W3C home > Mailing lists > Public > public-lld@w3.org > October 2011

Re: Linked Library Holdings/Items

From: Jakob Voss <jakob.voss@gbv.de>
Date: Fri, 21 Oct 2011 12:14:24 +0200
Message-ID: <4EA14600.1020102@gbv.de>
To: public-lld@w3.org
On 19.10.2011 00:43, Lukas Koster wrote:

> Jakob is right when he says we don't have Expressions in our catalogues.
> Nor do we have Works. We only have Manifestations (=bibliographic
> records) and Items (holdings/items). Works and Expressions are implicit
> and repeated. It is virtually impossible to add these FRBR entities to
> existing systems, also with RDA.

I am not sure whether we actually describe Expressions, but there seems 
to be consensus on this list that most library catalog records are about 
frbr:Manifestations and frbr:Item. So I started with converting library 
records to frbr:Manifestation and frbr:Item in RDF and try to link these 
entities to other resources (organizations, places, works etc.). 
Actually there are URIs for works, for instance:

http://www.librarything.com/work/3032251
http://dbpedia.org/resource/The_Diary_of_a_Young_Girl
http://dbpedia.org/resource/The_Diary_of_Anne_Frank_%281959_film%29
http://dbpedia.org/resource/The_Diary_of_Anne_Frank_%281980_film%29
http://dbpedia.org/resource/The_Diary_of_Anne_Frank_%28TV_serial%29
http://dbpedia.org/resource/The_Diary_of_Anne_Frank_%28opera%29
http://dbpedia.org/resource/The_Diary_of_Anne_Frank_%28play%29

Maybe some of this URIs better refer to frbr:Expressions, but I do not 
really understand frbr:Expressions.

> Karen is right when saying that library linked data is about holdings
> information (unique data) that should be linked to web based
> bibliographic metadata. This means we also need to replace existing
 > introverted catalogue systems with new extroverted systems.

I am just about to create URIs for frbr:Items for more then 400 
libraries (branches not counted) and 80 million items, for instance the 
following URIs refers to an exemplar of the diary of Anne Frank as book 
an to one exemplar of the 1959 film:

http://uri.gbv.de/item/opac-de-hil2:epn:032163339
http://uri.gbv.de/item/opac-de-hil2:epn:645178810

Until now DAIA classes and properties seem to fit for the 
library-related parts. I even removed some proposed DAIA classes in 
favour of  already existing classes. The core classes are illustrated in 
this diagram:

http://www.gbv.de/wikis/cls/DAIA#DAIA_model_as_graph

The reason why I do not fully stick to FRBR with DAIA (I prefer 
bibo:Document from the Bibliographic ontology, which is more or less 
equivalent to foaf:Document) is the common use case of DAIA. I bet that 
people often want to know about the availability of some document 
without telling you, or even without knowing, whether they refer to a 
work or to an expression or to a manifestation. And they are right.

Unfortunately there is no connection between FRBR and this kind of 
normal documents. I would map it the following way:

bibo:Document = frbr:Endeavour - frbr:Item

This implies that frbr:Work, frbr:Expression, and frbr:Manifestation
or subclasses of bibo:Document. We can discuss about not including 
frbr:Work, but some explicit connection is needed.

Jakob

-- 
Jakob Vo▀ <jakob.voss@gbv.de>, skype: nichtich
Verbundzentrale des GBV (VZG) / Common Library Network
Platz der Goettinger Sieben 1, 37073 G÷ttingen, Germany
+49 (0)551 39-10242, http://www.gbv.de
Received on Friday, 21 October 2011 10:15:06 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Friday, 21 October 2011 10:15:07 GMT