Re: [pgsql-advocacy] Function which gives back the - Mailing list pgsql-novice

From Virgile Beddok
Subject Re: [pgsql-advocacy] Function which gives back the
Date
Msg-id 1343.146.140.8.94.1112027529.squirrel@webmail.igd.fraunhofer.de
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In response to Re: [pgsql-advocacy] Function which gives back the nearest neighbours  (Bruno Wolff III <bruno@wolff.to>)
Responses Re: Function which gives back the
List pgsql-novice
> On Mon, Mar 28, 2005 at 17:52:21 +0200,
>   Virgile Beddok <virgile.beddok@igd.fraunhofer.de> wrote:
>> Thanks for the help.
>> I'll try this for the one-dimensional search.
>> For the muti-dimensional one, which tools of postgresql could I use for
>> this metric function, or this indexable search, which Bruno mentioned.
>> Do they already exist?
>> What about using a tree for that? Is there one which could fit to such a
>> "nearest neighbour search", or do I have to implement it myself...
>
> You could look at boxes or cubes. You haven't said enough about your
> multidimensional problem to give specific answers.
>

I just want to know if there is an existing and implemented function, or
tree, in Postgres which allows me to directly perform a "nearest neighbour
search" on multidimensional vectors.

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