Current Affiliation Organization 【 display / non-display 】

Current Affiliation Organization 【 display / non-display 】

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External Career 【 display / non-display 】

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Affiliated academic organizations 【 display / non-display 】

Affiliated academic organizations 【 display / non-display 】

Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

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Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Published Papers 【 display / non-display 】

Published Papers 【 display / non-display 】

• Reconstructing Alcohol Sales Distribution in Japanese Supermarkets with an Extended Random Multiplicative Process

  Kenta Yamada, Takuto Nakama, Jiwei J. Jiang, Hideki Takayasu, Misako Takayasu

  Proceedings of The Fifth France's International Conference on Complex Systems (FRCCS 2025) ( Springer Nature Switzerland )    51 - 60   2025.10 [ Peer Review Accepted ]

  Type of publication: Research paper (international conference proceedings)

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    DOI

• A Forecast Model for COVID-19 Spread Trends Using Blog and GPS Data from Smartphones

  Ryosuke Susuta, Kenta Yamada, Hideki Takayasu, Misako Takayasu

  Entropy ( MDPI )  27 ( 7 ) 686   2025.06 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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    DOI

• Scale-Dependent Power Law Properties in Hashtag Usage Time Series of Weibo

  J. J. Jiang, K. Yamada, H. Takayasu, and M. Takayasu

  Scientific Reports   13 ( 1 )   2023 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Analyses of daily market impact using execution and order book information

  Kenta Yamada, Takayuki Mizuno

  Frontiers in Physics ( Frontiers )  8   2020 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

  　View Summary

  We analyzed the Tokyo Stock Exchange (TSE) for a 29-month period from August 2014 to December 2016, including every transaction and order book snapshot, and confirmed through a simple statistical test that the market impact depends on each stock. Based on a correlation analysis, we found that the market impact slowly changes over time. From an order book analysis, negative correlations were found between the market impact and the averaged limit order volumes in the order book. We also clarified that one of the factors of market impact is the volume of limit orders in the order book.

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    DOI

• Estimation of Economic Indicator Announced by Government From Social Big Data

  Kenta Yamada, Hideki Takayasu, Misako Takayasu

  Entropy   20 ( 11 ) 852   2018.11 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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Other Papers 【 display / non-display 】

Other Papers 【 display / non-display 】

• A Marketing Simulation of a Retail Store with the Consumer Reactions to Out-of-Shelf Based on a POS Data

  Matsumura Naoki, Izumi Kiyoshi, Yamada Kenta

  Transactions of the Japanese Society for Artificial Intelligence ( The Japanese Society for Artificial Intelligence )  0 ( 0 ) F - F13_1-8   2016

   

  DOI

• Stock Price Estimation by Spatio-temporal Pattern Analysis of High Frequency Tick Data

  中山 敦貴, 山田 健太, 和泉 潔

  人工知能学会全国大会論文集 ( 人工知能学会 )  29   1 - 3   2015

   

• Dynamics of Social Networks Observed in a Big Blog Date Base(<Special Issue>Perspectives in Socio-Econo-Physics -Network Structures and Functions of Socio-Economic Systems)

  YAMADA Kenta, SANO Yukie, TAKAYASU Hideki, TAKAYASU Misako

  Systems, control and information ( システム制御情報学会 )  56 ( 10 ) 536 - 541   2012.10

   

  DOI

• AT-3-3 Analyzing and Modeling of Boom Construction by Using Huge Blog Data

  Yamada Kenta, Sano Yukie, Takayasu Hideki, Takayasu Misako

  Proceedings of the IEICE General Conference ( 一般社団法人電子情報通信学会 )  2012   "SS - 48"-"SS-50"   2012.03

   

• AT-3-2 STATISTICAL PROPERTIES OF NUMBER FLUCTUATIONS OBSERVED IN BLOGOSPHERE

  Sano Yukie, Yamada Kenta, Takayasu Hideki, Takayasu Misako

  Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2012   "SS - 45"-"SS-47"   2012.03

   

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Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• ソーシャルビッグデータを用いた流行とフェイクニュース拡散現象の解明

  山田　健太

  計算社会科学とその周辺セミナー  2019.12  -  2019.12 

• 大規模ソーシャルデータを用いた流行の予兆検知手法の開発

  山田　健太

  2019ソーシャルメディア研究ワークショップ  2019.11  -  2019.11 

• ソーシャルメディア上の流行と誤情報拡散現象の解明＋データサイエンス教育の工夫＠成城大学

  山田　健太

  成城大学データサイエンス教育研究センターシンポジウム  2019.11  -  2019.11 

• 大規模ブログデータを用いた経済指標の推定

  山田健太，高安秀樹，高安美佐子

  2018ソーシャルメディア研究ワークショップ  2018.11  -  2018.11 

• Estimation of Economic Indicator Announced by Government From Social Big Data

  Kenta Yamada, Hideki Takayasu and Misako Takayasu

  Conference on Complex Systems 2018 (CCS2018)  2018.09  -  2018.09 

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Academic Awards 【 display / non-display 】

Academic Awards 【 display / non-display 】

• The 36th JSST Annual Conference Outstanding Presentation Award

  2017.10     Simulations of word popularity dynamics observed from large scale social data

  Winner: Kenta Yamada,Hideki Takayasu,Misako Takayasu

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Grant-in-Aid for Scientific Research(C)

  Project Year: 2025.04  -  2028.03 

  Total: 4,420,000 (YEN)

• Grant-in-Aid for Young Scientists(B)

  Project Year: 2013.04  -  2016.03