• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

An analysis of opinion polarization on social media

Research Project

Project/Area Number 15KT0133
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section特設分野
Research Field Conflict Studies
Research InstitutionRissho University

Principal Investigator

Yamamoto Hitoshi  立正大学, 経営学部, 教授 (70328574)

Research Collaborator Ogawa Yuki  
Project Period (FY) 2015-07-10 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords世論形成 / 規範 / 互恵性 / 協力の進化 / ソーシャルメディア / エージェントシミュレーション / 世論の分断化 / 互恵的協力 / 社会シミュレーション / 集団極性化 / 規範の進化 / シミュレーション / 世論形成モデル / 極化現象 / 沈黙の螺旋
Outline of Final Research Achievements

This study clarified the actual condition of the segmentation of public opinion on social media. The study analyzed whether or not the news audience is fragmented in the Japanese Twitter-sphere and found that there is no fragmentation in the main media. Moreover, the study explored how the conflict and coexistence of the social norm occur was analyzed using the agent-based simulation. The results show that strict norms are necessary for the early stage of the coevolution process of norms and cooperation, and that there is a transition process in which tolerant norms gradually permeate society.

Academic Significance and Societal Importance of the Research Achievements

ソーシャルメディアの発展により既存の社会集団を越えたコミュニケーションが一般化しつつある中で、世論の分断がソーシャルメディア上で実際の起こっているのかを大量のTwitterデータの分析を通じて検証した。また世論や社会規範がいかなるメカニズムで形成され進化していくのかをシミュレーション技術を用いて分析して、社会規範が進化する過程を明らかにできた。この知見は新たな情報共有スペースにおける制度設計などへの応用が期待できる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (45 results)

All 2019 2018 2017 2016 2015

All Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 10 results,  Open Access: 10 results,  Acknowledgement Compliant: 1 results) Presentation (33 results) (of which Int'l Joint Research: 14 results,  Invited: 2 results)

  • [Journal Article] Evolution of Cooperation with Peer Punishment under Prospect Theory2019

    • Author(s)
      Uchida Satoshi、Yamamoto Hitoshi、Okada Isamu、Sasaki Tatsuya
    • Journal Title

      Games

      Volume: 10(1) Issue: 1 Pages: 11-11

    • DOI

      10.3390/g10010011

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 規範エコシステムアプローチによる規範と協力の共進化メカニズム2019

    • Author(s)
      山本仁志
    • Journal Title

      人工知能学会誌

      Volume: 4(2) Pages: 160-167

    • NAID

      130007917552

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Social Simulation Analysis Toward a Cooperative Society2018

    • Author(s)
      山本仁志
    • Journal Title

      Journal of The Society of Instrument and Control Engineers

      Volume: 57 Issue: 6 Pages: 438-443

    • DOI

      10.11499/sicejl.57.438

    • NAID

      130007398803

    • ISSN
      0453-4662, 1883-8170
    • Year and Date
      2018-06-10
    • Related Report
      2018 Annual Research Report
    • Open Access
  • [Journal Article] News audience fragmentation in the Japanese Twittersphere2018

    • Author(s)
      Kobayashi, T., Ogawa, Y., Suzuki, T. and Yamamoto, H.
    • Journal Title

      Asian Journal of Communication

      Volume: 28 Issue: 3 Pages: 1-17

    • DOI

      10.1080/01292986.2018.1458326

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of beliefs about sanctions on promoting cooperation in a public goods game2018

    • Author(s)
      Yamamoto Hitoshi、Suzuki Takahisa
    • Journal Title

      Palgrave Communications

      Volume: 4 Issue: 1

    • DOI

      10.1057/s41599-018-0203-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Theoretical Approach to Norm Ecosystems: Two Adaptive Architectures of Indirect Reciprocity Show Different Paths to the Evolution of Cooperation2018

    • Author(s)
      Uchida Satoshi、Yamamoto Hitoshi、Okada Isamu、Sasaki Tatsuya
    • Journal Title

      Frontiers in Physics

      Volume: 6

    • DOI

      10.3389/fphy.2018.00014

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A norm knockout method on indirect reciprocity to reveal indispensable norms2017

    • Author(s)
      Yamamoto, H., Okada, I., Uchida, S., & Sasaki, T.
    • Journal Title

      Scientific Reports

      Volume: 7

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Evolution of Reputation-Based Cooperation in Regular Networks2017

    • Author(s)
      Sasaki, T., Yamamoto, H., Okada, I., & Uchida, S.
    • Journal Title

      Games

      Volume: 8(1) Issue: 1 Pages: 8-8

    • DOI

      10.3390/g8010008

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Exploring an Effective Incentive System on a Groupware2016

    • Author(s)
      Toriumi, F., Yamamoto, H., & Okada, I.
    • Journal Title

      Journal of Artificial Societies and Social Simulation

      Volume: 19(4) Issue: 4

    • DOI

      10.18564/jasss.3166

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] How to keep punishment to maintain cooperation: Introducing social vaccine.2016

    • Author(s)
      Yamamoto, H., & Okada, I
    • Journal Title

      Physica A

      Volume: 443 Pages: 526-536

    • DOI

      10.1016/j.physa.2015.08.053

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Effect of Incentives and Meta-incentives on the Evolution of Cooperation2015

    • Author(s)
      Okada, I., Yamamoto, H., Toriumi, F., & Sasaki, T.
    • Journal Title

      PLOS Computational Biology

      Volume: 11(5) Issue: 5 Pages: e1004232-e1004232

    • DOI

      10.1371/journal.pcbi.1004232

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] What Affects the Spiral of Silence and the Hard Core on Twitter ? An Analysis of the Nuclear Power Issue in Japan2015

    • Author(s)
      Miyata, K., Yamamoto, H., & Ogawa, Y.
    • Journal Title

      American Behavioral Scientist

      Volume: vol.59, no.9 Issue: 9 Pages: 1129-1141

    • DOI

      10.1177/0002764215580618

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Presentation] 返報と恩送りに公正世界信念が与える影響の検討2019

    • Author(s)
      梅谷凌平、山本仁志、後藤晶、岡田勇
    • Organizer
      社会情報システム学研究会第25回シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] An analysis of social dilemma in the moral AI society2019

    • Author(s)
      Yamamoto, H.
    • Organizer
      52nd Annual Hawaii International Conference on System Sciences
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 規範と協力の共進化に対する規範エコシステムアプローチ2019

    • Author(s)
      山本仁志
    • Organizer
      第25回社会情報システム学シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] A comparative experiment on the first-order information an the second-order information in indirect reciprocity2018

    • Author(s)
      Okada I, Yamamoto H, Sato Y, Uchida S, Sasaki T
    • Organizer
      30th annual meeting of the Human Behavior and Evolution Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evolution of Image-scoring in indirect reciprosity2018

    • Author(s)
      Uchida S, Okada I, Yamamoto H, Sasaki T
    • Organizer
      17th Asia-Pacific conferences on <<Fundamental Problems of Opto- and Microelectronics >>
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 間接互恵における評判情報の参照戦略の分析2018

    • Author(s)
      岡田勇、山本仁志、佐藤克己、内田智士、佐々木達矢
    • Organizer
      日本社会心理学会第59回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ゲーム理論による「恩送り」の解析2018

    • Author(s)
      内田智士、山本仁志、岡田勇
    • Organizer
      平成30年電気学会電子・情報・システム部門大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] エコシステムアプローチによる自発的参加あり繰返し囚人のジレンマの研究2018

    • Author(s)
      山本仁志、岡田勇、田口拓哉、武藤正義
    • Organizer
      第15回ネットワーク生態学シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] An agent-based approach to a norm ecosystem: Exploring indispensable norms for promoting and maintaining cooperation2018

    • Author(s)
      Yamamoto, H., Okada, I., Uchida, S. & Sasaki, T.
    • Organizer
      Social Simulation 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 恩送りの規定要因:公正世界信念とUpstream互恵性の関連2018

    • Author(s)
      山本仁志、梅谷凌平
    • Organizer
      日本社会心理学会第59回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Social Simulation on Social Dilemmas2018

    • Author(s)
      Yamamoto, H.
    • Organizer
      HICSS2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 人の持つ間接互恵規範の分類と他の規範に対する認識2018

    • Author(s)
      土樋侑矢,山本仁志
    • Organizer
      第24回社会情報システム学シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 他者に対する規範の推測がネットワークサイズに与える影響2018

    • Author(s)
      大森一輝, 山本仁志
    • Organizer
      第24回社会情報システム学シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 恩送りという幻想 -公正世界信念がもたらすUpstream互恵性-2018

    • Author(s)
      梅谷凌平, 内田裕也
    • Organizer
      第24回社会情報システム学シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 規範ノックアウト手法を用いた協力の進化のための必須規範の分析2018

    • Author(s)
      山本仁志
    • Organizer
      ゲーム理論ワークショップ2018
    • Related Report
      2017 Research-status Report
  • [Presentation] 協力を生み出す規範と維持する規範:規範ノックアウト手法を用いたエージェントシミュレーションによる分析2018

    • Author(s)
      山本仁志, 岡田勇, 内田智士, 佐々木達矢
    • Organizer
      第15回社会システム部会&第59回システム工学部会合同研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] 影の英雄: 協力の進化を支える規範2017

    • Author(s)
      山本仁志, 岡田勇, 内田智士, 佐々木達矢
    • Organizer
      数理社会学会
    • Place of Presentation
      関西大学(大阪)
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] Unsung hero norms: 協力の進化を支える規範2017

    • Author(s)
      山本仁志, 岡田勇, 内田智士, 佐々木達矢
    • Organizer
      第一回計算社会科学ワークショップ
    • Place of Presentation
      学習院大学(東京)
    • Year and Date
      2017-02-26
    • Related Report
      2016 Research-status Report
  • [Presentation] Underestimating of reward and overestimating of punishment in public good game.2017

    • Author(s)
      Yamamoto, H. & Suzuki, T.
    • Organizer
      17th International Conference on Social Dilemmas
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of a norm ecosystem to understand different roles of social norms in indirect reciprocity2017

    • Author(s)
      Yamamoto, H., Okada, I., Uchida, S. & Sasaki, T.
    • Organizer
      Mathematical Models in Ecology and Evolution
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Is an unsung hero necessary? An analysis of social norms required for the transition to cooperative societies2017

    • Author(s)
      Yamamoto, H., Okada, I., Uchida, S. & Sasaki, T.
    • Organizer
      The Social Simulation Conference 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Effect of Second-order Rewards and Punishment in Public Goods Game --- An Experiment.2017

    • Author(s)
      Akiyama, E., Okada, I., Toriumi, F. & Yamamoto, H.
    • Organizer
      17th International Conference on Social Dilemmas
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Games with prospect: a simple solution mechanism to social dilemma2017

    • Author(s)
      Uchida, S. & Yamamoto, H.
    • Organizer
      Mathematical Models in Ecology and Evolution
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Expectation for response encourages social media2017

    • Author(s)
      Toriumi, F., Okada, I. & Yamamoto, H.
    • Organizer
      The Social Simulation Conference 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Norm Ecosystem on Evolution of Cooperation2017

    • Author(s)
      山本仁志
    • Organizer
      合同エージェントワークショップ&シンポジウム2017
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 認知のゆがみがもたらす懲罰および報酬行動への影響について2017

    • Author(s)
      内田智士, 山本仁志
    • Organizer
      平成29年 電気学会 電子・情報・システム部門大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Alternation of dominant social norms on the evolution of indirect reciprocity2016

    • Author(s)
      Yamamoto,H.
    • Organizer
      The European Conference on Mathematical and Theoretical Biology
    • Place of Presentation
      ノッティンガム大学(イギリス)
    • Year and Date
      2016-07-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] サンクションの誤推定がもたらす協調行動:ワンショット公共財ゲームによる検討2016

    • Author(s)
      山本仁志, 遠藤はるか
    • Organizer
      計測自動制御学会 第10回社会システム部会研究会
    • Place of Presentation
      大濱信泉記念館(沖縄)
    • Year and Date
      2016-03-17
    • Related Report
      2015 Research-status Report
  • [Presentation] 懲罰か報酬か:公共財ゲームにおけるサンクションシステムの有効性の検討2016

    • Author(s)
      山本仁志, 遠藤はるか
    • Organizer
      社会システムと情報技術研究ウィーク
    • Place of Presentation
      ルスツリゾート(北海道)
    • Year and Date
      2016-03-02
    • Related Report
      2015 Research-status Report
  • [Presentation] 社会的ジレンマにおける報酬の過小視と懲罰の過大視2016

    • Author(s)
      遠藤はるか, 山本仁志
    • Organizer
      第22回社会情報システム学シンポジウム
    • Place of Presentation
      電気通信大学(東京)
    • Year and Date
      2016-01-21
    • Related Report
      2015 Research-status Report
  • [Presentation] Twitterにおけるニュースオーディエンスの分断化2015

    • Author(s)
      小川祐樹,小林哲郎,山本仁志,鈴木貴久
    • Organizer
      日本社会心理学会第56回大会
    • Place of Presentation
      東京女子大学(東京)
    • Year and Date
      2015-11-01
    • Related Report
      2015 Research-status Report
  • [Presentation] Modeling CGM as Public Goods Game2015

    • Author(s)
      Fujio Toriumi, Hitoshi Yamamoto and Isamu Okada
    • Organizer
      The Eleventh Conference of the European Social Simulation Association
    • Place of Presentation
      Groningen(Nederland)
    • Year and Date
      2015-09-17
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modeling Consumer Generated Media by Generalized Meta-Sanctions Game2015

    • Author(s)
      Toriumi, Fujio, Hitoshi Yamamoto, and Isamu Okada
    • Organizer
      International Workshop on Agent-based Approach in Economic and Social Complex Systems
    • Place of Presentation
      Bali(Indonesia)
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2015-07-14   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi