Dynamics in ICT cooperation networks in selected German ICT clusters.

High innovation capability is indispensable for generating economic growth in developed economies. Cooperations in the innovation process are entered into by companies for reasons of risk diversification or costs and often considered to be an efficient strategy to increase a company's knowledge basis. Regional economic literature very often believes that regional agglomeration of companies, i.e. cluster formation, will also lead to increased local networking, i.e. also to cooperations between companies or between company and research institutes in the innovation process. A social network analysis of the two German ICT regions performed with patent data was able to show that cluster formation coincides with a dynamic increase of cooperations measured by joint patent applications. However, the cooperations are characterized by integration of extra-regional companies and research institutes rather than being intraregional. [ABSTRACT FROM AUTHOR]