Joint Committee Update

DAML PI Meeting
St. Petersburg, FL
12 February 2002

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Outline

Joint Committee
- developers and keepers of the DAML+OIL language
- composed of representatives of the US (DAML) and European Union Semantic Web efforts
DAML+OIL has been stable since March 2001
at the last DAML PI Meeting, 2 language priorities were identified
- rules
- query

DAML+OIL was submitted to W3C, allowing it to be used as the starting point for the Web Ontology (WebOnt) WG.
thanks to Peter Patel-Schneider and Lucent for their significant efforts in making this happen

RDF Core WG
- chartered to complete RDF Schema and address issues identified by users of RDF (including the DAML+OIL community)
- key results
  - development of a large body of RDF Test Cases using the N-triples language
  - development of an RDF Model Theory (led by Pat Hayes)
  - adding datatypes to RDF (in final discusssion)
  - development of an RDF Primer (in progress)
the Joint Committee encouraged RDF Core to allow both implicit and explict (global and local) data typing as in DAML+OIL
considerable effort has gone into reconciling the Model Theories of RDF(S) and DAML+OIL/OWL, and to characterizing the layering of Semantic Web languages
the Joint Committee will continue to address issues beyond the scope of WebOnt

Dagstuhl Seminar on Rule Markup Techniques for the Semantic Web was held last week in Germany
- Ian Horrocks reported on some of his work with Benjamin Grosof to unify Description Logic and Logic Programming
- may be a catalyst for renewed DAML Rules work
until DAML Rules, DAML+OIL can be used quite effectively with RuleML or native rule representations
- users are encouraged to report their experiences as use cases and requirements for DAML Rules
[email protected] email list created as a result of last PI Meeting

Richard Fikes will report on the Joint Committee proposal for a DAML Query Language (DQL)