Communities in an inter-firm network and their geographical perspectives

Ritsu Sakuramachi, Naoya Fujiwara, Shota Fujishima, Yuki Akiyama, Ryosuke Shibasaki

研究成果: Conference contribution

抄録

We detect communities, or groups of firms having mutually close business relationship, in a huge inter-firm transaction network and study their geo-graphical perspectives. We apply a random-walk based method proposed in network science for the community detection to a Japanese inter-firm network having around 0.7 million firms. We found that the community size follows a power-law distribution, and high-ranked communities in terms of size are nonlocalized nation-wide communities. Although the in-dustrial proximity is generally important for the community formation, whether the geographical proximity matters depends on the type of busi-ness. Localized communities tend to be medium-sized. We also shed light on the hierarchical structure of community. We found that some of nation-wide communities are divided into several localized subcommunities.

本文言語English
ホスト出版物のタイトルCUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management
出版社CUPUM
ISBN(電子版)9780692474341
出版ステータスPublished - 2015 1 1
外部発表はい
イベント14th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2015 - Cambridge, United States
継続期間: 2015 7 72015 7 10

出版物シリーズ

名前CUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management

Other

Other14th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2015
CountryUnited States
CityCambridge
Period15/7/715/7/10

ASJC Scopus subject areas

  • Environmental Engineering
  • Geography, Planning and Development
  • Urban Studies
  • Ecology
  • Civil and Structural Engineering

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