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The Dynamics of R&D Network in the IT Industry

  • Nobuyuki Hanaki
  • Ryo Nakajima
  • Yoshiaki Ogura

In this paper, we provide an empirical analysis of evolving networks of successful R&D collaborations in the IT industry (consisting of firms that obtained patents in the technological category of computers and communication) in the U.S. between 1985 and 1995. We first show that the R&D network has become more extensive, more clustered, and more unequal in the sense that 'stars' have emerged in the network. We then analyze the effect of the existing network structure in the process of new R&D collaboration formation. We control for unobserved similarities among firms based on the community structures within the network that the algorithm developed by Girvan and Newman (2004) identifies and find a significant cyclic closure and preferential attachment effect.

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File URL: http://www.econ.tsukuba.ac.jp/RePEc/2009-014.pdf
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Paper provided by Economics, Graduate School of Humanities and Social Sciences, University of Tsukuba in its series Tsukuba Economics Working Papers with number 2009-014.

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Date of creation: Aug 2009
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Handle: RePEc:tsu:tewpjp:2009-014
Contact details of provider: Postal: 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571
Web page: http://www.econ.tsukuba.ac.jp/

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