Hans-Peter Kriegel is a full professor for database systems and data mining in the Department “Institute for Informatics” at the Ludwig-Maximilians-Universität München, Germany and has served as the department chair or vice chair over the last years. His research interests are in spatial and multimedia database systems, particularly in query processing, performance issues, similarity search, high-dimensional indexing as well as in knowledge discovery and data mining. Hans-Peter Kriegel has been chairman and program committee member in many international database and data mining conferences. He has published over 200 refereed conference and journal papers including several contributions in the scope of the tutorial, and he received the “SIGMOD Best Paper Award” 1997 and the “DASFAA Best Paper Award” 2006 together with members of his research team.