What does Sort.RELEVANCE do?

[Teruhiko Kurosaka <Ku...@basistech.com>]

I can specify Sort.RELEVANCE to Searcher.search as in:

hits = searcher.search(q, Sort.RELEVANCE); // Using deprecated method to
make it short

What is the real effect of specifying the Sort argument like this?

Does Sort.RELEVANCE sorts the hits in order of the score
shown in Sect. 3.3 "Understanding Lucene scoring"
of Lucene In Action? If I use the search method without
a sort argument, is it equivalent of specifying
Sort.INDEXORDER?

----
T. "Kuro" Kurosaka, Basis Technology
San Francisco, California, U.S.A.
 

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Re: What does Sort.RELEVANCE do?

[Michael McCandless <lu...@mikemccandless.com>]

Section 5.1.2 of LIA also explains this.

Sort.RELEVANCE sorts by relevance score, descending, breaking ties by  
sorting by doc ID, ascending, and s the default if you don't specify a  
sort order.

Sort.INDEXORDER sorts only by doc ID, which is not the default sort.

Mike

Teruhiko Kurosaka wrote:

> I can specify Sort.RELEVANCE to Searcher.search as in:
>
> hits = searcher.search(q, Sort.RELEVANCE); // Using deprecated  
> method to
> make it short
>
> What is the real effect of specifying the Sort argument like this?
>
> Does Sort.RELEVANCE sorts the hits in order of the score
> shown in Sect. 3.3 "Understanding Lucene scoring"
> of Lucene In Action? If I use the search method without
> a sort argument, is it equivalent of specifying
> Sort.INDEXORDER?
>
> ----
> T. "Kuro" Kurosaka, Basis Technology
> San Francisco, California, U.S.A.
>
>
> ---------------------------------------------------------------------
> 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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