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Parameter estimation is one of the central issues in neural spatial interaction modelling. Current practice is dominated by gradient based local minimization techniques. They find local minima efficiently and work best in unimodal minimization problems, but can get trapped in multimodal...
Persistent link: https://www.econbiz.de/10005612797
We apply a Bayesian hierarchical Poisson spatial interaction model to the paper trail left by patent citations between high-technology patents in Europe to identify and measure spatial separation effects of interregional knowledge flows. The model introduced here is novel in that it allows for...
Persistent link: https://www.econbiz.de/10005266741
The focus of this paper is on pre-competitive R&D cooperation across Europe, as captured by R&D joint ventures funded by the European Commission in the time period 2002-2006, within the 5th Framework Program. The cooperations in this Framework Program give rise to a collaborative network, with...
Persistent link: https://www.econbiz.de/10010559070
Persistent link: https://www.econbiz.de/10008322835
Persistent link: https://www.econbiz.de/10010086760
In this paper a novel modular product unit neural network architecture is presented to model singly constrained spatial interaction flows. The efficacy of the model approach is demonstrated for the origin constrained case of spatial interaction using Austrian interregional telecommunication...
Persistent link: https://www.econbiz.de/10005139650
Persistent link: https://www.econbiz.de/10004909934
In the recent past, regional, national and supranational Science, Innovation and Technology (STI) policies have emphasized supporting interactions and networks between organisations of the innovation system. The policy instrument of the EU in this context are the European Framework Programmes...
Persistent link: https://www.econbiz.de/10011132100
The focus of this study is on regional knowledge production activities in Europe, with special emphasis on the interplay between agglomeration and network effects. As increasingly considered in economic geography and regional science in the recent past, regional knowledge production activities,...
Persistent link: https://www.econbiz.de/10011132122
The focus of this study is on integration processes in European R&D by analyzing the spatio-temporal dimension of three different R&D collaboration networks across Europe. These networks cover different types of knowledge creation, namely co-patent networks, project based R&D networks within the...
Persistent link: https://www.econbiz.de/10011132131