W3C home > Mailing lists > Public > public-esw-thes@w3.org > February 2009

AW: substitute for skos:isSubjectOf

From: Neubert Joachim <J.Neubert@zbw.eu>
Date: Fri, 13 Feb 2009 18:36:03 +0100
Message-ID: <3A59BB6451C972429019B12996F92DAD0239239E@frodo.zbw-nett.zbw-kiel.de>
To: "Alistair Miles" <alistair.miles@zoo.ox.ac.uk>
Cc: "Dan Brickley" <danbri@danbri.org>, <public-esw-thes@w3.org>

Hi Alistair,

you are right, the notation was missing in the RDFa pages. I added it in the current version (no big deal, since it already was in the SKOS source file), a little different from your suggestion:

<skos:notation rdf:datatype="http://www.w3.org/2001/XMLSchema#string">P.01.01</skos:notation>
<rdfs:label xml:lang="en">Crop production commodities</rdfs:label>
<rdfs:label xml:lang="de">Pflanzenbauprodukte</rdfs:label>

This way, anybody who needs the values separately could get them. The skos:prefLabelS are generated by a concatination of these values. In our mind, the concatination forms the most familiar and the most informative display in standard tools (eg. Simon Jupp's SkosEditor). However I am not sure that this is the best way to define it.

Thank you for the encouraging feedback - Joachim


> -----Ursprüngliche Nachricht-----
> Von: Alistair Miles [mailto:alistair.miles@zoo.ox.ac.uk] 
> Gesendet: Freitag, 13. Februar 2009 13:57
> An: Neubert Joachim
> Cc: Dan Brickley; public-esw-thes@w3.org
> Betreff: Re: substitute for skos:isSubjectOf
> 
> 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</sk
os: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+ma
> > > rk
> > > > et
> > > > 
> > > 
> <http://www.econis.eu/DB=1/LNG=EN/CMD?ACT=SRCHM&IKT3=46&TRM3=Black+m
> > > ar
> > > > 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 17:36:46 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:39:03 GMT