- From: Laskey, Ken <klaskey@mitre.org>
- Date: Tue, 22 Apr 2008 19:14:51 -0400
- To: <public-xg-urw3@w3.org>
- Message-ID: <271B02EECC152249BBE7399C5DF75B7701C9680D@IMCSRV2.MITRE.ORG>
Dear URW3 alumni, I am writing to you from Beijing where I am attending W3C meetings and the WWW conference. I had a chance to talk with Ivan Herman, the W3C Semantic Web lead, and Christian de Sainte Marie, the chair of the RIF working group, about the work of the URW3 XG. From very brief discussions, it appears that our conclusions about the need to specify uncertainty reasoning information should be supported by the RIF logic framework and provide a means to include uncertainty information as annotations. The RIF group just published a set of working drafts that would form the basis for these annotations. The announcement of the drafts is currently listed under the center news section of the W3C home page, but for convenience I am also including it below. Three RIF Working Drafts Published 2008-04-15: The Rule Interchange Format (RIF) Working Group <http://www.w3.org/2005/rules/wg.html> (http://www.w3.org/2005/rules/wg.html) published three drafts today: * RIF Basic Logic Dialect (RIF-BLD) <http://www.w3.org/TR/2008/WD-rif-bld-20080415/> (http://www.w3.org/TR/2008/WD-rif-bld-20080415/) * RIF Framework for Logic Dialects (RIF-FLD) <http://www.w3.org/TR/2008/WD-rif-fld-20080415/> (http://www.w3.org/TR/2008/WD-rif-fld-20080415/) * RIF RDF and OWL Compatibility (RIF-RDF-OWL) <http://www.w3.org/TR/2008/WD-rif-rdf-owl-20080415/> (http://www.w3.org/TR/2008/WD-rif-rdf-owl-20080415/) These drafts help solidify the "pure logic rules" branch of RIF, which is distinct from the "production rules" branch (on which a Working Draft is expected within the next 6 months). Both branches share "RIF Core" (also expected within the next 6 months). The Framework document (FLD) specifies how the various logic dialects relate, while the Basic Logic Dialect (BLD) provides an interlingua for rule languages providing approximately "Horn" expressivity. The third document specifies how BLD can be logically combined with RDF and OWL. The URW3 recommendations identify the need and support for - a standard representation ... to unambiguously identify the formalism ... for assigning other uncertainty characteristics and values - defining different standard properties for each formalism - adjunct specification(s) ... for the most commonly used uncertainty formalisms I am interested to see the thoughts of URW3 participants on how well the RIF work would support the URW3 recommendations. This is also be an excellent time to make those thoughts known to the RIF group. Ken
Received on Tuesday, 22 April 2008 23:15:32 UTC