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From Vishwas Goel <>
Subject Re: Retrieving granular scores back from Lucene/SOLR
Date Wed, 26 Dec 2012 05:00:00 GMT
I thought the reason explain was expensive was because of the string
concats. I actually do not want to store this in strings - i just want the
data without the string concats. I have so far not looked at IndexSearcher
- will do.

Other thought i had was to encode 1 such score in the final score(float
value) itself. That way, i do not need to change the function interface.


On Wed, Dec 26, 2012 at 10:14 AM, Jack Krupansky <>wrote:

> The Explanation tree returned by IndexSearcher#explain is as good as you
> are going to get, but is rather expensive. You are asking for a lot, so you
> should be prepared to pay for it.
> See:
> search/IndexSearcher.html#**explain(org.apache.lucene.**search.Query<>,
> int)
> -- Jack Krupansky
> -----Original Message----- From: Vishwas Goel
> Sent: Tuesday, December 25, 2012 11:30 PM
> To:
> Subject: Retrieving granular scores back from Lucene/SOLR
> Hi,
> I am looking to get a bit more information back from SOLR/Lucene about the
> query/document pair scores. This would include field level scores, overall
> text relevance score, Boost value, BF value etc.
> Information could either be encoded in the score itself that Lucene/Solr
> returns - ideally however i would want to return an array of scores back
> from SOLR/Lucene. I understand that i could work with the debug output -
> but i am looking to do this for the production use case.
> Has anyone explored something like this? Does someone know, where is the
> final score(not just the relevance score) computed?
> Thanks,
> Vishwas
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