I thought that I would run the PDF question past the some lod experts.<div><br></div><div>Here is the first reply<br><div><br></div><div>- Pete<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Hugh Glaser</b> <span dir="ltr">&lt;<a href="mailto:hg@ecs.soton.ac.uk">hg@ecs.soton.ac.uk</a>&gt;</span><br>
Date: Thu, Jan 6, 2011 at 2:44 PM<br>Subject: Re: Is it best practices to use a rdfs:seeAlso link to a potentially  multimegabyte PDF?, existing predicate for linking to PDF?<br>To: Peter DeVries &lt;<a href="mailto:pete.devries@gmail.com">pete.devries@gmail.com</a>&gt;<br>
Cc: &quot;&lt;<a href="mailto:public-lod@w3.org">public-lod@w3.org</a>&gt;&quot; &lt;<a href="mailto:public-lod@w3.org">public-lod@w3.org</a>&gt;<br><br><br>I see that Chris Gutteridge uses dc:hasPart for the ePrints RDF (<a href="http://eprints.org" target="_blank">eprints.org</a>).<br>

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

...<br>
<br>
Cheers<br>
Hugh<br>
<div><div></div><div class="h5"><br>
On 6 Jan 2011, at 19:40, Peter DeVries wrote:<br>
<br>
&gt; I was wondering if there is an existing predicate for linking to a PDF file?<br>
&gt;<br>
&gt; I would like to incorporate a link between bibliographic reference description and a URL to the location of a PDF of that document.<br>
&gt;<br>
&gt; I had minted a predicate txn:hasPDFVersion, as demonstrated in this RDF snippet. (Part of <a href="http://lod.taxonconcept.org/ses/v6n7p.rdf" target="_blank">http://lod.taxonconcept.org/ses/v6n7p.rdf</a> )<br>
&gt;<br>
&gt;   &lt;txn:SpeciesOriginalDescription rdf:about=&quot;<a href="http://lod.taxonconcept.org/ses/v6n7p#OriginalDescription" target="_blank">http://lod.taxonconcept.org/ses/v6n7p#OriginalDescription</a>&quot;&gt;<br>
&gt;     &lt;!-- Ideally, this should link to a resource in the Biodiversity Heritage Library --&gt;<br>
&gt;     &lt;dcterms:title&gt;Original Published Description relating to Species Concept Puma concolor se:v6n7p&lt;/dcterms:title&gt;<br>
&gt;     &lt;dcterms:identifier&gt;<a href="http://lod.taxonconcept.org/ses/v6n7p#OriginalDescription" target="_blank">http://lod.taxonconcept.org/ses/v6n7p#OriginalDescription</a>&lt;/dcterms:identifier&gt;<br>
&gt;     &lt;dcterms:description&gt;LOD metadata about the original species description relating to Species Concept Puma concolor se:v6n7p&lt;/dcterms:description&gt;<br>
&gt;     &lt;dcterms:isPartOf rdf:resource=&quot;<a href="http://lod.taxonconcept.org/ses/v6n7p#Species" target="_blank">http://lod.taxonconcept.org/ses/v6n7p#Species</a>&quot;/&gt;<br>
&gt;     &lt;txn:hasAuthorURI rdf:resource=&quot;<a href="http://dbpedia.org/resource/Carl_Linnaeus" target="_blank">http://dbpedia.org/resource/Carl_Linnaeus</a>&quot;/&gt;<br>
&gt;     &lt;txn:hasBasionymName&gt;Felis concolor Linnaeus 1771&lt;/txn:hasBasionymName&gt;<br>
&gt;     &lt;txn:year&gt;1771&lt;/txn:year&gt;<br>
&gt;     &lt;txn:hasPDFVersion rdf:resource=&quot;<a href="http://assets.geospecies.org/spec_concept_uuid/603bebac-cc44-4168-bbf7-b11b976f9d79/Felis_concolor_Linnaeus_1771.pdf" target="_blank">http://assets.geospecies.org/spec_concept_uuid/603bebac-cc44-4168-bbf7-b11b976f9d79/Felis_concolor_Linnaeus_1771.pdf</a>&quot;/&gt;<br>

&gt;     &lt;txn:speciesOriginalDescriptionHasSpeciesConcept rdf:resource=&quot;<a href="http://lod.taxonconcept.org/ses/v6n7p#Species" target="_blank">http://lod.taxonconcept.org/ses/v6n7p#Species</a>&quot;/&gt;<br>
&gt;     &lt;!-- There should be a type specimen. Add link to GBIF via &#39;txn:sodHasTypeSpecimen&#39; if they know about it. --&gt;<br>
&gt;     &lt;wdrs:describedBy rdf:resource=&quot;<a href="http://lod.taxonconcept.org/ses/v6n7p.rdf" target="_blank">http://lod.taxonconcept.org/ses/v6n7p.rdf</a>&quot;/&gt;<br>
&gt;   &lt;/txn:SpeciesOriginalDescription&gt;<br>
&gt;<br>
&gt; 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.<br>
&gt;<br>
&gt; In summary, I think it would be useful to have a predicate that can be used for linking specifically to a PDF document.<br>
&gt;<br>
&gt; Is there an existing predicate for this?<br>
&gt;<br>
&gt; What do people think about the suggestion to use rdfs:seeAlso to link to a PDF?<br>
&gt;<br>
&gt; I would also like to know of others thoughts or suggestions regarding this issue,<br>
&gt;<br>
&gt; Respectfully,<br>
&gt;<br>
&gt; - Pete<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; ---------------------------------------------------------------<br>
&gt; Pete DeVries<br>
&gt; Department of Entomology<br>
&gt; University of Wisconsin - Madison<br>
&gt; 445 Russell Laboratories<br>
&gt; 1630 Linden Drive<br>
&gt; Madison, WI 53706<br>
&gt; TaxonConcept Knowledge Base / GeoSpecies Knowledge Base<br>
&gt; About the GeoSpecies Knowledge Base<br>
&gt; ------------------------------------------------------------<br>
<br>
</div></div>--<br>
<font color="#888888">Hugh Glaser,<br>
              Intelligence, Agents, Multimedia<br>
              School of Electronics and Computer Science,<br>
              University of Southampton,<br>
              Southampton SO17 1BJ<br>
Work: +44 23 8059 3670, Fax: +44 23 8059 3045<br>
Mobile: +44 78 9422 3822, Home: +44 23 8061 5652<br>
<a href="http://www.ecs.soton.ac.uk/~hg/" target="_blank">http://www.ecs.soton.ac.uk/~hg/</a><br>
<br>
<br>
</font></div><br><br clear="all"><br>-- <br>---------------------------------------------------------------<br>Pete DeVries<br>Department of Entomology<br>University of Wisconsin - Madison<br>445 Russell Laboratories<br>
1630 Linden Drive<br>Madison, WI 53706<br><a href="http://www.taxonconcept.org/" target="_blank">TaxonConcept Knowledge Base</a> / <a href="http://lod.geospecies.org/" target="_blank">GeoSpecies Knowledge Base</a><br><a href="http://about.geospecies.org/" target="_blank">About the GeoSpecies Knowledge Base</a><br>
------------------------------------------------------------<br>
</div></div>