Re: [GENERAL] Creation of tsearch2 index is very slow - Mailing list pgsql-performance

From Steinar H. Gunderson
Subject Re: [GENERAL] Creation of tsearch2 index is very slow
Date
Msg-id 20060121000519.GA29755@uio.no
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In response to Re: [GENERAL] Creation of tsearch2 index is very slow  (Tom Lane)
Responses Re: [GENERAL] Creation of tsearch2 index is very slow  (Tom Lane)
List pgsql-performance
On Fri, Jan 20, 2006 at 06:52:37PM -0500, Tom Lane wrote:
> It's also worth considering that the entire approach is a heuristic,
> really --- getting the furthest-apart pair of seeds doesn't guarantee
> an optimal split as far as I can see.  Maybe there's some totally
> different way to do it.

For those of us who don't know what tsearch2/gist is trying to accomplish
here, could you provide some pointers? :-) During my mini-literature-search
on Google, I've found various algorithms for locating clusters in
high-dimensional metric spaces[1]; some of it might be useful, but I might
just be misunderstanding what the real problem is.

[1] http://ieeexplore.ieee.org/iel5/69/30435/01401892.pdf?arnumber=1401892 ,
    for instance

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