Pete, Thanks for the response about term resolution. I'm over my head on that topic, so I'll let others respond to that part.
With regards to a vocabulary that uses URIs rather than literals, I'm in favor of that. At one point in a previous discussion, I think it was suggested that separate terms be created for literal and URI versions of terms like dwc:recordedBy. At first I liked that idea, but after thinking about it and playing with it for a while, I think that the suggestion of just applying a label property to the resource identified by the URI is simpler and wouldn't require a proliferation of new terms. For example:
dcterms:creator <rdf:Description rdf:about="http://biocol.org/urn:lsid:biocol.org:col:15539%22%3E rdfs:labelUniversity of Louisiana at Monroe Herbarium</rdfs:label> </rdf:Description> </dcterms:creator>
could be used if both a literal and URI were available and
dcterms:creatorUniversity of Louisiana at Monroe Herbarium</dcterms:creator>
could be used if a URI were not available. It seems like it should be relatively easy for a linked data client to have contingencies to deal with this. Even with technology that's semantically "dumb" like XSLT, it's pretty easy to code for the two possibilities.
But I suppose it would be good to have some kind of consensus that this is the preferred approach. Otherwise, separate terms might be better. There aren't a whole lot of dwc terms to which this situation would apply.
Steve
Peter DeVries wrote:
By "efficient", I mean a vocabulary that uses standard resolvable URI's instead of literals for standard terms etc. This solution would also avoid the problem that Markus just mentioned.
I am also wondering if the "individual" definition should be changed to mean one individual organism rather than a potential collection of individuals. Individuals from the same colony could be represented using a separate related vocabulary. Allowing multiple individuals will cause problems for consuming applications. For instance, is the queen a separate individual or not? How do you differentiate between a photo of the queen vs. a photo of one of the workers. There are also potential problems even if the individuals are all workers.
I have been thinking that for some attributes like character states, it might be best to have a family level ontology. In this example, you might have a "formicidae_ontology", that could be used to deal with individuals from the same colony as well as ant specific character states.
xmlns:ant="http://rs.gbif.org/family_ontology/ant.owl#"
<rdf:Description rdf:about="http://example.org/individual/123412%22%3E
<ant:colonyMateOf rdf:resource="http://example.org/individual/123414%22/%3E </rdf:Description>
This could be defined as a subproperty of dc:relation or something similar in the gbif/tdwg vocabulary.
- Pete
On Tue, Aug 24, 2010 at 6:43 PM, Steve Baskauf <steve.baskauf@vanderbilt.edu mailto:steve.baskauf@vanderbilt.edu> wrote:
I was doing some GUID testing using a Linked Data client and I noticed that some Darwin Core terms did not seem to resolve to anything. I ran a test using http://demo.openlinksw.com/rdfbrowser2/ http://api.talis.com/stores/iand-dev1/items/dipper.html http://www5.wiwiss.fu-berlin.de/marbles/ and http://dataviewer.zitgist.com/ I first I looked up http://purl.org/dc/terms/creator and all four clients reported the properties of the term. Then I tried http://rs.tdwg.org/dwc/terms/basisOfRecord and nothing happened with any of them. I ran a Vapour http://validator.linkeddata.org/vapour validation on the basisOfRecord URI and got the following message: Vapour was unable to complete the request due to the following exception: ForbiddenAddress: forbidden request from 98.87.45.8 to http://rs.tdwg.org/dwc/terms/basisOfRecord (resolves to IP 192.38.28.106), internal IP addresses are forbidden I have no idea what that means, but all of this seems to mean that Darwin Core is currently "broken" from a Linked Data point of view. Steve -- Steven J. Baskauf, Ph.D., Senior Lecturer Vanderbilt University Dept. of Biological Sciences postal mail address: VU Station B 351634 Nashville, TN 37235-1634, U.S.A. delivery address: 2125 Stevenson Center 1161 21st Ave., S. Nashville, TN 37235 office: 2128 Stevenson Center phone: (615) 343-4582, fax: (615) 343-6707 http://bioimages.vanderbilt.edu _______________________________________________ tdwg-tag mailing list tdwg-tag@lists.tdwg.org <mailto:tdwg-tag@lists.tdwg.org> http://lists.tdwg.org/mailman/listinfo/tdwg-tag--
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/