測

    小川滉介, 佐藤彰洋

    情報処理学会第86回全国大会  2024.3 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • The evaluation method for bus transports by using Grid Squares statistics for mobile sensing data

    Hiroto Odajima, Aki-Hiro Sato, Shinji Matsui

    The 86th National Convention of IPSJ  2024.3 

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  • 時系列分断アルゴリズムによる業種毎の株式価格変動の比較分析

    小笠原章弘, 佐藤彰洋

    情報処理学会第86回全国大会  2024.3 

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  • Feature analysis about station demand of Hello Cycling

    Xuanrong Su, Yuya Sato, Aki-Hiro Sato

    The 86th National Convention of IPSJ  2024.3 

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  • Using Mobile Positioning Data and the Grid square Statistics for Domestic Tourism in Japan Invited

    Naofumi Sakaguchi, Shinji Matsui, Aki-Hiro Sato

    2023.12 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Methods to produce grid square statistics from log data collected from mobile phones with geographical locations and their applications Invited

    Tsuyoshi Watanabe, Masahiro Kita, Aki-Hiro Sato

    2023.12 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Platform to measure regional characteristics based on grid square statistics fro regional problem-solving Invited

    Aki-Hiro Sato, Hiroe Tsubaki

    2023.12 

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  • 統計検定DSエキスパートの考え方と取組み Invited

    佐藤 彰洋, 河合 玲一郎, 竹村 彰通

    2022年度の日本統計学会春季大会(第17回)  2023.3 

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  • 洪水ハザードマップのメッシュ化プロダクトについて

    佐藤 駿, 中井咲希, 佐藤彰洋

    情報処理学会第85回全国大会  2023.3 

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  • 人口と商業メッシュ統計データを用いた小売店舗の立地分類

    JUNI YOON, 佐藤彰洋

    情報処理学会第85回全国大会  2023.3 

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  • プログラマブルAPIを用いた宿泊者数予測分析

    諸田健太朗, 小川滉介, 松井伸司, 佐藤彰洋

    情報処理学会第85回全国大会  2023.3 

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  • 世界メッシュ統計の統合分析アルゴリズムの開発 Invited

    佐藤彰洋

    2022年度統計数理研究所重点型研究テーマ３「地図・メッシュ・位置情報データのデータベース作成・統合と高度利用」公開研究集会  2023.2 

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  • Mesurement of city-states by using MESHSTATS Invited

    Aki-Hiro Sato

    2022.12 

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  • Estimating the monthly number of travelers (accommodation travel statistics survey) using people flow grid square statistics data

    Shinji Matsui, Aki-Hiro Sato

    2022.9 

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  • Design and practice of design workshop program

    Aki-Hiro Sato, Yumi Mizumura

    2022.9 

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  • 自律分散的世界メッシュ統計基盤アーキテクチャの実証 Invited

    佐藤彰洋

    2021年度第2回統計数理研究所共同研究集会「世界メッシュコード研究会」  2022.3 

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  • Methods to produce grid square statistics from geographical information collected from mobile phones and their applications

    Aki-Hiro Sato, Takuya Tsutsumi, Shigehiro Kato, Takashi Yoshikado, Masahiro Kita, Yuri Nukariya, Yasusi Fujiwara, Tsuyoshi Watanabe

    2021.9 

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  • Grid square statistics and twitter data with geographical locations

    Takuya Tsutsumi, Aki-Hiro Sato

    2021.9 

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  • Case study on metods of data-driven workshops

    Takashi Yoshikado, Aki-Hiro Sato

    2021.9 

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  • Methods for developing digital design workshop and their practical evalulation

    Takashi Yoshikado, Aki-Hiro Sato

    2021.8 

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  • Grid square statistics and twitter data with geographical locations

    Takuya Tsutsumi, Aki-Hiro Sato

    2021.8 

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  • Archtecture design for self-distributed World Grid Square Statistics Platform Invited

    Aki-Hiro Sato

    2021.8 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Numerical simulation of COVID-19 epidemic spread Invited

    Aki-Hiro Sato

    2021.7 

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    Event date： 2021.7

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Expectation toward data-driven marketing research Invited

    Aki-Hiro Sato

    2021.5 

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  • Data-driven numerical simulation for preventing COVID-19 epidemic spread

    Aki-Hiro Sato

    2021.4 

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    Language：Japanese   Presentation type：Oral presentation (keynote)  

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  • Archtecture design and actual proof for self-distributed World Grid Square Statistics Platform

    Aki-Hiro Sato

    2021.3 

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    Event date： 2021.3

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  • Concept of fundamental design of CBT DS advanced and its activity Invited

    Aki-Hiro Sato

    2021.3 

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  • The potential of remote participatory workshopsby using digital communication tools Invited

    Yusuke Kenmochi, Norihiro Suganami, Aki-Hiro Sato

    2020.10 

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    Event date： 2020.10

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • World Grid Square Statistics Reference Architecture and its Potential Applications Invited

    Aki-Hiro Sato

    2020.10 

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    Event date： 2020.10

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Optimizing Human Resources Utilization with Grid Square Statistics Data Invited

    Shigehiro Kato, Aki-Hiro Sato

    2020.10 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • Methods for utilization of dynamic population statistics

    Aki-Hiro Sato

    2020.8 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • Use cases of grid square statistics and their challenges Invited

    Aki-Hiro Sato, Hiroe Tsubaki

    2019.12 

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    Event date： 2019.11 - 2019.12

    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • インターネット求人広告を用いた求人の空間分析

    佐藤彰洋, 水野貴之, 大西立顕, 渡辺努

    H28年度第2回統計数理研究所共同利用研究集会経済物理学とその周辺研究会  2018.3 

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  • 航空会社の価格戦略の分析

    飯田智基, 佐藤彰洋

    情報処理学会第80回年次大会  2018.3 

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  • Data as a Service and its application to the global tourism design Invited

    Aki-Hiro SATO, Hiroe Tsubaki

    2018.10 

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    File： genko_AHSatov3.pdf

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  • Measuring Activities and Values of Industrial Clusters based on Job Opportunity Data Collected from an Internet Japanese Job Matching Site International conference

    Aki-Hiro Sato, Tsutomu Watanabe

    2nd International Workshop on Big Data for Sustainable Development in IEEE Big Data 2016  2016.12 

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  • 社会経済的価値データとリスク事象データの空間的統合 Invited

    佐藤 彰洋

    第２回防災学術連携シンポジウム, 激甚化する台風・豪雨災害とその対策  2016.12  防災学術連携体

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    Venue：東京  

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  • メッシュ統計の利活用と世界メッシュへの拡張

    佐藤彰洋, 椿広計

    第6回横幹連合コンファレンス  2016.12 

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  • 経済社会データおよび環境データを用いた空間評価指標の大規模計算:地域メッシュ統計の利活用

    佐藤彰洋, 澤井秀文, 榎峠弘樹, Jang Tae-Seok

    第6回横幹連合コンファレンス  2016.12 

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  • 運輸セクターの財務分析：JR事例研究

    佐藤 彰洋, 内山 仁

    JAFEE 2016年度冬季大会  2017.2 

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  • 津波ハザード推定モデルと３次メッシュハザードデータを用いた分析

    佐藤 彰洋

    科研費シンポジウム「空間データと災害の統計モデル」  2017.1 

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  • 社会経済システムに対するデータ中心科学：空間リスク、経済、エネルギーをめぐって Invited

    佐藤 彰洋

    情報処理学会ネットワーク生態学研究グループ, 第12回ネットワーク生態学シンポジウム  2015.8 

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  • ウイルス伝搬の数理モデル化とデータ駆動型シミュレーション

    佐藤 彰洋

    第58回人工知能学会 分子生物情報研究会（SIG-MBI）  2015.7 

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  • 日本国内観光の状態計量

    佐藤 彰洋

    平成27年度第1回統計数理研究所共同利用研究集会「人流物流ネットワークとその周辺」研究会,  2015.8 

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  • 国土交通省航空輸送統計と総務省国勢調査・経済センサス調査メッシュ統計を用いた重力モデルによるフィッティング

    佐藤 彰洋

    平成27年度第1回統計数理研究所共同利用研究集会「人流物流ネットワークとその周辺」研究会  2015.8 

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  • Relationship between job opportunities and economic environments measured from data in internet job searching sites International conference

    Aki-Hiro Sato, Chihiro Shimizu, Takayuki Mizuno, Takaaki Ohnishi, Tsutomu Watanabe

    19th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES2015)  2015.9 

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  • 政府統計を用いた国内観光状況の網羅的分析

    佐藤 彰洋

    2015年度統計関連学会連合大会  2015.9 

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  • 経済社会データおよび経済データを用いた空間評価指標の大規模計算"(hp140076) Invited

    佐藤 彰洋

    第2回「京」を中核とするHPCIシステム利用研究課題 成果報告会  2015.10 

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  • Large-scale computation of geographical evaluation indicators with socio-economic-environmental databases Invited International conference

    Aki-Hiro SATO

    ISM HPCCON 2015  2015.10 

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  • Microdata Analysis of the Accommodation Survey in Japanese Tourism Statistics International conference

    Aki-Hiro SATO

    1st International Workshop on Big Data for Sustainable Development  2015.11 

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  • An Epidemic Simulation with a Delayed Stochastic SIR Model Based on International Socioeconomic-Technological Databases International conference

    Aki-Hiro Sato, Hidefumi Sawai, Isao Ito, Kentaro Iwata

    1st International Workshop on Big Data for Sustainable Development  2015.11 

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  • 政府統計を用いた国内観光状況の網羅的分析

    佐藤 彰洋

    統計数理研究所二次的利用研究会  2015.11 

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  • ウイルス伝搬の数理モデル化とデータ駆動型シミュレーション

    佐藤 彰洋

    第５回金融ネットワーク研究会  2015.12 

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  • 経済社会データおよび環境データを用いた空間評価指標の大規模計算

    佐藤 彰洋

    第５回金融ネットワーク研究会  2015.12 

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  • メッシュ統計の利活用と世界メッシュへの拡張",

    佐藤彰洋, 椿広計

    第6回横幹連合コンファレンス  2015.12 

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  • 経済社会データおよび環境データを用いた空間評価指標の大規模計算

    佐藤 彰洋

    経済物理学2015  2015.12 

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  • メッシュ統計の世界拡張と利活用の可能性

    佐藤彰洋, 椿広計

    H27年度第２回統計数理研究所共同利用研究集会「人流物流ネットワークとその周辺研究会」  2016.1 

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  • 経済社会データおよび環境データを用いた空間評価指標の大規模計算:地域メッシュ統計の利活用

    佐藤彰洋, 澤井秀文, 榎峠弘樹, Jang Tae-Seok

    第6回横幹連合コンファレンス  2015.12 

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  • Webクローリングにより収集されたデータと公的統計との関係：宿泊旅行統計メッシュデータの可能性 Invited

    佐藤 彰洋

    第10回日本統計学会春季集会  2016.3 

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  • "ウイルス伝搬の数理モデル化とデータ駆動型シミュレーション

    佐藤 彰洋, 澤井 秀文, 伊藤 功朗, 岩田 健太郎

    H27年度第２回統計数理研究所共同利用研究集会「人流物流ネットワークとその周辺研究会」  2016.1 

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  • 経済社会データおよび環境データを用いた空間評価指標の大規模計算

    佐藤彰洋, 榎峠弘樹, Jang Tae-Seok, 澤井秀文

    情報処理学会第78回全国大会  2016.3 

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  • IoTセンター取得データのメッシュ統計利活用可能性

    菅波紀宏, 佐藤彰洋

    日本計算機統計学会第36回大会  2022.5 

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  • Probable contribution of Data-driven investigation to solve problems in aging society Invited International conference

    Aki-Hiro SATO

    Asia-Pacific Econophysics Conference 2015,  2015.7 

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  • 世界メッシュ統計とその利活用

    佐藤彰洋, 椿広計

    H28年度第2回統計数理研究所人流物流ネットワークとその周辺研究会  2017.2 

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  • 統計情報可視化システムMESHSTATSの紹介と鉄道、航空輸送への応用

    佐藤 彰洋

    H29年度第2回統計数理研究所共同利用研究集会「人流物流金流ネットワークとその周辺」  2018.2 

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  • 自然界からヒントを得た国際航空輸送ネットワークの性能指標の改良

    澤井秀文, 佐藤彰洋

    H28年度第2回統計数理研究所人流物流ネットワークとその周辺研究会  2017.2 

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  • Measuring tourism tendency combining government statistics and data collected from internet

    Aki-Hiro SATO

    EU-Japan Workshop on Big Data for Sustainability and Tourism  2017.3 

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    Venue：Hamburg, Germany  

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  • "世界メッシュコードの提案と世界メッシュ統計の作成及び利活用

    佐藤彰洋, 椿広計

    第一回計算社会科学ワークショップ  2017.2 

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  • Evaluation Platform for Sustainability of Global Systems Invited International conference

    Aki-Hiro SATO

    Marketing & Sustainability Forum, Hostel International  2017.3 

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  • 国際標準化機構(ISO)で検討されているビッグデータ標準化の現状と今後について Invited

    佐藤 彰洋

    第4回ビジネスコート勉強会（宇宙×AI・IoT×α）  2017.4 

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  • 国内観光施設の自然災害リスクの定量的な把握と進化的な観光産業集積仮説

    佐藤 彰洋

    第21回進化経済学会京都大会年次大会  2017.3 

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  • Inference of Extreme Synchrony with an Entropy Measure on a Bipartite Network International conference

    Aki-Hiro SATO

    2017 IEEE 41st Annual Computer Software and Applications Conference (COMPSAC2017)  2017.7 

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  • Data Infrastructure for Data Applications Invited International conference

    Aki-Hiro SATO

    6th International Conference on Tourism Statistics: Measuring Sustainable Tourism  2017.6  UNWTO

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    Venue：Manila, Philippines  

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  • 鉄道駅の利用状況調査に関する昔、今、未来

    佐藤 彰洋

    H29年度第1回人流物流金流ネットワークとその周辺研究会  2017.8 

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  • 津波ハザード推定のための極値理論の応用と津波ハザードメッシュデータの利活用

    佐藤 彰洋

    H29年度統計数理研究所「極値理論の工学への応用」  2017.7 

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  • 世界メッシュコードに基づく各種データの可視化定量化基盤

    佐藤彰洋, 西村正貴, 椿広計

    統計関連学会連合大会  2017.9 

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  • 鉄道駅の利用状況調査に関する昔、今、未来

    佐藤 彰洋

    統計関連学会連合大会  2017.9 

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  • 世界メッシュコードに基づく各種データの可視化

    佐藤彰洋, 西村正貴, 椿広計

    FIT2017 第16回情報科学技術フォーラム  2017.9 

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  • Dynamic Interaction Between Asset Prices and Bank Behavior: A Systemic Risk Perspective International conference

    Aki-Hiro SATO, Paolo TASCA, Takashi ISOGAI

    JAFEE 20th Annual Meeting  2016.3 

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  • 政府統計を用いた国内観光状況の網羅的分析

    佐藤 彰洋

    情報処理学会第78回全国大会  2016.3 

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  • Evaluation Platform for Sustainability of Global Systems International conference

    Aki-Hiro SATO

    JST-NSF Big Data Joint Workshop  2016.5 

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  • 金融市場の価格変動が銀行システムに与える影響

    佐藤 彰洋, Paolo Tasca, 磯貝 孝

    第２０回進化経済学会東京大会２０１５  2016.3 

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  • Risk Assessment for a Global Air Transport System Using Socioeconomic-Technological-Environmental Databases International conference

    Aki-Hiro SATO

    2016 IEEE 40th Annual Computer Software and Applications Conference (COMPSAC2016)  2016.6 

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  • 統計情報可視化システムMeshStats

    佐藤 彰洋

    SMART CITY EXPO 2016  2016.6 

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  • Evaluation Platform for Sustainability of Global Systems Invited International conference

    Aki-Hiro SATO

    Challenges in Data Science International Conference  2016.7 

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  • Large-scale computation of geographical evaluation indicators with socio-economic-environmental databases Invited International conference

    Aki-Hiro SATO

    "Advances in Computational Social Sciences"  2016.7 

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  • Towards High-Performance Global Air Transportation Networks Using Socioeconomic Environmental Data International conference

    Hidefumi Sawai, Aki-Hiro Sato

    IEEE World Congress on Computational Intelligence (IEEE WCCI 2016)  2016.7 

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  • Evaluation Platform for Sustainability of Global Systems International conference

    Aki-Hiro SATO

    Challenges in Data Science International Conference  2016.7 

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  • 世界メッシュコードと世界メッシュ統計作成の試み

    佐藤彰洋, 椿広計

    2016年度統計関連学会連合大会  2016.9 

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  • Risk Assessment for a Global Air Transport System Using Socioeconomic-Technological-Environmental Databases Invited International conference

    Aki-Hiro SATO

    ISM HPCCON 2016  2016.10 

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  • 地域の持続可能性を計る

    佐藤 彰洋

    京都大学アカデミックデイ2016  2016.9 

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  • "経済社会環境データを用いた国際航空機ネットワーク上の人流に対するデータ駆動型シミュレーションとリスク評価

    佐藤 彰洋

    第3回「京」を中核とするＨＰＣＩシステム利用研究課題 成果報告会  2016.10 

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  • 変える・変わる力を生み出すためのビッグデータの利活用とデータ中心科学 Invited

    佐藤 彰洋

    京都大学×NEC公開シンポジウム「デジタルトランスフォーメーションで世界が変わる」  2016.10  京都大学大学院情報学研究科、NEC

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    Venue：京都市  

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  • データ中心科学の事例と世界メッシュ統計作成の試み Invited

    佐藤 彰洋

    第15回データサイエンスセミナー  2016.11 

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  • Introduction to Big Data and Society

    Aki-Hiro SATO

    Digital Society and Big Data Era, 2nd Swiss-Kyoto Symposiu  2016.10 

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  • 交通・観光・農業の横断的連携と統計データの重要性

    佐藤 彰洋

    第7回横幹連合コンファレンス  2016.11 

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  • レジリエンス改善のための災害リスク評価 Invited

    佐藤 彰洋

    第7回横幹連合コンファレンス  2016.11 

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  • n-Starネットワークを用いた国際航空輸送ネットワークの構造改変

    澤井 秀文, 佐藤彰洋

    第7回横幹連合コンファレンス  2016.11 

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  • 国内旅行需要の地域性

    佐藤 彰洋

    京都大学第９回ICTイノベーション  2015.3 

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  • Dynamic Interaction Between Asset Prices and Bank Behavior: A Systemic Risk Perspective International conference

    Aki-Hiro SATO, Paolo TASCA

    CEF2015 -- 21st Computing in Economics and Finance  2015.6 

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  • 国際航空ネットワーク上での遅れ確率SIRモデルによる感染症伝播シミュレーション

    佐藤 彰洋

    京都大学第９回ICTイノベーション  2015.3 

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  • データサイエンスの能力とその測定方法 Invited

    佐藤彰洋, 竹村彰道

    第19回統計教育の方法論ワークショップ・理数系教員授業力向上研究会（東京）  2022.3 

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    File： ms_AHSato_ATakemura.pdf

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  • データ分析とワークショップによる事業検討 Invited

    佐藤彰洋

    データサイエンスとデザインワークショップから導き出す企業の事業戦略  2022.3 

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  • スマートフォンの位置情報付きログデータからメッシュ統計を作成する方法とその利用法

    佐藤彰洋, 堤拓哉, 加藤茂弘, 吉門孝司, 渡邊剛史, 北聖大, 忽滑谷優里, 藤原康史

    日本計算機統計学会第35回シンポジウム  2021.11 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • ビッグデータの活用事例と分析方法

    佐藤 彰洋

    総務省統計研究研修所 特別コース ビッグデータ入門  2018.2  総務省統計研究研修所

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    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：東京都国分寺市  

    ビッグデータとは、人がそのままでは理解することも処理することもできない規模・生成速度・多様
    性を有するデータの総称を指す。このような人間の認識能力を超えるデータを取り扱うには、計算論的
    な観点からの情報システムを常に必要とする。本講義では、ビッグデータを取り扱うために必要となる
    システムの基本構成を参照モデルから学習するとともに、
    ビッグデータを取り扱う上で有効となる計算
    手法ならびにデータ形式（地域メッシュ統計など）の事例について紹介する。本講義を通じて、ビッグ
    データを取り扱うための概念的フレームワークを獲得するとともに、ビッグデータをプレサンプリング
    により小規模なデータ分析に帰着し、CAPD(Check-A
    ct-Plan-Do)サイクルを利用してデータ規模と現象
    に対する理解を深めつつビッグデータ分析へと至るフレームワークの習得を目指す。

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  • データ分析を社会のシミュレーションに利用する

    佐藤 彰洋

    「経済・社会への分野横断的研究会」  2017.9 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • ビッグデータと観光 Invited

    佐藤 彰洋

    国連世界観光機関駐日事務所主催合同セミナー  2017.9  国連世界観光機関駐日事務所

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    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：東京  

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  • 経済社会環境データを用いた経済社会システムのストックとフローに対する大規模計算

    佐藤 彰洋

    第4回「京」を中核とするHPCIシステム利用研究課題 成果報告会  2017.11 

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    Language：Japanese   Presentation type：Poster presentation  

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  • ビッグデータとしての衛星データに見る標準化と分析方法 Invited

    佐藤 彰洋

    リモートセンシング学会評価・標準化研究会  2017.10 

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    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

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  • データ分析を社会のシミュレーションに利用する

    佐藤 彰洋

    第8回横幹連合コンファレンス  2017.12 

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    Language：Japanese   Presentation type：Oral presentation (invited, special)  

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  • World Grid Square Statistics and their application to data analytics Invited International conference

    Aki-Hiro Sato, Shoki Nishimura, Naoki Makita, Tusyoshi Namiki, Hiroe Tsubaki

    UNECE Workshop on Integrating Geospatial and Statistical Standards  2017.11  UNECE, UN-GGIM

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    Language：English   Presentation type：Oral presentation (general)  

    Venue：Stockholm  

    Grid square statistics — a kind of spatial statistics — is useful as a tool for
    analyzing, comparing and synthesizing statistics regarding anonymization. We recently
    proposed a compatible extension of the Japanese national standard for grid square code
    (JIS X0410) for worldwide usage. The grid square approach can produce statistics of
    various types associated with geographic location anywhere in the world, identify a type
    of grid square statistics, and analyze relationships among various types of grid square
    statistics. This paper proposes how a data cube (linked open data) of World Grid Square
    Statistics can be constructed based on data collected from a range of sources, such as gov-
    ernment statistics, satellite imagery, and point data from Internet providers. We present
    a definition of our World Grid Square coding system and a method of generating grid
    square statistics. We further propose a system for providing grid square statistics in a
    number of specific areas regarding their context and demonstrate their application to a
    data visualization and analytics platform.

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  • Characterization of cities based on world grid square statistics about specific properties International conference

    Aki-Hiro SATO

    3rd International Workshop on Big Data for Sustainable Development in IEEE Big Data 2017  2017.12 

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    Language：English   Presentation type：Oral presentation (general)  

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  • "World Grid Square Codes: Definition and an example of world grid square data International conference

    Aki-Hiro Sato, Shoki Nishimura, Hiroe Tsubaki

    3rd International Workshop on Big Data for Sustainable Development in IEEE Big Data 2017  2017.12 

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    Language：English   Presentation type：Oral presentation (general)  

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  • レジリエンス改善のための災害リスク評価

    佐藤 彰洋

    空間データと災害の統計モデル  2018.1 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • "Evaluation Platform for Sustainability of Global Systems International conference

    Aki-Hiro SATO

    New Year Workshop 2018 / Challenge for Society 5.0 - Approaches to Social Innovation –  2018.1  Japan Science and Technology Agency

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    Language：English   Presentation type：Oral presentation (invited, special)  

    Venue：Tokyo  

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  • 国内鉄道事業者の財務と人流との関係

    佐藤彰洋, 内山仁

    H28年度第2回統計数理研究所人流物流ネットワークとその周辺研究会  2018.2 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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  • ビッグデータの活用事例と分析方法

    佐藤 彰洋

    総務省統計研究研修所 特別コース ビッグデータ入門  2018.2  総務省統計研究研修所

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    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

    Venue：東京都国分寺市  

    ビッグデータとは、人がそのままでは理解することも処理することもできない規模・生成速度・多様
    性を有するデータの総称を指す。このような人間の認識能力を超えるデータを取り扱うには、計算論的
    な観点からの情報システムを常に必要とする。本講義では、ビッグデータを取り扱うために必要となる
    システムの基本構成を参照モデルから学習するとともに、
    ビッグデータを取り扱う上で有効となる計算
    手法ならびにデータ形式（地域メッシュ統計など）の事例について紹介する。本講義を通じて、ビッグ
    データを取り扱うための概念的フレームワークを獲得するとともに、ビッグデータをプレサンプリング
    により小規模なデータ分析に帰着し、CAPD(Check-A
    ct-Plan-Do)サイクルを利用してデータ規模と現象
    に対する理解を深めつつビッグデータ分析へと至るフレームワークの習得を目指す。

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  • 世界メッシュ統計を用いた各種統計量の定量化と可視化のプラットフォーム

    佐藤 彰洋

    JST新技術説明会  2018.2 

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    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

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  • 統計情報可視化分析システムMESHSTATS

    佐藤 彰洋

    京都大学第12回ICTイノベーション  2018.2 

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    Language：Japanese   Presentation type：Poster presentation  

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  • 世界メッシュ統計に基づく都市の特徴付け

    佐藤 彰洋

    情報処理学会第80回年次大会  2018.3 

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    Language：Japanese   Presentation type：Oral presentation (general)  

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▼display all

Industrial property rights

  • 自然言語入力を用いたメッシュデータ処理の支援装置

    佐藤彰洋, 加藤茂博

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    Applicant：株式会社時空間・行動連鎖研究所

    Application no：特願2025-101307  Date applied：2025.6

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  • DISTRIBUTED MESH DATA SERVER AND PROGRAM

    Akihiro SATO, Shigehiro KATO

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    Applicant：RESEARCH INSTITUTE of SPATIOTEMPORAL BEHAVIOR CHAINS

    Application no：PCT/JP2024/087518  Date applied：2024.10

    Announcement no：特開2025-529802  Date announced：2024.10

    Publication no：WO2025/126679 A1  Date published：2025.6

    Patent/Registration no：特許7763019  Date registered：2025.10  Date issued：2025.10

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  • System, Method, and Program for generating grid square statistics from data with geographical information

    Aki-Hiro Sato, Koichiro Mori

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    Applicant：Kyoto University; J-space system

    Application no：特願2019-68605  Date applied：2019.3

    Announcement no：特開2020-166739  Date announced：2020.10

    Patent/Registration no：特許7328650  Date registered：2023.8  Date issued：2023.8

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Works

  • MESHSTATS for Research (www.meshstats.org)

    Aki-Hiro Sato

    2021.4 - 2024.3

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    Work type：Web Service  

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  • MESHSTATS for Research (www.meshstats.net)

    Aki-Hiro Sato

    2020.4

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    Work type：Web Service  

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  • MESHSTATS for Research (www.meshstats.xyz)

    Aki-Hiro Sato

    2015.12

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    Work type：Web Service  

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Awards

  • Chairperson of the Board of Trustees and CEO & President Award in FY2023

    2024.3   Yokohama City University  

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  • 2015 Kimura Award

    2016.4  

    Aki-Hiro SATO

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  • Excellent Research project award in the Second Project Report Meeting of the HPCI System Including K computer

    2016   RIST  

    Aki-Hiro SATO

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  • IPSJ Yamashita SIG Research Award

    2007   Information Processing Society of Japan  

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    Country：Japan

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Research Projects

  • 秘匿化メッシュ統計データと道路経路データを連動した空間検索方式の開発 とその利活用

    2025.5 - 2026.3

    一般財団法人日本デジタル道路地図協会  令和7年度（2025年度）研究助成  研究助成

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    Authorship：Principal investigator 

    Grant amount：\1491000 （ Direct Cost: \1491000 ）

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  • 港湾別インバウンド需要予測プログラムの開発

    2024.7 - 2026.3

    株式会社丹青社  共同研究  共同研究

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    Authorship：Principal investigator  Grant type：Collaborative (industry/university)

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  • 秘匿化メッシュ統計データと道路経路データを連動した空間検索方式の開発とその利活用

    2024.5 - 2025.3

    一般財団法人日本デジタル道路地図協会  令和6年度（2024年度）研究助成  研究助成

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    Authorship：Principal investigator 

    Grant amount：\992000 （ Direct Cost: \992000 ）

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  • Development of interactive and statistical analysis methods enabling knowledge discoverty from sattelite big data

    Grant number：24K14859  2024.4 - 2028.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）

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  • 「メッシュ型流動人口データ」を利用した公的統計の代替・補完に関する共同研究

    2024.4 - 2025.3

    総務省統計改革実行推進室  共同研究  共同研究

    佐藤彰洋

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    Authorship：Principal investigator 

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  • データ分析者主導型社内データ活用ワークショッププログラムの開発

    2023.12 - 2025.3

    株式会社丹青社  共同研究  共同研究

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    Authorship：Principal investigator 

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  • 「e.CYCLE × データサイエンス」で作るサステナブルな未来都市

    2022.12 - 2025.3

    まち未来製作所株式会社  共同研究

    佐藤彰洋

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    Authorship：Principal investigator 

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  • データ駆動型デザイン思考を用いたDX推進に資する事業・商品開発

    2022.10 - 2023.3

    スカイファーム株式会社  共同研究

    佐藤彰洋

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    Authorship：Principal investigator 

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  • Analysis of Questionnaire survey results about Japanese DMOs' independent revenue source develpment

    2021.8 - 2022.3

    World Business Associates Co., Ltd. 

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    Authorship：Principal investigator 

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  • Reliability and evalulation of dynamic population data produced by using geographical information collected from mobile phones

    2021.6 - 2022.3

    Kokusai Kogyo Co., Ltd. 

    Aki-Hiro Sato

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    Authorship：Principal investigator 

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  • Analysis of consumer behavior about online food delivery ordering in commercial facilities

    2021.6 - 2022.3

    SKY FIRM, Inc. 

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    Authorship：Principal investigator 

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  • Architecture Design and Actual Proof for Self-distributed World Grid Square Statistics Platform

    2020.11 - 2023.3

    Japan Science and Technology Agency (JST)  JST-Mirai Program 

    Aki-Hiro Sato

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    Authorship：Principal investigator 

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  • Evaluation Platform for Sustainability of Global Systems

    2015.10 - 2020.3

    Japan Science and Technology Agency  PRESTO 

    SATO Aki-Hiro

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    Authorship：Principal investigator  Grant type：Competitive

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  • A study on resilience from systemic risks in the socio-economic system

    Grant number：26282089  2014.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Aruka Yuji, TRAN Kien, TRAN QHAnh, Helbing Dirk, Kirman Alan, Chakrabarti Bikas K, Rosser J. Barkley, Jr., Chen Shu-Heng, Mimkes Jürgen, Scalas Enrico, Chakrabarti Anindya S.

    　 More details

    Grant amount：\16380000 （ Direct Cost: \12600000 、 Indirect Cost：\3780000 ）

    In our argument we mainly groped for some integrative measure to identify a systemic risk in the three-layered stages of employment, goods, and finance. In practice, we have then shown “α-centrality” in the network of the input-output table available from the open data by government as a “checkpoint” to present how a macroscopic change of the macro economy will be amplified in each stage and between them. It is noted that this idea was driven from the recent arguments of “probability in biology.” Furthermore, we also showed that various sectoral correlations on employment or stock prices contributed to a series of emergence of systemic risks of the economy. According to our big data analysis, for instance, the expected fluctuations of the stock prices never support the efficient market hypothesis. Finally, we believe that the informative systems outside the market oriented efficiency are indispensable to identify the systemic risks of the macro economy in the future ICT society.

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  • Methods for Optimizing aviation networks for the next-generation with socioeconomic and environmental databases

    2013.4 - 2015.3

    Japan Society for the Promotion of Science  Grant-in-Aid-for Scientists (C) 

    SATO Aki-Hiro

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    Authorship：Principal investigator  Grant type：Competitive

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  • Model and inference of extreme synchrony in collective behavior of agents

    Grant number：23760074  2011.4 - 2012.3

    Japan Society for the Promotion of Science  Grant-in-Aid-for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    SATO Aki-Hiro

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    Authorship：Principal investigator  Grant type：Competitive

    This study proposes a method to quantify the structure of a bipartite graph with networkentropy from a statistical-physical point of view. The network entropy of a bipartite graph with random links is computed from numerical simulation. As an applic ation of the proposed method to analyze collective behavior, the affairs in which participants quote and trade in the foreign exchange market are quantified by using the data during the period from June 2007 to November 2012 (about 580,000,000 records with 1 -second resolution). The network entropy per node is found to correspond to the macroeconomic situation. A finite mixture of Gumbel distributions is used to fit with the empirical distribution for the minimum values of network entropy per node in each week. The mixture of Gumbel distributions with parameter estimates by segmentation procedure is verified by both Kolmogorov-Smirnov and Anderson-Dearling tests. The finite mixtures of Gumbel distributions which extrapolate the empirical probability of extreme events have an explanatory power with a statistically significant level.

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  • Comprehensive Analysis on Information Transmission among Agents

    Grant number：21760059  2009 - 2010

    Japan Society for the Promotion of Science  Grant-in-Aid-for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    Aki-Hio SATO

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    Authorship：Principal investigator  Grant type：Competitive

    In this study, I aimed to develop well-balanced methodologies among collection of comprehensive data, a computational system, mathematical technique, and a field study. Specifically, I attempted to develop methods to capture states of communication among agents from a holistic point of view based on a large amount of data and agent-based modeling regarding causality of agent behavior.
    I collected comprehensive high-resolution data of the foreign exchange market (May 2007 to January 2011; 45 months) and constructed the parallel computing system in order to store and calculate them. Further, I developed methods to capture structure of agent communication through occurrence of quotations and transactions and implemented computer software based on the methodologies. Throughout the period of this investigation, we suffered from several extreme events relating to economic crises across the globe such as the latest global financial crisis (July 2008 to February 2009), and the Euro shock (April to May 2010). It was confirmed that the proposed methods can capture these crises and detect influence relating to a large number of market participants. It is concluded that synchronous activities relating to a large number of population may drive the change of macroeconomic structure.

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  • 閾値系における情報処理と自己調節ー揺らぎ工学の進化をめざしてー

    Grant number：20560055  2008 - 2009

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    宗像 豊哲, 佐藤 彰洋

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    Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）

    閾値系における揺らぎと情報処理の関係を「自己調節」と「ネットワーク」をキーワードとして考察・研究した。主な成果としては以下の2点があげられる。
    1)単純閾値系における確率共鳴と自己調節:確率共鳴ではノイズ強度を変えたときの体系(閾値系)の応答を考えるが、我々はここに例えば閾値の適応制御(自己調節)の効果を取り入れ、情報処理性能の評価によく用いられるSN比が増大することを示した。単純閾値系の一種と考えられるダブルウエル系についても同様の研究を行うと同時に、この系を用いて複雑ネットワークを構成し、その情報処理能力を同様な方法で研究した。ここでは、結合系の複雑な多体問題を、一体問題に帰着させるアイデアを用いて、理論解析を行い、計算機実験を見事に再現なる理論の成功した。
    2)遅れをもつ確率系における相関と情報処理:近年遅れをもつ情報処理系が注目されている。これは、情報の伝達に一定の時間が掛かることによる。2値系やダブルウエル系について、計算機実験を行うと同時に、一般のN結合系に解析解を与えた。これは、これまでのN=1の場合を一般化したのみならず、さらに複雑な体系の研究に対する出発点を与えるものになっており、注目されている。
    これらの成果は下に示された3つの論文に発表されている。

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  • 情報伝達の観点から迫るエージェントモデルの構造と解析

    Grant number：17760067  2005 - 2007

    日本学術振興会  科学研究費助成事業  若手研究(B)

    佐藤 彰洋

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    Grant amount：\3400000 （ Direct Cost: \3400000 ）

    エージェントの情報の知覚から行動に至る過程を心理学で提唱されているSatirの7段階モデルに基づきモデル化し、前年度に提案したN人の市場参加者がM種類の金融商品を交換する金融市場のエージェントモデルを説明能力の高まる方向に拡張した。そして、平成17年度と18年度に実施した実証分析から得られた観測事実と対比しながらモデルの数値分析および理論分析を行い以下の成果を得た:
    1、行動頻度のスペクトル分析の結果得られた特徴的周期成分の周波数のグループ構造は市場参加者の情報の知覚と行動に関するグループ構造と関係する可能性がある。
    2、エージェントの情報の知覚と行動を決定するパラメータの動的変化に応じて、行動頻度と注文価格の類似度の動的変化が生じており、エージェントのパラーメータ分布形状と行動頻度間の類似性との間の相関関係がある。
    3、標準偏差の2倍以上の価格変動が生じうる理由は市場参加者の予測行動と関係する。
    4、エージェントモデルの行動頻度と対数収益率に対応する変数に対して、平均場的な縮約近似を行うことによりエージェントのパラメータ変化に起因した時変パラメータを含む時変多変量自己回帰過程(時変VARモデル)を導出した。
    エージェント集団に対して、行動頻度の周期的振る舞いの構造および、それらの類似性の時間変化を調べることにより、参加者集団の組織構造および参加者の内部状態を推定できる可能性を示した。このことは、エージェント集団の情報伝達の構造と内部状態を推定する方法として、行動頻度で観測される確率共鳴(共振)現象および行動頻度間の類似性構造を利用することに対する理論的根拠を与えた意義がある。また、本研究成果は、金融市場を含む人間の社会活動を、観測可能な行動の様子を網羅的に収集することにより、個人を特定することなく匿名性の高い状況で定量化・可視化するための基礎技術となり、重要な見地をもたらした。

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  • 長距離・長時間の相互作用を有する系の統計動力学的研究

    Grant number：00J06178  2000

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    佐藤 彰洋

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    Grant amount：\800000 （ Direct Cost: \800000 ）

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  • statistical characteristics of random multiplicative processes and their applications

    1997

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    Grant type：Competitive

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Teaching Experience

  • Excersise on Data Analytics

    2024.9 Institution：Yokohama City University

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  • Parallel Distirubuted Processing

    2020.9 Institution：Yokohama City University

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  • Exercises on Data Analytics II

    2020.9 - 2024.2 Institution：Yokohama City University

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  • Special Lecture about Design Thinking

    2020.4 Institution：Yokohama City University

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  • Special Lecture about Cloud Computing

    2020.4 Institution：Yokohama City University

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  • Computer Mathematics

    2020.4 Institution：Yokohama City University

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  • Exercises on Data Analytics I

    2020.4 - 2024.2 Institution：Yokohama City University

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Social Activities

  • MESHSTATSアプリケーションアイデアソン2025運営実行委員会委員長

    Role(s)： Organizing member

    一般社団法人世界メッシュ研究所、横浜市立大学大学院データサイエンス研究科/データサイエンス学部  MESHSTATSアプリケーションアイデアソン2025  2025.3 - 2025.5

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    Type：Seminar, workshop

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  • MESHSTATSアプリケーションアイデアソン2024運営実行委員会委員長

    Role(s)： Organizing member

    一般社団法人世界メッシュ研究所、横浜市立大学大学院データサイエンス研究科/データサイエンス学部  MESHSTATSアプリケーションアイデアソン2024  2024.3 - 2024.5

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    Type：Seminar, workshop

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  • MESHSTATSアプリケーションアイデアソン2023運営実行委員会委員長

    Role(s)： Organizing member

    一般社団法人世界メッシュ研究所、横浜市立大学大学院データサイエンス研究科/データサイエンス学部  2023.3 - 2023.5

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    Type：Seminar, workshop

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Media Coverage

  • 北海道、感染状況に「新指標」 市民にはわかりにくい？ Newspaper, magazine

    朝日新聞  2021.2

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  • 「重症者、死者がさらに増える」 研究者が警告する「危うい状況」と必要なリセット Newspaper, magazine

    毎日新聞  2021.1

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  • 「コロナはいつ終わるのか」における取材協力 Newspaper, magazine

    講談社  週刊現代  2020.12

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  • 新型コロナウイルスシミュレーション取材協力 TV or radio program

    テレビ大阪  やさしいニュース  2020.11

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  • 「コロナ”第3波”到来か １月上旬には東京で感染者６万人予想も」 Newspaper, magazine

    週刊朝日  2020.11

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  • 経済教室 統計学と感染症(下) 「全員感染のリスクも考慮を」 Newspaper, magazine

    日本経済新聞  2020.9

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  • 新型コロナウイルスに関するインタビュー取材 TV or radio program

    日本テレビ  スッキリ  2020.7

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  • 東京都の新型コロナウイルス新規感染者数の試算 TV or radio program

    テレビ朝日  羽鳥真一モーニングショー  2020.7

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  • 不可避のパンデミック第2波に備えよ

    日経メディカル  2020.4

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  • Japan urgues public to reduce social contacts by 80% Newspaper, magazine

    2020.4

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  • 接触時間９８．２％減なら４月下旬ごろ新規感染ゼロに…８割減では再上昇も Newspaper, magazine

    スポーツ報知  2020.4

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  • 福岡99.8%、東京98%、新規感染減に不可欠な「行動抑制率」専門家が試算 Newspaper, magazine

    毎日新聞  2020.4

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  • 福岡県人との接触92％減を 横浜市立大教授が分析 Newspaper, magazine

    西日本新聞  2020.4

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  • 新型コロナ/横浜市立大学教授・佐藤彰洋氏に聞く 感染予測、10日に5000人 Newspaper, magazine

    日刊工業新聞  2020.4

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  • 人と接触、大阪は「普段の20分の1以下に」 東京は… Newspaper, magazine

    朝日新聞  2020.4

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    Author：Other 

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Academic Activities

  • 2025 International Conference on Big Data (IEEE Big Data 2025)

    Role(s)： Peer review

    2025.9 - 2025.10

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    Type：Peer review 

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  • 2024 International Conference on Big Data (IEEE Big Data 2024)

    Role(s)： Peer review

    2024.9 - 2025.10

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    Type：Peer review 

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  • 2023 International Conference on Big Data (IEEE Big Data 2023)

    Role(s)： Peer review

    2023.9 - 2023.10

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    Type：Peer review 

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