RE: DBpedia Lookup RE: Can we lower the LD entry cost please (part 1)?

and you can test the auto-complete style search at
http://lookup.dbpedia.org/autocomplete.aspx


--
Georgi Kobilarov
Freie Universität Berlin
www.georgikobilarov.com


> -----Original Message-----
> From: Georgi Kobilarov
> Sent: Saturday, February 07, 2009 4:19 PM
> To: 'Hugh Glaser'; public-lod@w3.org
> Subject: DBpedia Lookup RE: Can we lower the LD entry cost please
(part
> 1)?
> 
> > dbpedia: wanted Tim again. After clicking on a few web pages, none
of
> > which
> > seemed to provide a search facility, I resorted to my usual method:-
> > look it
> > up in wikipedia and then hack the URI and hope it works in dbpedia.
> > (Sorry to name specific sites, guys, but I needed a few examples.
> > And I am only asking for a little more, so that the fruits of your
> > amazing
> > labours can be more widely appreciated!)
> 
> oh, it was my laziness that kept me from announcing it publically yet,
> but since Hugh is complaining about the lack of URI search
> functionality in DBpedia, here it is:
> 
> http://lookup.dbpedia.org
> 
> and web service at http://lookup.dbpedia.org/api/search.asmx
> 
> KeywordSearch method is for searching full titles, PrefixSearch is for
> auto-completion style search. If you want to use that in a productive
> system (i.e. putting high load on my server), please drop me a
message.
> 
> Best,
> Georgi
> 
> --
> Georgi Kobilarov
> Freie Universität Berlin
> www.georgikobilarov.com
> 
> 
> > -----Original Message-----
> > From: public-lod-request@w3.org [mailto:public-lod-request@w3.org]
On
> > Behalf Of Hugh Glaser
> > Sent: Saturday, February 07, 2009 2:24 PM
> > To: public-lod@w3.org
> > Subject: Can we lower the LD entry cost please (part 1)?
> >
> >
> > My proposal:
> > *We should not permit any site to be a member of the Linked Data
> cloud
> > if it
> > does not provide a simple way of finding URIs from natural language
> > identifiers.*
> >
> > Rationale:
> > One aspect of our Linking Data (not to mention our Linking Open
Data)
> > world
> > is that we want people to link to our data - that is, I have
> published
> > some
> > stuff about something, with a URI, and I want people to be able to
> use
> > that
> > URI.
> >
> > So my question to you, the publisher, is: "How easy is it for me to
> > find the
> > URI your users want?"
> >
> > My experience suggests it is not always very easy.
> > What is required at the minimum, I suggest, is a text search, so
that
> > if I
> > have a (boring string version of a) name that refers in my mind to
> > something, I can hope to find an (exciting Linked Data) URI of that
> > thing.
> > I call this a projection from the Web to the Semantic Web.
> > rdfs:label or equivalent usually provides the other one.
> >
> > At the risk of being seen as critical of the amazing efforts of all
> my
> > colleagues (if not also myself), this is rarely an easy thing to do.
> >
> > Some recent experiences:
> > OpenCalais: as in my previous message on this list, I tried hard to
> > find a
> > URI for Tim, but failed.
> > dbtune: Saw a Twine message about dbtune, trundled over there, and
> > tried to
> > find a URI for a Telemann, but failed.
> > dbpedia: wanted Tim again. After clicking on a few web pages, none
of
> > which
> > seemed to provide a search facility, I resorted to my usual method:-
> > look it
> > up in wikipedia and then hack the URI and hope it works in dbpedia.
> > (Sorry to name specific sites, guys, but I needed a few examples.
> > And I am only asking for a little more, so that the fruits of your
> > amazing
> > labours can be more widely appreciated!)
> > wordnet: [2] below
> >
> > So I have access to Linked Data sites that I know (or at least
> strongly
> > suspect) have URIs I might want, but I can't find them.
> > How on earth do we expect your average punter to join this world?
> >
> > What have I missed?
> > Searching, such as Sindice: Well yes, but should I really have to go
> > off to
> > a search engine to find a dbpedia URI? And when I look up "Telemann
> > dbtune"
> > I don't get any results. And I wanted the dbtune link, not some
other
> > link.
> > Did I miss some links on web pages? Quite probably, but the basic
> > problem
> > still stands.
> > SPARQL: Well, yes. But we cannot seriously expect our users to
> > formulate a
> > SPARQL query simply to find out the dbpedia URI for Tim. What is the
> > regexp
> > I need to put in? (see below [1])
> > A foaf file: Well Tim's dbpedia URI is probably in his foaf file
> > (although
> > possibly there are none of Tim's URIs in his foaf file), if I can
> > actually
> > find the file; but for some reason I can't seem to find Telemann's
> foaf
> > file.
> >
> > If you are still doubting me, try finding a URI for Telemann in
> dbpedia
> > without using an external link, just by following stuff from the
home
> > page.
> > I managed to get a Telemann by using SPARQL without a regexp (it
> times
> > out
> > on any regexp), but unfortunately I get the asteroid.
> >
> > Again, my proposal:
> > *We should not permit any site to be a member of the Linked Data
> cloud
> > if it
> > does not provide a simple way of finding URIs from natural language
> > identifiers.*
> > Otherwise we end up in a silo, and the world passes us by.
> >
> > Very best
> > Hugh
> >
> > [And since we have to take our own medicine, I have added a "Just
> > search"
> > box right at the top level of all the rkbexplorer.com domains, such
> as
> > http://wordnet.rkbexplorer.com/ ]
> >
> >
> > [1]
> > Dbtune finding of Telemann:
> > SELECT * WHERE {?s ?p ?name .
> > FILTER regex(?name, "Telemann$") }
> >
> > I tried
> > SELECT * WHERE {?s ?p ?name .
> > FILTER regex(?name, "telemann$", "i") }
> > first, but got no results - not sure why.
> >
> > [2]
> > <rant>
> > I cannot believe just how frustrating this stuff can be when you
> really
> > try
> > to use it.
> > Because I looked at Sindice for telemann, I know that it is a word
in
> > wordnet ( http://sindice.com/search?q=Telemann reports loads of
> > http://wordnet.rkbexplorer.com/ links).
> > Great, he thinks, I can get a wordnet link from a "proper" wordnet
> > publisher
> > (ie not me).
> > Goes to
> >
>
http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpen
> > Data
> > to find wordnet.
> > The link there is dead.
> > Strips off the last bit, to get to the home princeton wordnet page,
> and
> > clicks on the browser link I find - also dead.
> > Go back and look on the
> >
>
http://esw.w3.org/topic/TaskForces/CommunityProjects/LinkingOpenData/Da
> > taSet
> > s page, and find the link to http://esw.w3.org/topic/WordNet , but
> that
> > doesn't help.
> > So finally, I do the obvious - google "wordnet rdf".
> > Of course I get lots of pages saying how available it is, and how
> > exciting
> > it is that we have it, and how it was produced; and somewhere in
> there
> > I
> > find a link: "Wordnet-RDF/RDDL Browser" at
> > www.openhealth.org/RDDL/wnbrowse
> > Almost unable to contain myself with excitement, I click on the link
> to
> > find
> > a text box, and with trembling hands I type "Telemann" and click
> > submit.
> > If I show you what I got, you can come some way to imagining my
> > devastation:
> > "Using org.apache.xerces.parsers.SAXParser
> > Exception net.sf.saxon.trans.DynamicError:
> > org.xml.sax.SAXParseException:
> > White spaces are required between publicId and systemId.
> > org.xml.sax.SAXParseException: White spaces are required between
> > publicId
> > and systemId."
> >
> > Does the emperor have any clothes at all?
> > </rant>

Received on Saturday, 7 February 2009 15:21:42 UTC