Re: Tsearch2 lexeme position

On Thu, 12 May 2005, Peter Schmelzer wrote:

> Hi,
>
> this is an answer of thread
> http://archives.postgresql.org/pgsql-general/2003-08/msg00694.php
>
> You say it exist a funktion to fin positions an frequency of lexems for own
> calculate of an ranking since this time.
> But where is the description of this?
> May Im to blind but I spend a lot of time to search in internet for this.
>
> http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/docs/tsearch-V2-intro.html
> http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/docs/tsearch2-guide.html
> http://www.sai.msu.su/~megera/postgres/gist/tsearch/V2/docs/tsearch2-ref.html
> has to less examples to see it.
> May it is'nt in?..
>
> I need it to serch terms with more than one lexem and later for an ranking
> for nearst lexems.

ranking functions is already aware of this. See tsearch2.sql in
contrib/tsearch2/sql for examples. We don't have API to specify your own
ranking function. Do you really need it ?

>
> greeds
> Peter Schmelzer
>
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>

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
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