Re: TSearch2: Problems with compound words and stop words

On Fri, 5 Nov 2004, Timo Haberkern wrote:

> Oleg,
>
> i use TSearch2 with PostgreSQL 7.4.6 and i applied the compoundword patch
> yesterday. The configuration changed a little bit but the result is the same.
> I get no compound words. I'm using the locale de_DE with encoding ISO8859-1
> for the database.
>
> I think i spell is working correctly except the compound words. If i try
>
> SELECT lexize('de_ispell', 'springt')
>
> i get
>
> lexize
> {springen,springen}
>
> which seems correct.
>
>
> But a SELECT lexize('de_ispell', 'Autobahn')
>
> results in
>
> lexize
> {autobahn}
>
> i would expect {auto,bahn, autobahn}

Hmm, have you checked 'Autobahn' in ispell dictionary ? Does dictionary
you used supports 'Z' flag for compound words ?


>
> The new configuration after the compound word patch:
>

Seems you overestimate my capabilities :)


>
> Actions     dict_name
>
<http://www.rotex-service.com/phppgadmin/display.php?database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=2&sortdir=asc&strings=expanded&page=1>

> dict_init
>
<http://www.rotex-service.com/phppgadmin/display.php?database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=3&sortdir=asc&strings=expanded&page=1>

> dict_initoption
>
<http://www.rotex-service.com/phppgadmin/display.php?database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=4&sortdir=asc&strings=expanded&page=1>

> dict_lexize
>
<http://www.rotex-service.com/phppgadmin/display.php?database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=5&sortdir=asc&strings=expanded&page=1>

> dict_comment
>
<http://www.rotex-service.com/phppgadmin/display.php?database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=6&sortdir=asc&strings=expanded&page=1>

> Edit
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confeditrow&strings=expanded&page=1&key%5Bdict_name%5D=simple&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> Delete
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confdelrow&strings=expanded&page=1&key%5Bdict_name%5D=simple&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> simple     dex_init(text)     /NULL/     dex_lexize(internal,internal,integer) Simple
> example of dictionary.
> Edit
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confeditrow&strings=expanded&page=1&key%5Bdict_name%5D=en_stem&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> Delete
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confdelrow&strings=expanded&page=1&key%5Bdict_name%5D=en_stem&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> en_stem     snb_en_init(text) /usr/local/pgsql/share/contrib/english.stop
> snb_lexize(internal,internal,integer)     English Stemmer. Snowball.
> Edit
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confeditrow&strings=expanded&page=1&key%5Bdict_name%5D=ru_stem&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> Delete
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confdelrow&strings=expanded&page=1&key%5Bdict_name%5D=ru_stem&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> ru_stem     snb_ru_init(text) /usr/local/pgsql/share/contrib/russian.stop
> snb_lexize(internal,internal,integer)     Russian Stemmer. Snowball.
> Edit
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confeditrow&strings=expanded&page=1&key%5Bdict_name%5D=ispell_template&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> Delete
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confdelrow&strings=expanded&page=1&key%5Bdict_name%5D=ispell_template&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> ispell_template     spell_init(text)     /NULL/
> spell_lexize(internal,internal,integer)     ISpell interface. Must have
> .dict and .aff files
> Edit
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confeditrow&strings=expanded&page=1&key%5Bdict_name%5D=synonym&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> Delete
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confdelrow&strings=expanded&page=1&key%5Bdict_name%5D=synonym&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> synonym     syn_init(text)     /NULL/ syn_lexize(internal,internal,integer)
> Example of synonym dictionary
> Edit
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confeditrow&strings=expanded&page=1&key%5Bdict_name%5D=de_ispell&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> Delete
>
<http://www.rotex-service.com/phppgadmin/display.php?action=confdelrow&strings=expanded&page=1&key%5Bdict_name%5D=de_ispell&database=selina_rotex&schema=public&table=pg_ts_dict&return_url=tblproperties.php%3Fdatabase%3Dselina_rotex%26amp%3Bschema%3Dpublic%26table%3Dpg_ts_dict&return_desc=Back&sortkey=&sortdir=>

> de_ispell     spell_init(text)
> DictFile="/usr/local/pgsql/share/contrib/dictonary/german_comb.dict",
> AffFile="/usr/local/pgsql/share/contrib/dictonary/german_comb.aff",
> StopFile="/usr/local/pgsql/share/contrib/dictonary/german.stop"
> spell_lexize(internal,internal,integer)     /NULL/
>
>
>
> Timo
>
>
> Oleg Bartunov wrote:
>
>> Timo,
>>
>> please, check you apply patch for compound word support.
>> What is version of postgresql ?
>> Does ispell dict works for non-compound words ?
>>
>>     Oleg
>>
>> On Fri, 5 Nov 2004, Timo Haberkern wrote:
>>
>>> Hi there,
>>>
>>> i have some troubles with my TSearch2 Installation. I have done this
>>> installation as described in
>>> http://www.sai.msu.su/~megera/oddmuse/index.cgi/Tsearch_V2_compound_words
>>> <http://www.sai.msu.su/%7Emegera/oddmuse/index.cgi/Tsearch_V2_compound_words>
>>>
>>> I used the german myspell dictionary from
>>> http://lingucomponent.openoffice.org/spell_dic.html and converted it with
>>> my2ispell
>>>
>>> Nearly everything is working fine so far, except two problems:
>>>
>>> 1.) The stopword-file seems to be ignored: If i try it with SELECT
>>> to_tsvector("default_german", "ein Haus") i get     "ein":1 "haus":2
>>>
>>> ein should be a Stopword for german (and is defined the german.stop file
>>> as
>>> well)
>>>
>>> 2.) The compound words feature doesn"t work too. I have tried a lot of
>>> words,
>>> i.e. "Fehlermeldung" with SELECT to_tsvector("default_german",
>>> "Fehlermeldung")
>>> i only get
>>> "fehlermeldung":1 but i would expect "fehler" and "meldung" as seperated
>>> entries. Is there anything wrong with the dictonary or my configuration?
>>>
>>>
>>> My current configuration:
>>>
>>> pg_ts_cfg:
>>>
>>> default    default    C
>>> default_russian    default    ru_RU.KOI8-R
>>> simple    default    NULL
>>> default_german    default    de_DE.ISO8859-1
>>>     pg_ts_cfgmap:
>>>
>>> default_german    host    {simple}
>>> default_german    hword    {simple}
>>> default_german    int    {simple}
>>> default_german    nlhword    {simple}
>>> default_german    nlpart_hword    {simple}
>>> default_german    nlword    {simple}
>>> default_german    part_hword    {simple}
>>> default_german    sfloat    {simple}
>>> default_german    uint    {simple}
>>> default_german    uri    {simple}
>>> default_german    url    {simple}
>>> default_german    version    {simple}
>>> default_german    word    {simple}
>>> default_german    lpart_hword    {de_ispell,german_snowball}
>>> default_german    lword    {de_ispell,german_snowball}
>>> default_german    lhword    {de_ispell,german_snowball}
>>>
>>>
>>> pg_ts_dict:
>>>
>>> de_ispell | 17166    |
>>> DictFile="/usr/local/pgsql/share/contrib/dictonary/german.dict",
>>> AffFile="/usr/local/pgsql/share/contrib/dictonary/german.aff",
>>> StopFile="/usr/local/pgsql/share/contrib/dictonary/german.stop"    | 17167
>>> | NULL
>>> german_snowball    | 17357 | NULL    | 17162 | Snowball stemmer for german
>>>
>>>
>>>
>>> Can anyone help me?
>>>
>>> regards
>>>
>>> Timo
>>>
>>>
>>> ---------------------------(end of broadcast)---------------------------
>>> TIP 4: Don't 'kill -9' the postmaster
>>>
>>
>>     Regards,
>>         Oleg
>> _____________________________________________________________
>> Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
>> Sternberg Astronomical Institute, Moscow University (Russia)
>> Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
>> phone: +007(095)939-16-83, +007(095)939-23-83
>>
>> ---------------------------(end of broadcast)---------------------------
>> TIP 2: you can get off all lists at once with the unregister command
>>    (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
>>
>>
>

     Regards,
         Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83