The seminar "Advanced Topics on Semantics" will be organized on a biweekly basis starting with March, 5 2007. The basic concept is to create a solid yet informal and flexible space in which reseachers in the field of semantic technologies are given the opportunity to regularly expose their research interests and results to the public. The research seminar is targeted at both junior and senior researchers and is open to master students of the DERI stream. It will take place throughout the whole year and is mandatory for all PhD students.