Hubs and Authorities on Japanese Inter-Firm Network : Characterization of Nodes in Very Large Directed Networks(Complex Networks,Econophysics-Physical Approach to Social and Economic Phenomena-)
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概要
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Japanese inter-firm network which consists of about one million firms and four million directed links is analyzed by evaluating PageRank, and the authority and hub scores of HITS. We show scale-free degree distribution, power-law distribution of firm-size, fat-tailed distribution of growth rate, positive correlation between degree and firm-size, and similarities between degree and these scores. By comparing with randomized networks, we find that (i) the firm with large firm-size tends to have large PageRank, and small authority and hub scores, and (ii) PageRank correlates significantly with the growth rate which is hardly observed with other quantities.
- 2009-05-22
著者
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Ohnishi Takaaki
Graduate School Of Law And Politics The University Of Tokyo
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Takayasu Hideki
Sony Computer Science Laboratories
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TAKAYASU Misako
Department of Computational Intelligence and Systems Science, Interdisciplinary Graduate School of S
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Takayasu Misako
Department Of Computational Intelligence And Systems Science Interdisciplinary Graduate School Of Sc
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Takayasu Misako
Department Of Computational Intelligence & Systems Science Interdisciplinary Graduate School Of
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TAKAYASU Misako
Department of Computational Intelligence and Systems Science, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
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Ohnishi Takaaki
Graduate School of Law and Politics, The University of Tokyo
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- Hubs and Authorities on Japanese Inter-Firm Network : Characterization of Nodes in Very Large Directed Networks(Complex Networks,Econophysics-Physical Approach to Social and Economic Phenomena-)
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