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From: Vishwas Goel <vishwasg@gmail.com>
Date: Wed, 26 Dec 2012 10:30:00 +0530
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 <CAK2QSfcco6JCXz_wGV3ro+J32wyP=onarL3g-LLBfrLNceQyoA@mail.gmail.com>
Subject: Re: Retrieving granular scores back from Lucene/SOLR
To: java-user@lucene.apache.org
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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.
Thoughts?

Thanks,
Vishwas


On Wed, Dec 26, 2012 at 10:14 AM, Jack Krupansky <jack@basetechnology.com>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:
> http://lucene.apache.org/core/**4_0_0/core/org/apache/lucene/**
> search/IndexSearcher.html#**explain(org.apache.lucene.**search.Query<http://lucene.apache.org/core/4_0_0/core/org/apache/lucene/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: java-user@lucene.apache.org
> 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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