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Knowledge Spillover on Complex Networks

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  • KONNO Tomohiko

Abstract

Most growth theories have focused on R&D activities. Although R&D significantly influences economic growth, the spillover effect also has a considerable influence. In this paper, we study knowledge spillover among agents by representing it as network structures. The objective of this study is to construct a framework to treat knowledge spillover as a network. We introduce a knowledge spillover equation, solve it analytically to find a workable solution. It has mainly three properties: (1) the growth rate is common for all the agents only if they are linked to the entire network regardless of degrees, (2) the TFP level is proportional to degree, and (3) the growth rate is determined by the underlying network structure. We compare growth rate among representative networks: regular, random, and scale-free networks, and find the growth rate is the greatest in scale-free network. We apply this framework, i.e., knowledge spill over equation, to the problem of firms forming a network endogenously and show how distance and region size affect the economic growth. We also apply the framework to network formation mechanism. The aim of our paper is not just showing results, but in constructing a framework to study spillover by network.

Suggested Citation

  • KONNO Tomohiko, 2010. "Knowledge Spillover on Complex Networks," Discussion papers 10002, Research Institute of Economy, Trade and Industry (RIETI).
  • Handle: RePEc:eti:dpaper:10002
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    File URL: https://www.rieti.go.jp/jp/publications/dp/10e002.pdf
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    References listed on IDEAS

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    5. Gregory Corcos & Massimo Del Gatto & Giordano Mion & Gianmarco I.P. Ottaviano, 2012. "Productivity and Firm Selection: Quantifying the ‘New’ Gains from Trade," Economic Journal, Royal Economic Society, vol. 122(561), pages 754-798, June.
    6. Ciccone, Antonio & Hall, Robert E, 1996. "Productivity and the Density of Economic Activity," American Economic Review, American Economic Association, pages 54-70.
    7. Marc J. Melitz, 2003. "The Impact of Trade on Intra-Industry Reallocations and Aggregate Industry Productivity," Econometrica, Econometric Society, vol. 71(6), pages 1695-1725, November.
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