Or, use facet.query to get the overlap. Here's ?
q=<query1>&facet=on&facet.query=<query2>
You'll get the hit count from query #1 in the results, and the
overlapping count to query #2 in the facet query response.
Erik - http://www.lucidimagination.com
On Apr 23, 2010, at 11:01 AM, Otis Gospodnetic wrote:
Hello Gert,
I think you'd have to apply custom heuristics that involves looking
at top N hits for each query and looking at the % overlap.
Otis
----
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----- Original Message ----
From: "Villemos, Gert" <gert.ville...@logica.com>
To: solr-user@lucene.apache.org
Sent: Fri, April 23, 2010 10:20:54 AM
Subject: Comparing two queries
We want to support that a user can register for interest in
information,
based on a query he has defined himself. For example that he
type in a
query, press a save button, provides his email and the system will
now
email him with a daily digest.
As part of this, it would
be nice to be able to tell the user that the
same / a similar query are
already being monitored by another user, as
the users will likely have the
same interests. I would therefore like to
evaluate whether two queries will
return (almost) the same set of
results.
But how can I
compare two queries to determine if they will return
(almost) the same set of
results?
Thanks,
Gert.
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