Re: Can tsearch do some basic text mining - Mailing list pgsql-general

On Fri, 24 Aug 2007, Phoenix Kiula wrote:

> Hi,
>
> We have big blobs of text (average 10,000 characters) in a database,
> from which we would like to discover the most often repeated words or
> phrases. Can tsearch be used for this kind of pattern search? I
> suppose it's Text Mining 101 sort of stuff, nothing complex.

there is stat() function, see
http://www.sai.msu.su/~megera/wiki/Tsearch_V2_Notes
for more details.
It's not fast, so better to save results in a table

>
> TIA!
>
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     Regards,
         Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83