But that's me making a reasonable guess and getting on with it.

The EPrints document is a URI which represents a conceptual document which consists of a number of actual files, eg. HTML+JPG+CSS, so the dct:hasPart makes sense there. The main issue is how to relate the document to the metadata record, and you rapidly decend into FRBR hell.

Until a few people have consumed my data I consider it very much a work in progress!

Hugh Glaser wrote:
I see that Chris Gutteridge uses dc:hasPart for the ePrints RDF (eprints.org).
Eg:

<http://eprints.ecs.soton.ac.uk/21681/>
        dc:format "text/html";
        dc:title "HTML Summary of #21681 Consuming multiple linked data sources: 
Challenges and Experiences";
        foaf:primaryTopic <http://eprints.ecs.soton.ac.uk/id/eprint/21681> .
...
<http://eprints.ecs.soton.ac.uk/id/eprint/21681>
        ep:hasDocument <http://eprints.ecs.soton.ac.uk/id/document/36430>,
...
<http://eprints.ecs.soton.ac.uk/id/document/36430>
        dct:hasPart 
<http://eprints.ecs.soton.ac.uk/21681/1/cold2010%2Dpaper16%2Dcamera%2Dready.pdf>;
...

Cheers
Hugh

On 6 Jan 2011, at 19:40, Peter DeVries wrote:

I was wondering if there is an existing predicate for linking to a PDF file?

I would like to incorporate a link between bibliographic reference description 
and a URL to the location of a PDF of that document.
I had minted a predicate txn:hasPDFVersion, as demonstrated in this RDF snippet. (Part of http://lod.taxonconcept.org/ses/v6n7p.rdf )

  <txn:SpeciesOriginalDescription 
rdf:about="http://lod.taxonconcept.org/ses/v6n7p#OriginalDescription";>
    <!-- Ideally, this should link to a resource in the Biodiversity Heritage 
Library -->
    <dcterms:title>Original Published Description relating to Species Concept Puma 
concolor se:v6n7p</dcterms:title>
    
<dcterms:identifier>http://lod.taxonconcept.org/ses/v6n7p#OriginalDescription</dcterms:identifier>
    <dcterms:description>LOD metadata about the original species description relating 
to Species Concept Puma concolor se:v6n7p</dcterms:description>
    <dcterms:isPartOf 
rdf:resource="http://lod.taxonconcept.org/ses/v6n7p#Species"/>
    <txn:hasAuthorURI rdf:resource="http://dbpedia.org/resource/Carl_Linnaeus"/>
    <txn:hasBasionymName>Felis concolor Linnaeus 1771</txn:hasBasionymName>
    <txn:year>1771</txn:year>
    <txn:hasPDFVersion 
rdf:resource="http://assets.geospecies.org/spec_concept_uuid/603bebac-cc44-4168-bbf7-b11b976f9d79/Felis_concolor_Linnaeus_1771.pdf"/>
    <txn:speciesOriginalDescriptionHasSpeciesConcept 
rdf:resource="http://lod.taxonconcept.org/ses/v6n7p#Species"/>
    <!-- There should be a type specimen. Add link to GBIF via 
'txn:sodHasTypeSpecimen' if they know about it. -->
    <wdrs:describedBy rdf:resource="http://lod.taxonconcept.org/ses/v6n7p.rdf"/>
  </txn:SpeciesOriginalDescription>

Some have suggested using rdfs:seeAlso to link to what could be a multimegabyte 
PDF, but I think this would cause problems for a number of RDF crawlers like 
Elmo.

In summary, I think it would be useful to have a predicate that can be used for 
linking specifically to a PDF document.

Is there an existing predicate for this?

What do people think about the suggestion to use rdfs:seeAlso to link to a PDF?

I would also like to know of others thoughts or suggestions regarding this 
issue,

Respectfully,

- Pete



---------------------------------------------------------------
Pete DeVries
Department of Entomology
University of Wisconsin - Madison
445 Russell Laboratories
1630 Linden Drive
Madison, WI 53706
TaxonConcept Knowledge Base / GeoSpecies Knowledge Base
About the GeoSpecies Knowledge Base
------------------------------------------------------------


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