- From: Kingsley Idehen <kidehen@openlinksw.com>
- Date: Mon, 26 Mar 2012 09:01:32 -0400
- To: www-tag@w3.org, David Booth <david@dbooth.org>
- Message-ID: <4F7068AC.7030304@openlinksw.com>
On 3/26/12 3:48 AM, トーレ エリクソン wrote: > Hi David, > > Although we differ on the point of Information Resources (surprise, > surprise), I think your proposal is quite similar to mine. I'd like you > to clarify one difference though. In section 3.23 you require > > @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . > <http://example/toucan> rdfs:isDefinedBy <http://example/toucan> . > > Why can't the representation be a URI definition even without this > statement? It seems to me that it being served as a 200 should be enough > to be sure of its validity. > > Regards, > Tore Eriksson > > (Sorry, resending since I forgot to cc the list) > _______________________________________________________________ > _:this dc:creator [ > foaf:name "Tore Eriksson", > "トーレ エリクソン"@jp; > foaf:mbox_sha1sum "2bd9291b301f112775e118f96eb63314594b1a86"; > foaf:workplaceHomepage <http://www.taisho.co.jp/> ]. > > > > David, @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <http://example/toucan> rdfs:isDefinedBy <http://example/toucan> . Should be: @prefix wdrs: <http://www.w3.org/2007/05/powder-s#> . <http://example/toucan> wdrs:describedby <http://example/toucan> . Even more so if we are going to have HTTP servers dispatching the following relation to user agents, via response metadata: Link: <http://example.com/uri-documentation>; rel="describedby" And for additional bonus points, re. many Web developers that operate at the (X)HTML resource level, you have the same relation expressed in <link/> relations in <head/>. Links: 1. http://tools.ietf.org/html/rfc5988 -- Web Linking . * Snippet and examples from my earlier reply to David Wood * There is an inverse of rdfs:isDefinedBy [1]. Here's some easy to read SPASQL (SPARQL + SQL) showcasing the use of rdfs:isDefinedBy, wdrs:describedby etc.. INSERT INTO <http://www.semanticdesktop.org/ontologies/2007/03/22/nco/> {?s rdfs:isDefinedBy <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#> . <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#> <http://open.vocab.org/terms/defines> ?s. <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#> a owl:Ontology . ?s <http://www.w3.org/2007/05/powder-s#describedby> <http://www.semanticdesktop.org/ontologies/2007/03/22/nco/>} FROM <http://www.semanticdesktop.org/ontologies/2007/03/22/nco/> WHERE { optional {?s rdfs:subClassOf ?o}. optional {?s rdfs:subPropertyOf ?o}. optional {?s owl:equivalentClass ?o}. optional {?s owl:equivalentProperty ?o}. optional {?s a ?o}} . Links: 1. http://open.vocab.org/docs/defines 2. http://uriburner.com/describe/?url=http%3A%2F%2Fwww.semanticdesktop.org%2Fontologies%2F2007%2F03%2F22%2Fnco%23 -- net effect of the SPASQL above i.e., a readable document that describes a specific ontology 3. http://uriburner.com/describe/?url=http%3A%2F%2Fwww.semanticdesktop.org%2Fontologies%2F2007%2F03%2F22%2Fnco%23Contact -- a specific snippet. Note re. sample pages 1&2, click on the @href of the "About:.." text and you end up in the data space from which the URI in question originates. -- Regards, Kingsley Idehen Founder & CEO OpenLink Software Company Web: http://www.openlinksw.com Personal Weblog: http://www.openlinksw.com/blog/~kidehen Twitter/Identi.ca handle: @kidehen Google+ Profile: https://plus.google.com/112399767740508618350/about LinkedIn Profile: http://www.linkedin.com/in/kidehen
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Received on Monday, 26 March 2012 13:01:54 UTC