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RE: Example of coordination with DDC

From: Aida Slavic <aida@acorweb.net>
Date: Thu, 3 Aug 2006 15:53:39 +0100
To: <public-esw-thes@w3.org>


>There has been a discussion about qualifiers in July 2005

I will look into this. If rules of synthesis from
different systems can be reduced to a reasonable level
this is only good news.

>By whom? I only know the paper of Riesthuis from 1996. We have
>successfully reproduced Liu's results but it was a lot of work
>to come so far.

Yes, it's Gerhard Rieshtuis did PhD on this (University of Amsterdam)
it's in in Dutch - published as a book as they usually do with
Algorithms (8 groups of them) and procedure are fully explained there.
Program is written in Pascal. The reason why he did that
is to be able to link words to constituent parts of the notation
and enable searching UDC using words hence the title
Zoeken met woorden.

>But librarians create DDC numbers according to the rules and put them
>into catalouges as a whole it is very complicated to split them afterwords.

Maybe with DDC. This is usually so in Anglo-American library tradition where
classification is used for shelf arrangement mainly.
In 41 of European countries where UDC is used (in 20 it is the main
classification system)libraries tend to rely on classification in information
exchange to overcome language and script differences (e.g. Belgium, Switzerland,
Russian Federation, former Czechoslovakia, Yugoslavia etc.)
UDC is also used in abstracting and documentation services for very detailed
indexing of scientific literature.
Good library systems use classification authority file to enrich, link to words,
search and browse UDC. In this way classification
does not always have to be shown to users - it is mainly used to underpin and
control semantic relationships in IR. It's a simple relational db approach.
These authority files are usually shared between libraries in a single network
or wider.

I recently did research of interface functionalities in searching UDC in
30 OPACS (20 countries) - both vendor and inhouse systems. You would be
surprised how sophisticated some of them are.



RIESTHUIS, G. J. A.  (1997) "Decomposition of complex UDC notation", Knowledge organization for information retrieval : proceedings
of the Sixth International Study Conference on Classification Research, London, 16-18 June 1997. The Hague : FID, 1997. (FID 716),

RIESTHUIS, G. J. A.  (1998) "Decomposition of UDC-numbers and the text of the UDC Master Reference File", Structures and relations
in knowledge organization : proceedings of the Fifth International ISKO Conference, Lille, 25-29 August 1998. Edited by W. Mustafa
Elhadi, J. Maniez, S. Pollitt. Würzburg : Ergon Verlag, 1998. (Advances in knowledge organization 6), 221-228.

RIESTHUIS, G. J. A.  (1998b) Zoeken met woorden. [doctoral thesis]. Amsterdam : Leerstoelgroep Boek-, Archief- en
Informatiewetenschap, 1998. (BBI-reeks nr 6).

RIESTHUIS, G. J. A.  (1999) "Searching with words : re-use of subject indexing", Extensions & Corrections to the UDC, 21 1999,
Received on Thursday, 3 August 2006 14:52:55 UTC

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