The 5th meeting of the OntoWeb SIG on Ontology Language Standards
was devoted to a Workshop on OWL Implementation Experiences.
OWL has now achieved W3C Candidate Recommendation status (see
http://www.w3.org/2003/08/owl-pressrelease.html.en), and the
language is stable enough for implementors to invest serious effort.
In fact, a number of tools have already been constructed: reasoners,
parsers, validators, editors, and API's (see, e.g., the implementation
report at http://www.w3.org/2001/sw/WebOnt/impls).
The goal of the meeting was both to learn about individual tool
implementations, and to share experiences on what is easy and what is
hard in realising such OWL implementations. For example:
- does the layering in Lite, DL and Full help or hurt
- experiences with OWL's RDF and XML syntax
- does the abstract syntax help or hurt
- experiences in migrating from DAML+OIL or other ontology languages
- experiences with leveraging other tools (e.g. RDF parsers)
- experiences with scalability
Contributions were sollicited on both finished and on-going
implementation efforts.
The agenda for the meeting was as follows:
- 9:30-10:00
- Welcome, round of introductions
- 10:00-10:30
- Holger Knublauch, Stanford
OWL Plugin for Protege
- 10:30-11:00
- Coffee break
- 11:00-11:30
- Peter F. Patel-Schneider, Bell labs
OWLP OWL parser and processor
- 11:30-12:00
- Sean Bechhofer, Manchester
OWL Species validator
- 12:00-12:15
- Jeen Broekstra, Aduna (formerly AIdministrator)
Sesame rule-based implementation of OWL Lite (ongoing)
- 12:30-14:00
- Lunch break
- 14:00-14:30
- Jeremy Carroll, HP Labs
OWL Full reasoning
- 14:30-15:00
- Jeremy Carroll, HP Labs
OWL Syntax Checker
- 15:00-15:30
- Bijan Parsia, Maryland
Pellet Reasoner
- 15:30-16:00
- Coffee break
- 16:00-16:30
- Jens Hartmann, Karlsruhe
- 16:30-17:00
- Tim Finin, Maryland
FOWL, OWL reasoner
One outcome of this very successful meeting was a decision to maintain
a list of OWL implementation resources on the SIG web site. This can
be found at
http://www.cs.man.ac.uk/~horrocks/OntoWeb/SIG/node3.html.
Ian Horrocks
2003-10-28