Sorry. I was a over sensitive about the idea that I didn't know LCC
from LCSH. Apparently I was using an ambiguous term. The perils of the
autodidact!
Related to using library data statistically:
I made a rather recommendation system combining data from LCC, DDC and
LCSH and employing the data statistically. At root, it recommends as
similar works with the same data. But it's not binary. It counts two
data points (eg., two shared LCSHs or a shared LCSH and a shared DDC)
as worth more than one, and treats the systems as continua (LCC, DDC)
and as hierarches (LCC, DDC, LCSH). So, shelf-proximity and shared
"parent" levels count for something too. It's not as good as
LibraryThing's "people who have X also have Y," but it's pretty good
and kicks up some nice serendipity. And, again, any library can do it.
http://www.librarything.com/blog/2007/01/books-with-similar-library-subjects_08.php
Tim
On 2/5/07, Karen Coyle <kcoyle_at_kcoyle.net> wrote:
> Tim Spalding wrote:
> > Two detailed replies.
> >
> > Karen,
> >
> >> Tim, in part I think at one point you confuse LCSH and LC
> >> Classification. LC Classification shelves things in a single place; LCSH
> >> allows multiple subject headings to be added to a record.
> >
> > While I appreciate your comments, I am quite sure I was not confusing
> > them. The blog post explicitly contrasts shelf-order systems like LCC
> > and Dewey (as used 99% of the time) with subject systems like LCSH
> > which allows multiple headings per book.
> Sorry, I misunderstood. I think it was your reference to "subject
> classification" to which I applied a different definition. There's an
> old debate in library catalogs about "classified catalogs" (those in
> something like Dewey or LCC order) vs. "dictionary catalogs" (like those
> using LCSH). In any case, we shouldn't be bound by shelf location for
> EITHER, as Diane pointed out.
>
> kc
>
> --
> -----------------------------------
> Karen Coyle / Digital Library Consultant
> kcoyle@kcoyle.net http://www.kcoyle.net
> ph.: 510-540-7596
> fx.: 510-848-3913
> mo.: 510-435-8234
> ------------------------------------
>
Received on Mon Feb 05 2007 - 19:55:07 EST