その他 The gradual evolution of buyer-seller networks and their role in aggregate fluctuations

Hisano, Ryohei  ,  Watanabe, Tsutomu  ,  Mizuno, Takayuki  ,  Ohnishi, Takaaki  ,  Sornette, Didier

0862016-08 , UTokyo Price Project , Social ICT Research Center, Graduate School of Information Science and Technology, The University of Tokyo , Graduate School of Economics, The University of Tokyo , Information and Society Research Division, National Institute of Informatics , Department of Management, Technology and Economics, ETH Zürich, Swiss Federal Institute of Technology
内容記述
2012~2016年度科学研究費補助金[基盤研究(S)]「長期デフレの解明」(研究代表者 東京大学経済学研究科・渡辺努, 課題番号:24223003)
Buyer-seller relationships among firms can be regarded as a longitudinal network in which the connectivity pattern evolves as each firm receives productivity shocks. Based on a data set describing the evolution of buyer-seller links among 55,608 firms over a decade and structural equation modeling, we find some evidence that interfirm networks evolve reflecting a firm's local decisions to mitigate adverse effects from neighbor firms through interfirm linkage, while enjoying positive effects from them. As a result, link renewal tends to have a positive impact on the growth rates of firms. We also investigate the role of networks in aggregate fluctuations.
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http://repository.dl.itc.u-tokyo.ac.jp/dspace/bitstream/2261/60836/1/wp086.pdf

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