- From: Antoine Zimmermann <antoine.zimmermann@emse.fr>
- Date: Tue, 20 Dec 2011 14:34:06 +0100
- To: Pat Hayes <phayes@ihmc.us>
- CC: Richard Cyganiak <richard@cyganiak.de>, public-rdf-wg@w3.org
Le 20/12/2011 04:52, Pat Hayes a écrit : > > On Dec 19, 2011, at 1:50 PM, Richard Cyganiak wrote: > >> On 19 Dec 2011, at 10:48, Pat Hayes wrote: >>> I would like to see some evidence, from actual use cases, of how it can be that different RDF graphs hold in different contexts, >> >> See here for some (toy) examples: >> http://lists.w3.org/Archives/Public/public-rdf-wg/2011Oct/0212.html > > For comments on that, see my reply > http://lists.w3.org/Archives/Public/public-rdf-wg/2011Oct/0228.html > >> A list of use cases provided by WG members is on the wiki: >> http://www.w3.org/2011/rdf-wg/wiki/TF-Graphs-UC > > After a quick survey, I dont see anything in this list which suggests that a context can or should be thought of as changing the meaning of an IRI. The meaning of an IRI is constrained by the triples in the graph in which it occurs. Go online, and look at what you find: http://www.emse.fr/~zimmermann/data4pat1.rdf This URL leads to a document where the IRI <http://www.ihmc.us/groups/phayes/> denotes the number 1. Now, go to: http://www.emse.fr/~zimmermann/data4pat1.rdf In this document, the same IRI denotes number 2. Eventually, a web crawler will index these two documents and without context, it won't do anything useful. Then go get: http://www.emse.fr/~zimmermann/data4pat.rdf Now, this document says that all IRIs denote the same thing. As, according to you, this thing is independent of the context, we can stop making reasoners :) AZ > >> >> Many of the use cases ask for context information about RDF graphs in order to decide wether to accept a graph as true. > > Yes, quite. But not to change the meaning of the graph or of the IRIs in the graph. > > Am I missing something? > > Pat > > > ------------------------------------------------------------ > IHMC (850)434 8903 or (650)494 3973 > 40 South Alcaniz St. (850)202 4416 office > Pensacola (850)202 4440 fax > FL 32502 (850)291 0667 mobile > phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes > > > > > > -- Antoine Zimmermann ISCOD / LSTI - Institut Henri Fayol École Nationale Supérieure des Mines de Saint-Étienne 158 cours Fauriel 42023 Saint-Étienne Cedex 2 France Tél:+33(0)4 77 42 83 36 Fax:+33(0)4 77 42 66 66 http://zimmer.aprilfoolsreview.com/
Received on Tuesday, 20 December 2011 13:34:15 UTC