1. OWLED 200 8 OWL: Experiences and Directions Fifth International Workshop Karlsruhe, Germany October 26-27, 2008 co-located with ISWC 2008 http://www.webont.org/owled/2008

2. Main groups of topics Logical grounding of reasoning Standardisation of OWL, possible extensions Usability, patterns… Software infrastructures Specific applications

3. Main topics Advances in reasoners for OWL –Improved tableau reasoning –Use of DB to optimise DL reasoning (Oracle, Postgress) –Abductive reasoning Features/extensions/patterns in/for OWL (2 and forth) –„Easy keys“ –Integrity constraints (how to open/close worlds…) –Datatype system for modelling quantities –Probabilistic extension (Pronto) –„May“ axioms (in medicine) –Description Graph extension (modelling „valid settings“ – vs. SysML as OMG standard) –Calculations (via annotation…) –Enrichment for ontology matching and KDD (by UEP) User side – visualisation and editing –Manchester syntax; SWRL (APIs…) –Pre-processing – pattern-based manipulation (OPPL) –ACE – use of controlled language for authoring OWL, SWRL –Narrative presentations over ontologies –Explanation of reasoning results (laconic…)

4. Main topics (cont’d) Infrastructure –Interface for accessing reasoners (OWLlink) –Versioning –Collaborative editing –Lint tool (Pellint) – removing features that increase computational complexity –Translation between different languages (based on ‘heterogeneous algebraic specification language’) Domain-specific applications –Biomedicine (whole section!) –Legal domain (OWL Judge) –Access control –Genealogy –Product design –Web portal design Panel discussion: How OWL may fail?

5. Next edition Autumn 2009 Somewhere in Virginia? Looser collocation with ISWC?