Marcel Karnstedt was born in 1977 in Halle (Saale), Germany. He received his Diploma (M.Sc.) from the Martin-Luther-Universität Halle-Wittenberg, Germany, at the end of 2003. From January 2004 to February 2009 he worked as a research associate and teaching assistant with the Databases & Information Systems Group (head: Prof. Dr.-Ing. habil. Kai-Uwe Sattler) at the Ilmenau University of Technology, Germany. That is where he also successfully completed his Ph.D. (summa cum laude). Since March 2009 he has been affiliated with the Digital Enterprise Research Institute (DERI), National University of Ireland, Galway (NUIG). He is member of the Unit for Information Mining and Retrieval (UIMR) and started as a Postdoctoral Researcher in the CLIQUE project on analyzing and visualizing large graphs and networks, specifically social networks and biological networks. Since December 2009 he also holds an adjunct lectureship at NUIG. Starting with November 2010, he has been employed as a Senior Postdoc and is currently responsible for DERI's part of the ROBUST project, an EU-funded international project focusing on risks and opportunities in huge-scale business communities. Further, he contributes to the tasks of query processing and sensor mining in the SPITFIRE project, which aims at combining the "Internet of Things" with the "Web of Things".