The current DwC Terms version (at http://rs.tdwg.org/dwc/rdf/dwcterms.rdf)
defines the domain for (at least some) object properties.
Unless I am missing something this means that when I use DwC Terms for
properties I implicitly assert the class of the subject, which means
that either I can use DwC terms only for subjects of the type they are
intended for (and why would one want to limit DwC's use in this way?),
or reasoning based on RDF or OWL extractions of leads to problems.
For example, in the Phenoscape project [1] we would like to link
characters, states, or OTUs to the specimens based on which a
systematist defined a (or all) character(s) or state(s). The specimens
would be described in a NeXML document [2] with embedded RDFa
annotation by institutionCode, collectionCode, and catalogNumber. The
RDF extracted from that when run in a reasoner (which we will do)
would implicitly assert that the specimen is a DwCTerms:Occurrence.
Right now that probably doesn't hurt much in this case, but it might
in the future, and I'm not sure what is gained from forcing those
implicit assertions in the vocabulary.
Should I post this as an issue to the tracker on Google Code, too?
-hilmar
[1] http://phenoscape.org
[2] http://nexml.org
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: Hilmar Lapp -:- Durham, NC -:- hlapp at duke dot edu :
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Right now the DwC Terms RDF download at http://rs.tdwg.org/dwc/rdf/dwcterms.rdf
sets the namespace URI to http://rs.tdwg.org/dwc/terms/ and doesn't
seem to otherwise mention the download URI.
I may be missing something, but doesn't that mean that DwC Terms
referenced in RDF documents using the canonical namespace URI (http://rs.tdwg.org/dwc/terms/
) can't be resolved?
I guess at present that doesn't matter too much as there isn't really
anything in the DwC Terms ontology that would tell a client agent
something about the term that it wouldn't already know. But it's maybe
worth noting that that's different from other well-known vocabularies.
For example, the canonical URI for DC Terms (http://purl.org/dc/
terms/) resolves to the RDF for the whole vocabulary.
(BTW I'm not sure this is the right list to post DwC questions/issues
to - let me know if it's not and where to send instead)
-hilmar
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: Hilmar Lapp -:- Durham, NC -:- hlapp at duke dot edu :
===========================================================
Hi,
I was just wondering, is it possible to obtain, somewhere from the net, the
full phylogenetic tree for life on earth?
How big would the data be? How many nodes are there (counting a species, and
every split in the graph, as a node)?
I'm thinking of fitting it inside the interatctorium (www.interactorium.net)
Cheers
--
-- -- -- -- -- -- -- -- -- -- -- -- -- --
Yose Widjaja
Supreme Emperor @ Jormy Games
www.jormy.com
yose(a)jormy.com
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Folks,
Apologies to those who are not at the conference.
I have made a reservation for 7:30 p.m. dinner for us Tuesday night at the
Albert, a pub with an upstairs dining room at 52 Victoria Street,
Westminster, London. The cross street is Buckingham Gate.
I'm sorry for conflicts that I know that some of you have. We'll use this
meeting to get to know each other better and think about future directions
for the SPM standard. Come prepared with your experiences and ideas. But
we'll save much of the serious discussion for this list and for TDWG in
Montpelier.
Cyndy
--
Cynthia Sims Parr
Director of the Species Pages Group
Encyclopedia of Life http://www.eol.org
Office: 202.633.8730
Fax: 202.633.8742
parrc(a)si.edu
Mailing address:
National Museum of Natural History
P.O. Box 37012
MRC 106
Washington, DC 20013-7012
