Collaboration networks in a French cluster: do partners really interact with each other?

We discuss the common hypothesis that, in collaborative projects, all partners interact with each other in homogeneous ways. More precisely, this research aims to determine the existence and frequency of Partner interactions in a collaborative project. From a survey of participants involved in innovation projects approved by a cluster, we collect information about 754 collaboration ties. We then test the impact of several determinants on the existence and frequency of their observed interactions.