[ckan-dev] RDF about CKAN datasets: not as good as it used to be.

[Ross Jones]

Hi Tim,

Can I clarify whether you mean the RDF you get directly from the datahub, or a responses you get from the new SPARQL endpoint?  

Ross.

On 19 May 2012, at 17:09, Timothy Lebo wrote:

> CKAN,
> 
> A few months ago, the RDF provided when dereferencing a dataset's URI was very useful.
> It described the datasets using many of the "right" RDF vocabularies (dcterms, void, etc).
> 
> The RDF that is returned now no longer has these nice descriptions. 
> Instead, it seems to be a mindless transcription of the CKAN record.
> 
> For example, the older descriptions gave:
> 
> <http://thedatahub.org/dataset/farmers-markets-geographic-data-united-states>
>    void:subset [
>        void:target <http://thedatahub.org/dataset/farmers-markets-geographic-data-united-states>, <http://thedatahub.org/dataset/geonames-semantic-web> ;
>        void:triples 50 ;
>        a void:Linkset
>    ], [
>        void:target <http://thedatahub.org/dataset/dbpedia>, <http://thedatahub.org/dataset/farmers-markets-geographic-data-united-states> ;
>        void:triples 52 ;
>        a void:Linkset
>    ], [
>        void:target <http://thedatahub.org/dataset/farmers-markets-geographic-data-united-states>, <http://thedatahub.org/dataset/govtrack> ;
>        void:triples 52 ;
>        a void:Linkset
>    ] ;
>    void:triples 130005 ;
> 
> 
> 
> but now it's simply:
> 
> <http://thedatahub.org/dataset/farmers-markets-geographic-data-united-states>
>    dct:relation  [
>        rdf:value "130005" ;
>        rdfs:label "triples"
>    ], [
>        rdf:value "52" ;
>        rdfs:label "links:dbpedia"
>    ], [
>        rdf:value "50" ;
>        rdfs:label "links:geonames-semantic-web"
>    ], [
>        rdf:value "52" ;
>        rdfs:label "links:govtrack"
>    ] ;
> 
> 
> My old copies of the dataset descriptions mentioned a "GoLD CKAN 1.0" that was credited for the nicer modeling.
> 
> Where did that go? Can we get it back?
> 
> Thanks,
> Tim Lebo
> 
> 
> 
> 
> <http://semantic.ckan.net/record/91d2c0de-75a4-4bb6-b260-bc2946e1be8b>
>    dc:source <http://ckan.net/> ;
>    opmv:wasGeneratedBy [
>        opmv:used <http://ckan.net/api/rest/package/farmers-markets-geographic-data-united-states>, <http://ckan.net/api/rest/revision/9c2545b8-ebf1-42bf-ac92-633ff5ceba3f> ;
>        opmv:wasControlledBy [
>            a foaf:Agent ;
>            foaf:name "GoLD CKAN 1.0"
>        ] ;
>        opmv:wasPerformedAt [
>            a time:Instant ;
>            time:inXSDDateTime "2012-01-31T05:34:32Z"^^xsd:dateTime
>        ] ;
>        a opmv:Process
>    ] ;
>    a dcat:CatalogRecord ;
>    dcat:dataset <http://thedatahub.org/dataset/farmers-markets-geographic-data-united-states> ;
> 
> …
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