Department of Mediamatics, Delft University of Technology, Delft, The Netherlands. j.f.nijkamp@tudelft.nl|Department of Mediamatics, Delft University of Technology, Delft, The Netherlands. j.f.nijkamp@tudelft.nl|Department of Mediamatics, Delft University of Technology, Delft, The Netherlands. j.f.nijkamp@tudelft.nl|Department of Mediamatics, Delft University of Technology, Delft, The Netherlands. j.f.nijkamp@tudelft.nl|Department of Mediamatics, Delft University of Technology, Delft, The Netherlands. j.f.nijkamp@tudelft.nl|Department of Mediamatics, Delft University of Technology, Delft, The Netherlands. j.f.nijkamp@tudelft.nl