Esme, let me second Owen's enthusiasm for more detail if you can
supply it. I think we also need to start putting these efforts along a
"loss" continuum - MODS is already lossy vis-a-vis MARC, and my guess
is that some of the other MARC->RDF transforms don't include all of
the warts and wrinkles of MARC. LC's new bibliographic framework
document sets as a goal to bring along ALL of MARC (a decision that I
think isn't obvious, as we have already discussed here). If we say we
are going from MARC to RDF, how much is actually captured in the
transformed data set? (Yes, that's going to be hard to quantify.)
kc
Quoting Esme Cowles <escow...@ucsd.edu>:
Owen-
Another strategy for capturing MARC data in RDF is to convert it to
MODS (we do this using the LoC MARC to MODS stylesheet:
http://www.loc.gov/standards/marcxml/xslt/MARC21slim2MODS.xsl).
From there, it's pretty easy to incorporate into RDF. There are
some issues to be aware of, such as how to map the MODS XML names to
predicates and how to handle elements that can appear in multiple
places in the hierarchy.
-Esme
--
Esme Cowles <escow...@ucsd.edu>
"Necessity is the plea for every infringement of human freedom. It is the
argument of tyrants; it is the creed of slaves." -- William Pitt, 1783
On 11/28/2011, at 8:25 AM, Owen Stephens wrote:
It would be great to start collecting transforms together - just a
quick brain dump of some I'm aware of
MARC21 transformations
Cambridge University Library - http://data.lib.cam.ac.uk -
transformation made available (in code) from same site
Open University - http://data.open.ac.uk - specific transform for
materials related to teaching, code available at
http://code.google.com/p/luceroproject/source/browse/trunk%20luceroproject/OULinkedData/src/uk/ac/open/kmi/lucero/rdfextractor/RDFExtractor.java (MARC transform is in libraryRDFExtraction
method)
COPAC - small set of records from the COPAC Union catalogue - data
and transform not yet published
Podes Projekt - LinkedAuthors - documentation at
http://bibpode.no/linkedauthors/doc/Pode-LinkedAuthors-Documentation.pdf -
2 stage transformation firstly from MARC to FRBRized version of
data, then from FRBRized data to RDF. These linked from documentation
Podes Project - LinkedNonFiction - documentation at
http://bibpode.no/linkednonfiction/doc/Pode-LinkedNonFiction-Documentation.pdf - MARC data transformed using xslt
https://github.com/pode/LinkedNonFiction/blob/master/marcslim2n3.xsl
British Library British National Bibliography -
http://www.bl.uk/bibliographic/datafree.html - data model
documented, but no code available
Libris.se - some notes in various presentations/blogposts (e.g.
http://dc2008.de/wp-content/uploads/2008/09/malmsten.pdf) but can't
find explicit transformation
Hungarian National library -
http://thedatahub.org/dataset/hungarian-national-library-catalog
and http://nektar.oszk.hu/wiki/Semantic_web#Implementation - some
information on ontologies used but no code or explicit
transformation (not 100% sure this is from MARC)
Talis - implemented in several live catalogues including
http://catalogue.library.manchester.ac.uk/ - no documentation or
code afaik although some notes in
MAB transformation
HBZ - some of the transformation documented at
https://wiki1.hbz-nrw.de/display/SEM/Converting+the+Open+Data+from+the+hbz+to+BIBO, don't think any code
published?
Would be really helpful if more projects published their
transformations (or someone told me where to look!)
Owen
Owen Stephens
Owen Stephens Consulting
Web: http://www.ostephens.com
Email: o...@ostephens.com
Telephone: 0121 288 6936
On 26 Nov 2011, at 15:58, Karen Coyle wrote:
A few of the code4lib talk proposals mention projects that have or
will transform MARC records into RDF. If any of you have
documentation and/or examples of this, I would be very interested
to see them, even if they are "under construction."
Thanks,
kc
--
Karen Coyle
kco...@kcoyle.net http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet
--
Karen Coyle
kco...@kcoyle.net http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet
