Hi!
ts2test=# select * from ts_debug('Jeden Tag wird man ein bisschen weiser');
ts_name | tok_type | description | token | dict_name | tsvector
----------------+----------+-------------+----------+-------------+------------
default_german | lword | Latin word | Jeden | {de_ispell} |
default_german | lword | Latin word | Tag | {de_ispell} | 'tag'
default_german | lword | Latin word | wird | {de_ispell} |
default_german | lword | Latin word | man | {de_ispell} |
default_german | lword | Latin word | ein | {de_ispell} | 'eint'
default_german | lword | Latin word | bisschen | {de_ispell} | 'bisschen'
default_german | lword | Latin word | weiser | {de_ispell} | 'weise'
(7 rows)
cat german.stop|grep ^ein$
ein
'jeden', 'man', 'wird' and 'ein' are all in german.stop; the first three words are
correctly recognozed as stopwords, whereas the last one is converted to 'eint',
although 'ein' is a stopword, too. I still don't understand what exactly is happening
and if I should be concerned by that sort of "wrong guess" - so 'ein' is just
converted to 'eint' every time, no matter if it's in the stopwords-file or not, but on
the other hand, as this applies to to_tsvector(), to_tsquery() and lexize(), this
behaviour would be consitant throughout tsearch2 - thus making any search containing
'ein' a little bit fuzzier, but nonetheless still usable. It's still some sort of
cosmetic bug, though, but I guess that's probably due to German being somewhat less
IT-friendly than english.
Kind regards
Markus
-----Original Message-----
From: Oleg Bartunov [mailto:[EMAIL PROTECTED]
Sent: Wed 7/21/2004 22:24
To: Markus Wollny
Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Re: AW: [OpenFTS-general] AW: [GENERAL] tsearch2, ispell, utf-8 and
german special characters
On Wed, 21 Jul 2004, Markus Wollny wrote:
>
> Hi!
>
> > -----Urspr?ngliche Nachricht-----
> > Von: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] Im
> > Auftrag von Markus Wollny
> > Gesendet: Mittwoch, 21. Juli 2004 17:04
> > An: Oleg Bartunov
> > Cc: [EMAIL PROTECTED];
> > [EMAIL PROTECTED]
> > Betreff: [OpenFTS-general] AW: [GENERAL] tsearch2, ispell,
> > utf-8 and german special characters
>
> > The issue with the unrecognized stop-word 'ein' which is
> > converted by to_tsvector to 'eint' remains however. Now
> > here's as much detail as I can provide:
> >
> > Ispell is Version 3.1.20 10/10/95, patch 1.
>
> I've just upgraded Ispell to the latest version (International Ispell Version 3.2.06
> 08/01/01), but that didn't help; by now I think it might be something to do with a
> german language peculiarity or with something in the german dictionary. In
> german.med, there is an entry
ispell itself don't used in tsearch2, only dict,aff files !
>
> eint/EGPVWX
>
> So the ts_vector output is just a bit like a wrong guess. Doesn't it evaluate the
> stopword-list first before doing the lookup in the Ispell-dictionary?
yes. There is very usefull function for debugging I always recommend to use -
ts_debug. See my notes
(http://www.sai.msu.su/~megera/oddmuse/index.cgi/Tsearch_V2_Notes)
for examples.
>
> Kind regards
>
> Markus Wollny
>
>
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Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: [EMAIL PROTECTED], http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83
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