@techreport{GSMTechRep14, address = {Zürich, Switzerland}, author = {Machado, Guilherme Sperb and Bocek, Thomas and Filitz, Alexander and Stiller, Burkhard}, howpublished = {IFI-TechReport No. 2014.0003}, month = {may}, publisher = {Institute of Informatics (IFI) at the University of Zurich (UZH)}, title = {Design, Prototyping, and Evaluation of Methods to Measure Interactivity and Geographical Closeness of Online Social Network Users in Support of Social Recommendation Systems}, url = {http://publication.pics.mu/papers/IFI-2014.0003.pdf}, year = {2014} }