Fritsch, Michael; Titze, Mirko; Piontek, Matthias - 2018
and their relationships. We compare regional knowledge networks based on different types of data sources, namely, co …-patents, co-publications, and publicly subsidized collaborative R&D projects. Moreover, by combining these three data sources, we … based on the data sources, we address the problems of coverage and selection bias. We observe that using only one data …