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Posted to java-user@lucene.apache.org by sp...@gmx.eu on 2009/03/04 12:42:49 UTC
relevance vs. score
Hi,
When I say: sorted by relevance or sorted by score -
are relevance and score synonym for each other or what is the difference in
relation to sorting?
Thank you
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RE: relevance vs. score
Posted by sp...@gmx.eu.
> It's the similarity scoring formula. EG see here:
>
> http://lucene.apache.org/java/2_4_0/scoring.html
>
> and here:
>
>
> http://lucene.apache.org/java/2_4_0/api/core/org/apache/lucene
> /search/Similarity.html
OK; thank you
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Re: relevance vs. score
Posted by Michael McCandless <lu...@mikemccandless.com>.
It's the similarity scoring formula. EG see here:
http://lucene.apache.org/java/2_4_0/scoring.html
and here:
http://lucene.apache.org/java/2_4_0/api/core/org/apache/lucene/search/Similarity.html
Mike
<sp...@gmx.eu> wrote:
>> I think for "ordinary" Lucene queries, "score" and "relevance" mean
>> the same thing.
>>
>> But if you do eg function queries, or you "mixin" recency into your
>> scoring, etc., then "score" could be anything you computed, a value
>> from a field, etc.
>
> Hm, how is relevance then defined?
>
>
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RE: relevance vs. score
Posted by sp...@gmx.eu.
> I think for "ordinary" Lucene queries, "score" and "relevance" mean
> the same thing.
>
> But if you do eg function queries, or you "mixin" recency into your
> scoring, etc., then "score" could be anything you computed, a value
> from a field, etc.
Hm, how is relevance then defined?
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Re: relevance vs. score
Posted by Michael McCandless <lu...@mikemccandless.com>.
I think for "ordinary" Lucene queries, "score" and "relevance" mean
the same thing.
But if you do eg function queries, or you "mixin" recency into your
scoring, etc., then "score" could be anything you computed, a value
from a field, etc.
Mike
<sp...@gmx.eu> wrote:
> Hi,
>
> When I say: sorted by relevance or sorted by score -
>
> are relevance and score synonym for each other or what is the
> difference in
> relation to sorting?
>
> Thank you
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
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