Picture taken at the University of Mannheim (September 2015)

from left to right: 
Row 1: Rainer Gemulla, Heiner Stuckenschmidt, Christian Bizer, Simone Ponzetto
Row 2: Heiko Paulheim, Federico Nanni, Laura Dietz
Row 3: Jörg Schönfisch, Robert Meusel, Lydia Weiland, Michael Schuhmacher
Row 4: Christian "Manni" Meilicke, Oliver Lehmberg,  Jakob Huber, Kiril Gashteovski
Row 5: Christian Bartelt, Andre Melo, Quim Casals
Row 6: Elena Kuss, Timo Sztyler, Erman Acar
Row 7: Stefano Faralli, Camilo Thorne, Johannes Knopp, Melisachew Wudage Chekol

Not on the image: Yaser Oulabi, Dominique Ritze, Petar Ristoski, Cäcilia Zirn

Picture taken at the University of Mannheim (Februar 2014)

from left to right: 
Row 1: Heiner Stuckenschmidt, Simone Ponzetto, Arnab Dutta, Christian Bizer
Row 2: Johanna Völker, Dominque Ritze, Heiko Paulheim
Row 3: Max Schmachtenberg, Johannes Knopp, Michael Schuhmacher
Row 4: Andre Melo, Jörg Schönfisch, Oliver Lehmberg
Row 5: Daniel Fleischhacker, Lydia Weiland, Robert Meusel, Wanny Weldesus
Row 6: Kai Eckert, Cäcilia Zirn, Rim Helaoui, Sebastian Kotthoff, Christian "Manni" Meilicke, Volha Bryl
Row 7: Erman Acar, Petar Petrovski, Petar Ristoski

Research Group Data and Web Science 2013 in Dagstuhl

Chair of Artificial Intelligence 2011 in Dagstuhl