Communities in an inter-firm network and their geographical perspectives

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationCUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management
PublisherCUPUM
ISBN (Electronic)9780692474341
Publication statusPublished - 2015 Jan 1
Externally publishedYes
Event14th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2015 - Cambridge, United States
Duration: 2015 Jul 72015 Jul 10

Publication series

NameCUPUM 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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