SNSにおける関係形成原理  --mixiのデータ分析--

  • 松尾 豊
    独立行政法人 産業技術総合研究所 / スタンフォード大学
  • 安田 雪
    東京大学大学院 経済学研究科

書誌事項

タイトル別名
  • How Relations are Built within a SNS World -- Social Network Analysis on Mixi --
  • SNS ニ オケル カンケイ ケイセイ ゲンリ mixi ノ データ ブンセキ

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説明

Our purpose here is to (1) investigate the structure of the personal networks developed on mixi, a Japanese social networking service (SNS), and (2) to consider the governing mechanism which guides participants of a SNS to form an aggregate network. Our findings are as follows:the clustering coefficient of the network is as high as 0.33 while the characteristic path lenght is as low as 5.5. A network among central users (over 300 edges) consist of two cliques, which seems to be very fragile. Community-affiliation network suggests there are several easy-entry communities which later lead users to more high-entry, unique-theme communities. The analysis on connectedness within a community reveals the importance of real-world interaction. Lastly, we depict a probable image of the entire ecology on {\\em mixi} among users and communities, which contributes broadly to social systems on the Web.

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