I thought that I would run the PDF question past the some lod experts. Here is the first reply - Pete ---------- Forwarded message ---------- From: Hugh Glaser <hg@ecs.soton.ac.uk> Date: Thu, Jan 6, 2011 at 2:44 PM Subject: Re: Is it best practices to use a rdfs:seeAlso link to a potentially multimegabyte PDF?, existing predicate for linking to PDF? To: Peter DeVries <pete.devries@gmail.com> Cc: "<public-lod@w3.org>" <public-lod@w3.org> 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.p...
; ...
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-b11b9... "/> <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 ------------------------------------------------------------
-- Hugh Glaser, Intelligence, Agents, Multimedia School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ Work: +44 23 8059 3670, Fax: +44 23 8059 3045 Mobile: +44 78 9422 3822, Home: +44 23 8061 5652 http://www.ecs.soton.ac.uk/~hg/ -- --------------------------------------------------------------- Pete DeVries Department of Entomology University of Wisconsin - Madison 445 Russell Laboratories 1630 Linden Drive Madison, WI 53706 TaxonConcept Knowledge Base <http://www.taxonconcept.org/> / GeoSpecies Knowledge Base <http://lod.geospecies.org/> About the GeoSpecies Knowledge Base <http://about.geospecies.org/> ------------------------------------------------------------