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

Sat May 19 17:09:41 BST 2012

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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