Topology and Evolution of Technology Innovation Networks

Details Topology and Evolution of Technology Innovation Networks Topology and Evolution of Technology Innovation Networks

2006-12-04

arxiv.org/abs/physics/0612030v1

Physics

Physics and Society

6 pages, 5 figures, submitted to Physical Review E

Scientific paper

10.1103/PhysRevE.76.056118

The web of relations linking technological innovation can be fairly described in terms of patent citations. The resulting patent citation network provides a picture of the large-scale organization of innovations and its time evolution. Here we study the patterns of change of patents registered by the US Patent and Trademark Office (USPTO). We show that the scaling behavior exhibited by this network is consistent with a preferential attachment mechanism together with a Weibull-shaped aging term. Such attachment kernel is shared by scientific citation networks, thus indicating an universal type of mechanism linking ideas and designs and their evolution. The implications for evolutionary theory of innovation are discussed.

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