# The efficiency and evolution of R&D Networks

Abstract : This work introduces a new model to investigate the efficiency and evolution of networks of firms exchanging knowledge in R&D partnerships. We first examine the efficiency of a given network structure from the point of view of maximizing total profits in the industry. We show that the efficient network structure depends on the marginal cost of collaboration. When the marginal cost is low, the complete graph is efficient. However, a high marginal cost implies that the efficient network is sparser and has a core-periphery structure. Next, we examine the evolution of the network structure when the decision on collaborating partners is decentralized. We show the existence of multiple equilibrium structures which are in general inefficient. This is due to (i) the path dependent character of the partner selection process, (ii) the presence of knowledge externalities and (iii) the presence of severance costs involved in link deletion. Finally, we study the properties of the emerging equilibrium networks and we show that they are coherent with the stylized facts on R&D networks.
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Communication dans un congrès
ISS International Conference, Jul 2008, Rio de Janeiro, Brazil. Joseph A. Schumpeter Society, pp.1-53, 2008

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https://hal-sciencespo.archives-ouvertes.fr/hal-01053618
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Soumis le : jeudi 31 juillet 2014 - 15:31:00
Dernière modification le : jeudi 11 janvier 2018 - 06:19:18
Document(s) archivé(s) le : mardi 25 novembre 2014 - 22:20:29

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• HAL Id : hal-01053618, version 1
• SCIENCESPO : 2441/9933

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Michael D König, Stefano Battiston, Mauro Napoletano, Frank Schweitzer. The efficiency and evolution of R&D Networks. ISS International Conference, Jul 2008, Rio de Janeiro, Brazil. Joseph A. Schumpeter Society, pp.1-53, 2008. 〈hal-01053618〉

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