I previously wrote:
|Tim Spalding wrote:
||I made an ISBN feed, so libraries could compare their holdings with
||LibraryThing
|
|I've downloaded your file to compare with our public library's
|333,000-record bib database, not all of which have ISBNs. (It'll take
|a while, though--I've got a lot of other things on my plate, too.)
Well (after filtering out microforms, maps, pamphlets, magazines, and
equipment), here are the results for ADULT materials *only*:
[The first line would be read something like this:
145650 (56.6%) of the 257475 ISBNs that our library has in the given
category (in this case, "grand total") matched ISBNs in LibraryThing's
ISBN list]
=====================================================
NUMBER OF ISBNs THAT MATCHED LibraryThing's ISBN LIST
=====================================================
Matches Items Percent
GRAND TOTAL: 145650 257475 56.6
Book: 139410 216657 64.3
Nonbook: 6240 40818 15.3
Book subtotals:
FICTION TOTAL: 31948 39755 80.4
Fiction: 19537 23969 81.5
Mystery: 7928 10296 77.0
SciFi: 2873 2941 97.7
Western: 281 864 32.5
Gen pbk fic: 472 611 77.3
Romances: 857 1074 79.8
NONFIC TOTAL: 83592 124348 67.2
000's: 2350 3080 76.3
100's: 3504 4753 73.7
200's: 4870 5906 82.5
300's: 11535 19047 60.6
400's: 1142 1460 78.2
500's: 3114 4308 72.3
600's: 18688 29770 62.8
700's: 14331 21615 66.3
800's: 6573 10014 65.6
900's: 11113 16369 67.9
Biographies: 6372 8026 79.4
=====================================================
As I mentioned, I've got other things going on, too, so it may be a week
or two before I can post YOUTH results, unless you don't want/need those
results because of the nature of LT's ISBN list. By the way, these
breakdowns are pretty easy on our system because we created a
5-character positional code (LOCATION) in every item, based primarily on
formats and DDC/genres. I massaged the output of our III system to
eventually (after comparing against LT) come up with a file where each
entry had the form "xxxxxiiiiiiiiii n"--x is the positional code, i is
the ISBN, and n is 1 or 0, depending on whether that ISBN was found (via
a binary search) in LT's sorted ISBN list or not. By using VBS's
regular expression object in an OCLC Connexion OML (VBA-like) macro, I
can do counts on the file using a pattern match on the 5-character codes
and summing the 0/1 results of matching LibraryThing's ISBN list.
I hope these results are interesting and useful!
Harvey
--
===========================================
Harvey E. Hahn, Manager, Technical Services Department
Arlington Heights (Illinois) Memorial Library
847/506-2644 - FX: 847/506-2650 - Email: hhahn(at)ahml(dot)info
OML & Scripts web pages: http://www.ahml.info/oml/
Personal web pages: http://users.anet.com/~packrat
Received on Tue Mar 06 2007 - 13:43:43 EST