Communities in an inter-firm network and their geographical perspectives

  title={Communities in an inter-firm network and their geographical perspectives},
  author={Ritsu Sakuramachi and Naoya Fujiwara and Shota Fujishima and Yuki Akiyama and Ryosuke Shibasaki},
  journal={The American Journal of Gastroenterology},
We detect communities, or groups of firms having mutually close business relationship, in a huge inter-firm transaction network and study their geographical 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… 

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