2003-01-09

http://www.agfa.com/w3c/Talks/2003/01webont/Overview.html

by Jos De Roo
of AGFA

- Euler Proof Mechanism is a research component to support logic based proofs
- using Prolog unification (substitutions, unifiers) & resolution algorithm & backtracking
- plus Euler path detection to avoid endless deductions
- using as much as possible from DanC's and TimBL's SWAP
- implemented in Java and also in C#
- making use of Jena2 in RDF/XML to N3 triples generation
- small footprint (engine is 28 Kbyte jar file) and have achieved > .5 Msteps/sec

- for RDFS http://www.agfa.com/w3c/euler/rdfs-rules
- for XSD http://www.agfa.com/w3c/euler/xsd-rules
- for OWL http://www.agfa.com/w3c/euler/owl-rules
- ...

- bundled in etc5
- 106 tests (including the 71 OWL tests)
- 802 documents are loaded from 4 sites (W3C, ILRT, RPI, AGFA)
- 116 engines involved and taking 1.2 Msteps
- 8 testcases with "no proof found"
- results in etc5-proof
# Conclusions

- first support simple and then more complex systems
- OWL enables optimal reuse of data in networked environment
- will try that next for LLDM testcase

Thanks!