- From: Hugh Glaser <hg@ecs.soton.ac.uk>
- Date: Thu, 4 Jun 2009 23:47:51 +0100
- To: Richard Cyganiak <richard@cyganiak.de>
- CC: Semantic Web <semantic-web@w3.org>, Linked Data community <public-lod@w3.org>, Ian Millard <icm@ecs.soton.ac.uk>
Hi Richard, Here goes... On 04/06/2009 00:54, "Richard Cyganiak" <richard@cyganiak.de> wrote: > Hugh, Ian, > > Great work -- simple, visually attractive, does what it says on the > tin. A pleasure to use. > > Question: What can you say about the provenance of the sameAs data? > The about page doesn't reveal much about this. This is sort of > important to know before we can decide where and how to use the > service -- anything that helps me judging the quality of the data > would be useful. Is it hand-curated, does it contain wild triples from > the Web, can it be spammed etc. I have added some stuff on the about page which may go some way towards answering your question. > > Comments about the RDF output. > > The general RDF graph has the shape > <U1> owl:sameAs <U1>, <U2>, <U3>, <U4> . > > I think it would be pretty cool to make it > <#this> owl:sameAs <U1>, <U2>, <U3>, <U4> . > > That way, I could add a nice triple to my FOAF file: > > <#cygri> owl:sameAs > > <http://sameas.org/rdf?uri=http://richard.cyganiak.de/foaf.rdf%23cygri#this >> . > > (Okay, I like this mostly because of the recursive cleverness of the > idea. In reality, an rdfs:seeAlso would probably do just fine. But > isn't owl:sameAs sooo much sexier?) Ian quite liked the idea, but as you know anything that smacks of generating a new URI for the existing ones makes me uncomfortable, to say the least. So he is pondering, and it is possible he will do it, but I don't think anyt time soon. > > I think the RDF output could do with some extra triples. First, a > meaningful dc:title for the document URI would be quite nice: > > <http://sameas.org/rdf?uri=http://richard.cyganiak.de/foaf.rdf%23cygri >> > dc:title "Co-references from sameAs.org for foaf.rdf#cygri" . Seems good, goes on the list. > > Then, a foaf:primaryTopic triple would make several tools (most of all > Tabulator) very happy: > > <http://sameas.org/rdf?uri=http://richard.cyganiak.de/foaf.rdf%23cygri >> > foaf:primaryTopic <http://richard.cyganiak.de/foaf.rdf#cygri> . Probably good as well. > > Furthermore, what about dc:license? Added some words in the about - any advice as to what the licence might be? I guess there is some cc licence that corresponds to: "The information is provided as-is and without any warranty. It is freely available for any use as you wish." > > In the case of /rdf?q=xxx, some nod in the direction of Sindice, e.g. > via dc:source pointing to the Sindice RDF result, would be nice. Good idea - will look at it. > > You might want to put a higher-resolution logo graphic somewhere, so > that people who use your service can display it, similar to how you > use the Sindice logo. The logo was the last thing we did, and I announced before Ian had finished - I do get enthusiastic, and the workers have to pay :-) > > Again, thanks for this service. Pleasure - prefix.cc provided some inspiration. And many thanks for the thoughtful comments. Hugh > > Richard > > > > On 3 Jun 2009, at 20:48, Hugh Glaser wrote: > >> We are pleased to offer http://sameas.org/ as a service to provide >> you with >> help finding URIs. >> >> It sort of does what it says:- if you provide a URI, it will give >> you back >> URIs that may well be co-referent, should any be known to it. >> In addition, by using sindice.com, if you give it a string, it will >> provide >> bundles of URIs that correspond to looking up the string at Sindice >> and >> processing them at <sameas>. >> >> Apart from the obvious use of the service through the web-form, >> simple URIs >> can be provided to do lookups: >> http://sameas.org/?uri=http://dbpedia.org/resource/London >> http://sameas.org/?q=London >> The following formats are also supported: >> rdf+xml, text/n3, application/json, text/plain >> both through content negotiation and also as a specific URI. >> For example: >> http://sameas.org/rdf?uri=http://dbpedia.org/resource/London >> http://sameas.org/n3?uri=http://dbpedia.org/resource/London >> http://sameas.org/html?uri=http://dbpedia.org/resource/London >> http://sameas.org/json?uri=http://dbpedia.org/resource/London >> http://sameas.org/text?uri=http://dbpedia.org/resource/London >> >> We believe that the Semantic Web and Linked Data need to develop >> clear, >> focussed, services that only do one or two things, so that they can be >> composed and utilised by the more complex services, as well as >> facilitating >> re-use. >> We hope that <sameas> fits into that category, and that Linked Data >> application builders will find it an appropriate and useful service >> for the >> important task of discovering co-referent URIs. >> In addition, by providing formats oriented towards non-Linked Data >> application, we hope that the use of Linked Data can be spread even >> wider. >> >> We currently have about 18M URIs, with an average of 3 URIs per >> bundle. >> >> Best >> >> Ian Millard and Hugh Glaser >> >> >> -- >> Hugh Glaser, Reader >> Dependable Systems & Software Engineering >> School of Electronics and Computer Science, >> University of Southampton, >> Southampton SO17 1BJ >> Work: +44 (0)23 8059 3670, Fax: +44 (0)23 8059 3045 >> Mobile: +44 (0)75 9533 4155, Home: +44 (0)23 8061 5652 >> http://www.ecs.soton.ac.uk/people/hg >> >> "If we have a correct theory but merely prate about it, pigeonhole >> it, and >> do not put it into practice, then the theory, however good, is of no >> significance." >> >> > >
Received on Thursday, 4 June 2009 22:48:39 UTC