Abstract
One of the challenges of innovative clusters relies on their ability to overlap technological domains in order to maintain their growth path along the cycle of technological markets. The paper studies two particular structural properties of collaboration networks that provide new insights for understanding this overlapping process. On the one hand, the degree distribution of knowledge networks captures the level of hierarchy within networks. It gives a first measure of the ability of networked organisations to coordinate their actions. On the other hand, the degree correlation captures the level of assortativity of networks. It gives a measure of the ability of knowledge to flow between highly and poorly connected organisations. We propose to combine these simple statistical measures of network structuring in order to study the parameters window that allow localized knowledge networks combining technological lock-in with regional lock-out.
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Notes
- 1.
Another traditional representation consists in mapping degree distribution using frequencies of degree values.
- 2.
Then we only focus on the structuring of the network. Entries are considered as exogenous, or occurring in previous periods.
- 3.
If two nodes have the same degree, we arbitrarily rank them as long as it has no incidence on the slope on the power law.
- 4.
In such a way that the density remains the same for the three networks 2t/n(n − 1) = 0.1212, where t is the number of actual links and n the number of nodes).
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Crespo, J., Suire, R., Vicente, J. (2013). Assortativity and Hierarchy in Localized R&D Collaboration Networks. In: Scherngell, T. (eds) The Geography of Networks and R&D Collaborations. Advances in Spatial Science. Springer, Cham. https://doi.org/10.1007/978-3-319-02699-2_7
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