I suppose it would be helpful to actually know the problem that is
trying to be solved here (I mean, a lot of people, including myself,
are throwing out solutions to a problem that's never been actually
Ethan, what, exactly, are you trying to do? Do you want authorized
headings? Or do you want LCSH that appears in the wild?
On Tue, Dec 8, 2009 at 10:35 AM, Ed Summers <[log in to unmask]> wrote:
> On Tue, Dec 8, 2009 at 10:16 AM, Karen Coyle <[log in to unmask]> wrote:
>> Couple of things: first, what we have at id.loc.gov is NOT LCSH, but a copy
>> of the LC subject authority file. The entries in this file form the basis
>> for subject headings, most of which add "facets" to the authority entry when
>> forming the subject heading. One could do a left-anchored match against
>> actual headings, and that might provide some interesting statistics.
> Yes, using the actual headings extracted from bibliographic data seems
> to be a better approach. It's easier to rank them, and as Karen points
> out you get the actual post-coordinated headings, not just the
> headings LC has decided to establish authority records for.