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Re: Using Linking Open Data datasets

From: Jun Zhao <jun.zhao@zoo.ox.ac.uk>
Date: Thu, 29 May 2008 18:21:49 +0100
Message-ID: <483EE62D.5020001@zoo.ox.ac.uk>
To: "Hausenblas, Michael" <michael.hausenblas@joanneum.at>
CC: public-lod@w3.org
Hello Michael,

Hausenblas, Michael wrote:
> Dear LODers,
> One thing we encounter recurrently when using the LOD datasets is where
> to 'start best'. I'm unsure how to handle this situation, so I tried to
> gather some issues along with a simple proposal how to deal with it
> (called MetaLOD) at [1]. The idea basically is to develop a vocabulary
> and gather information 'about' the LOD datasets, such as 'at Geonames
> you get location-based information', etc.
This looks very interesting. And I desperately share your needs, i.e. 
looking for the data to link to.

I am also thinking about rdfs:seeAlso, and something like skos:related, 
skos:broader or skos:narrower.

A snip showing how I could use your structure to describe our data:

:LODataset a rdfs:Class ;
            rdfs:label "a LOD dataset" .
 set:DBpedia a :LODataset ; 
             owl:sameAs <http://dbpedia.org/> .
 set:Geonames a :LODataset ; 
              owl:sameAs <http://sws.geonames.org/> ;
              foaf:topic <http://dbpedia.org/resource/Location_%28geography%29> .
 set:flyted a :LODataset ; 
              owl:sameAs <http://www.fly-ted.org/sparql> ;
              foaf:topic <http://dbpedia.org/resource/Biology> ;
              foaf:topic <http://dbpedia.org/resource/Drosophila> ;
	      foaf:topic <http://dbpedia.org/resource/Image> ;
              rdfs:seeAlso <http://spade.lbl.gov:2021/> ;
              skos;related <http://spade.lbl.gov:2021/> ;
              skos:narrower <http://dbpedia.org/> .

What do you think?

All the best,

> I'm aware of the fact that each LOD dataset *should* provide this kind
> of information about itself, however (i) not all do AFAIK, and (ii) even
> if all did, how can an application determine effectively and efficiently
> which LOD dataset might be good to use for a certain task? I don't want
> to propose a 'centrally controlled registry' with this idea, just a way
> to flag what to expect from a LOD dataset as a kind of jump start. 
> A formal description of the LOD dataset would also be beneficial for
> other exploration purposes, I guess. For example we could express access
> options for a LOD dataset (dump, SPARQL endpoint, etc.) or QoS
> information, even trust issues or (user) ratings might be of interest.
> Any thoughts?
> While I'm here: In case you're around at ESWC08, come and join us at the
> LOD gathering [2]
> Cheers,
> 	Michael
> [1] http://community.linkeddata.org/MediaWiki/index.php?MetaLOD
> [2]
> http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenD
> ata/TenerifeGathering
> ----------------------------------------------------------
>  Michael Hausenblas, MSc.
>  Institute of Information Systems & Information Management
>  JOANNEUM RESEARCH Forschungsgesellschaft mbH
>  Steyrergasse 17, A-8010 Graz, AUSTRIA
>  <office>
>    phone: +43-316-876-1193 (fax:-1191)   
>   mobile: +43-699-1876-1165
>   e-mail: michael.hausenblas@joanneum.at
>    skype: mhausenblas
>      web: http://www.joanneum.at/iis/ 
>  <see also>
>           http://sw-app.org/about.html 
>           http://riese.joanneum.at
> ----------------------------------------------------------

Received on Thursday, 29 May 2008 17:22:28 UTC

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