TY - GEN
T1 - Communities in an inter-firm network and their geographical perspectives
AU - Sakuramachi, Ritsu
AU - Fujiwara, Naoya
AU - Fujishima, Shota
AU - Akiyama, Yuki
AU - Shibasaki, Ryosuke
PY - 2015/1/1
Y1 - 2015/1/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85026346237
T3 - CUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management
BT - CUPUM 2015 - 14th International Conference on Computers in Urban Planning and Urban Management
PB - CUPUM
T2 - 14th International Conference on Computers in Urban Planning and Urban Management, CUPUM 2015
Y2 - 7 July 2015 through 10 July 2015
ER -