Dr. Harald Sack is Senior Researcher at the Hasso Plattner-Institute for IT-Systems Engineering (HPI) at the University of Potsdam.
After graduating in computer science at the University of the Federal Forces Munich Campus in 1990, he worked as systems/network engineer and project manager in the signal intelligence corps of the German federal forces from 1990 - 1997. In 1997 he became an associated member of the graduate program 'mathematical optimization' at the University of Trier and graduated with a PhD thesis on formal verification in 2002. From 2002-2008 he did research and teaching as a postdoc at the Friedrich-Schiller-University in Jena and since 2007 he has a visiting position at the HPI.
His areas of research include multimedia retrieval, semantic web, knowledge representations and semantic enabled retrieval. SInce 2008 he is speaker of the special interest group 'multimedia- and hypermediasystems' of the german computer science society (Gesellschaft für Informatik) and general secretary of the german IPv6 council.