Not a naive idea at all. If you have the stomach for it, you could extract the Subject Heading / Dewey combinations out of say the LC Catalog MARC data [1] to use as training data for some kind of clustering [2] algorithm. You might even be able to do something simple like keep a count of the Dewey ranges associated with each subject heading.
I’m kind of curious myself, so I could work on getting the subject heading / dewey combinations if you want?
//Ed
[1] https://archive.org/details/marc_records_scriblio_net
[2] https://en.wikipedia.org/wiki/Cluster_analysis
On Dec 10, 2013, at 8:18 AM, Irina Arndt <[log in to unmask]> wrote:
> Hi CODE4LIB,
>
> we would like to add DDC classes to a bunch of MARC records, which contains only LoC Subject Headings.
> Does anybody know, if a mapping between LCSH and DDC is anywhere existent (and available)?
>
> I understood, that WebDewey http://www.oclc.org/dewey/versions/webdewey.en.html might provide such a service, but
>
> · we are no OCLC customers or subscribers to WebDewey
>
> · even if we were, I'm not sure, if the service matches our needs
>
> I'm thinking of a tool, where I can upload my list of subject headings and get back a list, where the matching Dewey classes have been added (but a 'simple' csv file with LCSH terms and DDC classes would be helpful as well- I am fully aware, that neither LCSH nor DDC are simple at all...) . Naïve idea...?
>
> Thanks for any clues,
> Irina
>
>
> -------
>
> Irina Arndt
> Max Planck Digital Library (MPDL)
> Library System Coordinator
> Amalienstr. 33
> D-80799 Muenchen, Germany
>
> Tel. +49 89 38602-254
> Fax +49 89 38602-290
>
> Email: [log in to unmask]<mailto:[log in to unmask]>
> http://www.mpdl.mpg.de
|
