- From: Tim Berners-Lee <timbl@w3.org>
- Date: Wed, 25 Jul 2007 09:44:54 -0400
- To: Dan Connolly <connolly@w3.org>
- Cc: Chris Bizer <chris@bizer.de>, www-tag@w3.org, semantic-web@w3.org, Linking Open Data <linking-open-data@simile.mit.edu>
Ooops ... I missed this ...you said exactly what I wanted to say. Tim On 2007-07 -10, at 13:08, Dan Connolly wrote: > > On Sat, 2007-07-07 at 14:43 +0200, Chris Bizer wrote: >> Hi all, >> >> Richard Cyganiak, Tom Heath and me are currently writing a >> tutorial on how >> to publish Linked Data [1] on the Web and ran into some terminology >> questions concerning Web Architecture. >> >> Here is the problem statement together with an example: Within the >> Linking >> Open Data community project [2] different data sources (URI >> owners) publish >> information about Tim Berners-Lee using different HTTP URIs: >> >> 1. DBpedia: http://dbpedia.org/resource/Tim_Berners-Lee >> 2. Hannover DBLP Server: >> http://dblp.l3s.de/d2r/resource/authors/Tim_Berners-Lee >> 3. Berlin DBLP Server: >> http://www4.wiwiss.fu-berlin.de/dblp/resource/person/100007 >> 4. RDF Book Mashup: >> http://www4.wiwiss.fu-berlin.de/bookmashup/persons/Tim+Berners-Lee >> >> The first 3 data sources follow the W3C TAG "Dereferencing HTTP URIs" >> finding [3] > > draft, in progress... > >> and redirect via HTTP 303 to documents describing Tim >> Berners-Lee when the URIs are dereferenced over the Web. >> Therefore, the URIs >> identify Tim Berners-Lee as a non-information resource. > > Rather: therefore the do not claim that these URIs > identify information resources. > > The lack of a claim is very different from the negation of a claim. > >> This redirect also >> supports HTTP content negotiation and leads to HTML as well as RDF >> descriptions of Tim. >> >> 5. Tim also publishes a FOAF profile in which he assigns the URI >> http://www.w3.org/People/Berners-Lee/card#i to himself. >> >> Question 1: According to the terminology of the Architecture of >> the WWW >> document [4] are all these URIs aliases for the same non-information >> resource (our current view) or are they referring to different >> resources? > > They are aliases: the URI owners say so and nothing in webarch > says otherwise. > >> Does the TAG finding "On Linking Alternative Representations To >> Enable >> Discovery And Publishing " [5] about generic and specific >> resources apply >> here, meaning that the URIs 1,2,3,5 refer to different specific >> non-information resources that are related to one generic non- >> information >> resource? > > No, I don't think so. > > The generic resource finding is mostly about information resources, I > think. > >> Question 2: When the URIs are dreferenced they provide quite >> different >> information about Tim, which reflects the knowledge and the >> opinion of the >> specific URI owner about him. Within our tutorial we need to talk >> about this >> information and therefore need a term to refer to a concept that >> can be >> described as "information provided by a specific URI owner about a >> non-information resource", for example Tim. Depending on the >> answer to >> question 1, what would be the correct Web Architecture term to >> refer to this >> concept? Or is such a term missing? > > I don't think the TAG has established a term for that. > > (It sounds a bit like log:semantics from N3, but I'm not quite sure > http://www.w3.org/2000/10/swap/doc/Reach ) > >> Question 3: Depending on the answer to question 1, is it correct >> to use >> owl:sameAs [6] to state that http://www.w3.org/People/Berners-Lee/ >> card#i and >> http://dbpedia.org/resource/Tim_Berners-Lee refer to the same >> thing as it is >> done in Tim's profile. > > Yes... > > That's sort of a circular question. It's correct because Tim says > it's correct, and he owns that name. > >> Any clarifications on these question would be highly welcomed. >> >> Cheers >> >> Chris >> >> >> [1] http://www.w3.org/DesignIssues/LinkedData.html >> [2] >> http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/ >> LinkingOpenData >> [3] http://www.w3.org/2001/tag/doc/httpRange-14/2007-05-31/ >> HttpRange-14 >> [4] http://www.w3.org/TR/webarch/ >> [5] http://www.w3.org/2001/tag/doc/alternatives-discovery.html >> [6] http://www.w3.org/TR/owl-ref/#sameAs-def >> >> -- >> Chris Bizer >> Freie Universität Berlin >> +49 30 838 54057 >> chris@bizer.de >> www.bizer.de >> > -- > Dan Connolly, W3C http://www.w3.org/People/Connolly/ > >
Received on Wednesday, 25 July 2007 13:45:08 UTC