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Re: substitute for skos:isSubjectOf

From: Alistair Miles <alistair.miles@zoo.ox.ac.uk>
Date: Fri, 13 Feb 2009 12:57:05 +0000
To: Neubert Joachim <J.Neubert@zbw.eu>
Cc: Dan Brickley <danbri@danbri.org>, public-esw-thes@w3.org
Message-ID: <20090213125703.GA9542@skiathos>

Hi Joachim,

The site looks good, I'm looking forward to a full release :)

I checked out the triples, looks very reasonable. 

I had one thought about a possible option for representing the labels,
I'm not necessarily saying it's better, but just raising it as an
option...

Instead of ...

<skos:Concept rdf:about="http://www.zbw.eu/beta/stw/thsys/090858891">
  <skos:prefLabel xml:lang="en">P.01.01  Crop production commodities</skos:prefLabel>
  <skos:prefLabel xml:lang="de">P.01.01  Pflanzenbauprodukte</skos:prefLabel>
</skos:Concept>

...you could do something like...

<skos:Concept rdf:about="http://www.zbw.eu/beta/stw/thsys/090858891">
  <skos:prefLabel xml:lang="en">Crop production commodities</skos:prefLabel>
  <skos:prefLabel xml:lang="de">Pflanzenbauprodukte</skos:prefLabel>
  <skos:notation rdf:datatype="http://www.zbw.eu/beta/stw/notation">P.01.01</skos:notation>
</skos:Concept>

Cheers,

Alistair


On Fri, Feb 06, 2009 at 01:15:48PM +0100, Neubert Joachim wrote:
> 
> Hi Dan,
> 
> you asked about using rev= instead of rel= in RDFa notation. That's possible, of cause, and since I have a tech preview of the application online now (eg. http://www.zbw.eu/beta/stw/descriptor/14066-0), I built it experimentally with a custom property, stw:indexes (as a subproperty of rdfs:seeAlso) and the embedded RDFa relations
> 
> 	rel="stw:indexes rdfs:seeAlso" 
> 	rev="dcterms:subject"
> 
> to link from the concept to the search result set of the library system. 
> 
> Browsers behave differently on this (Marbles and Tabulator display an "is subject of" line, Zitgist does not), so tool support may or may not be given.
> 
> However, what seems more important to me: As Antoine pointed out earlier in this conversation, any subject/isSubjectOf relation is highly asymetric. Semantic web browsers are awfully slow already. They would be much more so if they had to display all reverse relations to "dc:subject" in a big library holdings (let alone from the web in total). I'm quite sure that the display of inverse relations will be optional in future versions of such tools.
> 
> Therefore I think it makes sense to use a property which expresses the desired relation directly.
> 
> Cheers, Joachim
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Dan Brickley [mailto:danbri@danbri.org] 
> > Gesendet: Donnerstag, 5. Februar 2009 17:53
> > An: Neubert Joachim
> > Cc: public-esw-thes@w3.org
> > Betreff: Re: substitute for skos:isSubjectOf
> > 
> > On 22/1/09 15:56, Neubert Joachim wrote:
> > > The SKOS Primer recommends using dc:subject for indexing 
> > purposes. For 
> > > the inverse relation - this concept "is subject of" or 
> > "indexes" that 
> > > resource - it gives no recommendation. The discussion about 
> > indexing 
> > > properties in SKOS (commendably summarized in
> > > http://www.w3.org/2006/07/SWD/wiki/SkosDesign/Indexing) 
> > also paid no 
> > > attention to the now vanished skos:isSubjectOf.
> > > But it's definitively missing. My use case is this:
> > > On the upcoming RDFa-enriched web pages for the Standard Thesaurus 
> > > Economics (maintained by the German National Library of Economics, 
> > > ZBW),
> > 
> > (nice work btw :)
> > 
> > > we will include links to library resources. This links trigger a 
> > > search for the concept at hand in the subject index of the 
> > library database - e.g.
> > > 
> > http://www.econis.eu/DB=1/LNG=EN/CMD?ACT=SRCHM&IKT3=46&TRM3=Black+mark
> > > et 
> > > 
> > <http://www.econis.eu/DB=1/LNG=EN/CMD?ACT=SRCHM&IKT3=46&TRM3=Black+mar
> > > ket> searches for the concept http://zbw.eu/stw/descriptor/19289-4 
> > > with the prefLabel "Black market" and returns a result page with 
> > > further links to books, articles and so on (not RDFa-enriched up to 
> > > now, but this could change).
> > 
> > Can you use rev= instead of rel= in RDFa notation?
> > 
> > cheers,
> > 
> > Dan
> > 
> > --
> > http://danbri.org/
> > 
> 

-- 
Alistair Miles
Senior Computing Officer
Image Bioinformatics Research Group
Department of Zoology
The Tinbergen Building
University of Oxford
South Parks Road
Oxford
OX1 3PS
United Kingdom
Web: http://purl.org/net/aliman
Email: alistair.miles@zoo.ox.ac.uk
Tel: +44 (0)1865 281993
Received on Friday, 13 February 2009 12:57:42 GMT

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