January 2011 - tdwg-content

Fwd: Is it best practices to use a rdfs:seeAlso link to a potentially multimegabyte PDF?, existing predicate for linking to PDF?
by Peter DeVries 07 Jan '11

07 Jan '11

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(a)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(a)gmail.com> Cc: "<public-lod(a)w3.org>" <public-lod(a)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.… >; ... 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"> >  > <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-b11b… "/> > <txn:speciesOriginalDescriptionHasSpeciesConcept rdf:resource=" http://lod.taxonconcept.org/ses/v6n7p#Species"/> >  > <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/> ------------------------------------------------------------

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Can all DwC be Simple DwC?
by joel sachs 06 Jan '11

06 Jan '11

It may be worth teasing out the boundary of what can/cannot be represented via simple (i.e. flat) Darwin Core. Auxilliary terms (which comprise the classes "MeasurementOrFact" and "ResourceRelationship") are currently left out of Simple Darwin Core. The DwC Terms Quick Reference Guide [1] states: "The terms found under the Auxiliary Terms section can only be meaningfully implemented in an application that supports relational structures". The Simple Darwin Core reference [2] explains "Every field in the Simple Darwin Core may appear either once or not at all in a single record - otherwise how could you distinguish one 'scientificName' field from another one?" Couldn't this be addressed using subscripts? E.g. MeasurementID_1="tail length" MeasurementID_2="brain volume" MeasurementUnit_1="cm" MeasurementUnit_2="cubic cm" MeasurementValue_1="9" MeasurementValue_2="8" (There is precedent for subscripting rdf properties: http://www.w3.org/TR/rdf-schema/#ch_containermembershipproperty) Allowing this would increase the types of data that can be exchanged via spreadsheet. It would also have the virtue of permitting a single DwC standard, which would help to lesssen confusion amongst potential adopters. (The existence of a "Simple Darwin Core" seems to imply that "regular Darwin Core" is not simple.) Are there reasons not to do this? Thanks - Joel. 1. http://rs.tdwg.org/dwc/terms/ 2. http://rs.tdwg.org/dwc/terms/simple/index.htm

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GUIDs for publications (usages and names)
by Steve Baskauf 06 Jan '11

06 Jan '11

I was reviewing some of the previous posts on taxon name usages in an attempt to understand them better. I have learned that the Global Names Index is an attempt to catalog taxon names and that it is possible to generate a URI that points to a name there. Is there a parallel effort to do the same thing for literature references? In other words, if I want to describe the TNU: Andropogon virginicus L. sec. Radford et al. (1968) I think I could find a URI GUID for the name Andropogon virginicus . But is there some place where I could find a unique identifier, or better a URL, or best a URI providing RDF/XML for Linnaeus 1753 (the author and publication for the name) and for Radford et al.1968 (the author and publication that expresses the usage I'm intending). I suppose that this question has previously been answered in the in the many posts on taxon names, concepts, etc. However, since usually my brain goes numb and my eyes glaze over in those threads, I probably missed it. 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

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