[Koha-devel] Linking bibs to authorities

[Fridolyn SOMERS]

Hie,

It is because in Zebra, exact search does not work.
It can find a phrase (all words in same order) but not say if this 
phrase fits the entire (sub)field. This is the purpose of PQF attribut 
6, but is does not work.
So when linking bibs to authorities, linker will match more authorities 
than needed. For example, in biblio record "History" will match 
authorities with headings "History", "History of art", "History of 
science", ...

That is wy I created Bug 9072 : 
http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=9072

Le 02/08/2013 17:32, Ian Bays a écrit :
> Hi.
> I mentioned we also have a problem with linking bibs to authorities.
>
> We use authorities and want to link them to bibs.  Over previous
> versions of Koha this has sometimes worked quite well.  However on a few
> systems we have at version 3.12 it seems that the Zebra search into the
> authorities (used by link_bib_to_authorities) is returning all terms
> that contain any of the words in the bib field.
>
> So if the linkage is set to "default" then most authority searches will
> return multiple answers which means they do not link.
> If the linkage syspref is set to first or last then most of the bibs
> will link to the wrong authority as it is pot luck which will be first
> (or last) of the many authorities found by searching all the words ORed
> together.
> The only terms that will link are single-word authorities that are not
> used in any other authorities.
>
> If anyone has any pointers or knows how to get round or over this
> problem I would love to hear from you.  More details on request...
>
> We are using Zebra dom indexing and icu chains and are using Koha 3.12
> on Debian.  We are not yet using QueryParser.  Sysprefs and Help > About
> are here:
>
> Sysprefs are:
>
> +--------------------------+-------+
> | variable                 | value |
> +--------------------------+-------+
> | IncludeSeeFromInSearches | 0     |
> | QueryAutoTruncate        | 0     |
> | QueryFuzzy               | 0     |
> | QueryStemming            | 0     |
> | QueryWeightFields        | 1     |
> | TraceCompleteSubfields   | 0     |
> | TraceSubjectSubdivisions | 0     |
> | UseICU                   | 1     |
> | UseQueryParser           | 0     |
> +--------------------------+-------+
>
>
> Koha> About:
>
> Koha version:     3.12.01.000
> OS version ('uname -a'):     Linux dclg.koha.ptfsadmin.uk0.bigv.io
> 3.2.0-4-amd64 #1 SMP Debian 3.2.46-1 x86_64 GNU/Linux
> Perl interpreter:     /usr/bin/perl
> Perl version:     5.014002
> Perl @INC:     /home/koha/kohaclone
> /etc/perl
> /usr/local/lib/perl/5.14.2
> /usr/local/share/perl/5.14.2
> /usr/lib/perl5
> /usr/share/perl5
> /usr/lib/perl/5.14
> /usr/share/perl/5.14
> /usr/local/lib/site_perl
> .
> MySQL version:     mysql Ver 14.14 Distrib 5.5.31, for debian-linux-gnu
> (x86_64) using readline 6.2
> Apache version:     Server version: Apache/2.2.22 (Debian)
> Zebra version:     Zebra 2.0.55 (C) 1994-2013, Index Data ApS Zebra is
> free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain
> conditions. SHA1 ID: bd2bc9360225e695bbaba2c2d1cd6925c4eb23a5 Using ICU
>
> Many thanks folks.
> Ian
>
>

-- 
Fridolyn SOMERS
Biblibre - Pôle support
fridolyn.somers at biblibre.com