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RE: ANN: sameas.org

From: Williams, Stuart (HP Labs, Bristol) <skw@hp.com>
Date: Tue, 9 Jun 2009 14:51:43 +0000
To: Hugh Glaser <hg@ecs.soton.ac.uk>, 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>
Message-ID: <233101CD2D78D64E8C6691E90030E5C832D1BD49B5@GVW1120EXC.americas.hpqcorp.net>
Hello Hugh,

/me catching up on some much missed reading...

Cool service. 

I saw this in you're exchanges with Richard...

> <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:

which come close to an idea that occurred to me. It's not clear whether there is any ranking to the order in which alternatives are presented. Take for example: http://southampton.rkbexplorer.com/id/person-07113 which lists (today) 64 alternatives. One of those is one that we know (out of band) that the indiviudal concerned uses to refer to themselves and perhaps ought to be deemed preferable to all the others. Ok. Knowing that from some sort of crawl would likely be a no starter although the #me or #i idiom is a bit of a clue. Maybe use counts could usefully contribute to a ranking. Such a feedback mechanism might drive toward widespread use of a dominant URI... with of course a few surviving outlyers. Systems might also adapt the URIs that they publish in the direction of such dominant URI.

OTOH... one might just say, aliases are a fact of life... things are going to have several... just live with it.

BR

Stuart
--


> -----Original Message-----
> From: public-lod-request@w3.org 
> [mailto:public-lod-request@w3.org] On Behalf Of Hugh Glaser
> Sent: 04 June 2009 23:48
> To: Richard Cyganiak
> Cc: Semantic Web; Linked Data community; Ian Millard
> Subject: Re: ANN: sameas.org
> 
> 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 Tuesday, 9 June 2009 15:04:06 UTC

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