Re: tsearch comments

Hi,

I guess what we're looking for is something on the order (as much as I
hate using it as a reference) of MySQL's full text search which does
offer some ranking.

Just putting ranking alone in tsearch would be a huge benefit. Users can
then decide in their own language how to display results, especially
since those results may not necessarily require titles or description
fragments.

For example, we have several huge tables that have the following
columns:

> id
> tbltype
> title
> description

Basically, our customer will lookup words that are contained in title
and description, so we make an additional table like:

> id
> tblid (id of the source table)
> tblsource (which table)
> content (txtidx)

Then we can use tsearch to search the second table (we do now), and once
we retrieve the id's that we want, we can display results from one or
more source tables. Just putting in ranking in tsearch would solve all
these problems.

- Ericson Smith
http://www.did-it.com
http://www.weightlossfriends.com

On Tue, 2003-01-28 at 14:00, Oleg Bartunov wrote:
> On Tue, 28 Jan 2003, Uros Gruber wrote:
>
> > Hi!
> >
> > I think that this would be nice. OpenFTS is great, but i would
> > be great if this would be implement in real pg functions.
> >
> > I think that indexim would be great if pg make it by itself.
> >
> > Also it could be great if we could define order of weight of
> > columns.
>
> Could you elaborate this ?
>
> >
> > bye Uros
> >
> > I
> > On 28.01.2003 at 11:53:26, Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>
> > wrote:
> >
> > > On Tue, 28 Jan 2003 sector119(at)mail(dot)ru wrote:
> > >
> > > > HI
> > > >
> > > > will we see sort by relevance at tsearch alpha version? :)
> > > >
> > >
> > > not sure. We concentrate our efforts, well, Teodor is working
> > > on
> > > better configurability of tsearch like OpenFTS does.
> > >
> > > It\\\'s not difficult to add rather naive relevance based on
> > > position
> > > of lexem in document, for example. The question is do you
> > like
> > > such
> > > kind of relevancy ? Real ranking support (as in OpenFTS)
> > > require
> > > separate tables to maintain coordinate information.
> > > We want to keep tsearch as simple as it\\\'s and now we just
> > add
> > > better and friendly configurability. Do we need complicate
> > > tsearch ?
> > > We already have OpenFTS which has most features people
> > > requested.
> > >
> >
> >
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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/
> phone: +007(095)939-16-83, +007(095)939-23-83
>
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