Mining and visualizing Research Networks using the Artefact-Actor-Network approach Wolfgang Reinhardt 1 , Adrian Wilke 1 , Matthias Moi 1 , Hendrik Drachsler 2 , and Peter Sloep 2 Abstract Virtual communities are increasingly relying on technologies and tools of the so-called Web 2.0. In the context of scientific events and topical Research Networks, researchers use Social Media as one main communication channel. This raises the question, how to monitor and analyze such Research Networks. In this chapter we argue that Artefact-Actor-Networks (AANs) serve well for modeling, storing and mining the social interactions around digital learning resources originating from various learning services. In order to deepen the model of AANs and its application to Research Networks, a relevant theoretical background as well as clues for a prototypical reference implementation are provided. This is followed by the analysis of six Research Networks and a detailed inspection of the results. Moreover, selected networks are visualized. Research Networks of the same type show similar descriptive measures while different types are not directly comparable to each other. Further, our analysis shows that narrowness of a Research Network’s subject area can be predicted using the connectedness of semantic similarity net- works. Finally conclusions are drawn and implications for future research are discussed. Key words: research networks, learning networks, research 2.0, social me- dia, social network analysis, visualization, semantic similarity, community mining University of Paderborn Department of Computer Science, Computer Science Education Group Fuerstenallee 11, 33012 Paderborn, Germany {wolle,wilke,moisun}@mail.upb.de · Open University of the Netherlands Centre for Learning Sciences and Technologies 6401 DL Heerlen, The Netherlands {firstname.lastname}@ou.nl.de 1