For #1, you need what you asked for, probably, if you want the subject
headings to be consistent with other LCSH on the rest of your records.
For #2, you can provide a useful topical/subject type heading via much
simpler and more feasible solutions than mapping to LCSH. For #2, you
don't need a map to LCSH, you need the LCC schedules with descriptions
of what each range of LCC call numbers is for, in machine-readable form.
(Along wtih an algorithm to determine if a call number is in a range of
LCC call numbers, which is trickier than you might originally think
becuase LCC call numbers sort oddly). If you are interested in that
approach, it's a different question, which no doubt some people on this
list can provide tips for.
Thanks everybody!
this is useful for a couple of purposes
1) sometimes we have records that have call numbers, but no subject headings.
this would be useful to provide those.
2) i'm thinking of providing a 'subject heading' label to our shelf browser --
so users see, in addition to the callnumber -- what the call number means.
thanks again!
rick
On Tue, Oct 18, 2011 at 2:33 PM, Jonathan Rochkind<[email protected]> wrote:
Anyone know if the OCLC Terminology Service provides such a mapping? The
Terminology Service may be free if you are already an OCLC cataloging
member.
At one point I think I saw an absolutely free open access machine readable
mapping somewhere, that was made at some point in the past and no longer
updated... but I cant' remember where I saw that even.
LC's Classification Web provides a mapping from LC classifications to
LC subject headings. There is a manual web interface, used mainly by
catalogers, which requires a subscription:
http://classificationweb.net/
I don't know if it has any kind of API.
Keith
On Tue, Oct 18, 2011 at 2:11 PM, Enrico Silterra<[email protected]>
wrote:
is there any way to go from a LC call number,
like DF853 to http://id.loc.gov/authorities/subjects/sh85057107
via some sort of api? opensearch?
thanks,
rick
--
Enrico Silterra Software Engineer
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Voice: 607-255-6851 Fax: 607-255-6110 E-mail: [email protected]
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