I am going to integrate subject headings into an XForms application.  I can
work with the authorized headings.  Before taking the XML file that LC
provides and doing my own thing with Solr, I wanted to see if anyone had
used the headings to do their own type of autosuggest.  I was especially
interested if anyone had done it with data provided dynamically by a service
that may or may not have existed on LC.  A Solr index that I populate with
data I download today becomes static, my interest is how I (or other people
developing their own autosuggest systems based on the subject headings) can
pull updates of the master authority XML file into my index of terms.

Ethan

On Tue, Dec 8, 2009 at 10:42 AM, Ross Singer <[log in to unmask]> wrote:

> 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
> defined).
>
> Ethan, what, exactly, are you trying to do?  Do you want authorized
> headings?  Or do you want LCSH that appears in the wild?
>
> -Ross.
>
> 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.
> >
> > //Ed
> >
>