- From: pat hayes <phayes@ai.uwf.edu>
- Date: Wed, 7 May 2003 10:40:53 -0500
- To: Brian McBride <bwm@hplb.hpl.hp.com>
- Cc: w3c-rdfcore-wg@w3.org
>At 22:26 06/05/2003 +0100, Graham Klyne wrote: > >[...] > >>>Jeremy and Peter discussed the cost of relaxing that constraint, >>>and it seems, to me, to be considerable: the details of the >>>mapping of owl-dl-abstract-syntax to RDF graphs are somewhat >>>subtle and impact many parts of the S&AS spec, especially >>>the semantic layering bits. >>>http://www.w3.org/2001/sw/WebOnt/webont-issues.html#I5.3-Semantic-Layering >> >>I'm a bit puzzled by this comment. The mapping in AS&S 4.1 >>describes how to convert OWL abstract syntax into triples. What we >>are discussing is whether an RDF parser needs to generate these >>additional triples (which are in any case entailed in any >>RDFS-interpretation). I don't see how the semantics of OWL >>abstract syntax can reasonably be dependent on the behaviour of an >>RDF parser. > >I would very much like to get this comment put to bed. > >Summarizing: > > >So I'm confused. > >Are we all agreed that the only reason to keep the rdf:type rdf:List >triples would be if webont needed them? > >DanC: the cost of updating the Owl specs to not require the extra >type triples is 'considerable'. > >PatH: It bet its not. > >Jos: we can easily add/remove them as needed, so add them when needed. > >Jeremy: we can easily add/remove them as needed. Its more aesthetic >to remove them when not. > >So:------------ > >PatH - you bet its trivial to change Owl not to need them - can you >propose specific text for the change? Wherever any part of the OWL-XX syntactic conditions currently mention triples of the form xxx rdf:type rdf:List that reference is modified to refer to triples of the form xxx rdf:first yyy or zzz rdf:rest xxx or xxx rdf:rest zzz which could all be called 'list triples of xxx' or some such phrase. A minor edit to the text, no significant change to any actual conditions. Pat -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32501 (850)291 0667 cell phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes s.pam@ai.uwf.edu for spam
Received on Wednesday, 7 May 2003 11:40:58 UTC