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
抄録
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.
The gradual evolution of buyer-seller networks and their role in aggregate fluctuations
wp086.pdf
(530.4KB)
