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From ristretto.rb <ristretto...@gmail.com>
Subject Filtering results
Date Tue, 16 Sep 2008 20:13:17 GMT
Hello All,

I'm looking for a way to filter results by some ranking mechanism.
For example...

Suppose you have 30 docs in an index, and they are in groups of 10, like this

A, 1
A, 2
:
A, 10

B, 1
B, 2
:
B, 10

C, 1
C, 2
:
C, 10

I would like to get 3 records back such that I get a single,  "best",
result from each logical group.
So, if I searched with a term that would match all the docs in the
index, I could be certain to get
a doc with A in it, one with B in it and one with C in it.

The the moment, I have a solr index that has a category field, and the
index will have between 1 and 2 million results
when we are done indexing.

I'm going to spend some time today researching this.  If anyone can
send me some advice, I would be grateful.

I've considered post processing the results, but I'm not sure if this
is the wisest plan.  And, I don't know how I would accurate
result counts, to do pagination.

cheers

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