The paper identifies 5 stylized facts to characterize the geographic distribution of innovative activities in France (mainly its high concentration in the region Ile-de-France). It proposes an original model of regional growth in a knowledge-based economy considering the density of RD activities...

The paper investigate the effects of knowledge on economic growth at the regional level Methodology approach: We elaborate a view on knowledge as the result of a combinatorial search activity and implement indicators synthesizing the network architecture of knowledge structure Findings:...

This paper elaborates a view on knowledge as a result of a combinatorial search activity, so as to investigate its effects on economic growth at the regional level. Empirical estimations corroborate the hypothesis that knowledge coherence and variety, besides the traditional measure of knowledge...