Directional Bias between Communities of a Production Network in Japan

  • Takashi Iino
  • Hiroshi Iyetomi
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 16)


We investigate a production network constructed by about 800 thousand firms in Japan with focus on its transaction flow between communities. Communities detected by maximizing modularity often contain nodes with common properties such as characterized by regions or industry sectors. Communities may thus upstream-downstream relationship according to their characteristics. Such directional bias of the connections between communities is evaluated through a polarization matrix of the network direction. We also devise a visualization method for directed network based on physical model. We attempt to draw a map of Japanese transaction flow in viewpoint of community structure.


Large Community Industry Sector Production Network Subset Versus Directional Bias 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Faculty of ScienceNiigata UniversityIkarashiJapan

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