The slides of the presentation by Piero Bonatti on Confidentiality policies on the semantic web: Logic programming vs. Description logics are now available for Download.

Presentation abstract:

An increasing amount of information is being encoded via ontologies and knowledge representation languages of some sort. Some of these knowledge bases are encoded manually, while others are generated automatically by information extraction techniques. In order to protect the confidentiality of this information, a natural choice consists in encoding access control policies with the ontology language itself. This approach led to so-called "semantic web policies".

PieroBonatti_Dortmund111208.pdf