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Posted to java-user@lucene.apache.org by SK R <rs...@gmail.com> on 2007/03/27 08:49:27 UTC
what's the use of proximity data?
Hi,
Please clarify my doubts.
What's the use of storing proximity data internally while indexing? Is
it only for score calculation or any other additional purpose?
How lucene handles phrase query? Whether it's depend on proximity data
of phrase terms or any other?
Thanks & Regards
RSK
Re: what's the use of proximity data?
Posted by karl wettin <ka...@gmail.com>.
27 mar 2007 kl. 09.33 skrev SK R:
> Hi,
> I'm speaking about term positions.
> In Lucene File Format, the .prx file contains the lists of
> positions
> that each term occurs at within documents.
> I asked what's the purpose of this .prx file?
It is generally used for phrase/span queries.
> Also how phrasequery handled?
If the matching terms are within slop distance, the query is a match.
Or what do you ask here?
Slop and distance can affect the score. For exact meachanism see
PhraseScorerer.java, SloppyPhraseScorer.java or await a better answer
from someone else :)
--
karl
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Re: what's the use of proximity data?
Posted by SK R <rs...@gmail.com>.
Hi,
I'm speaking about term positions.
In Lucene File Format, the .prx file contains the lists of positions
that each term occurs at within documents.
I asked what's the purpose of this .prx file?
Also how phrasequery handled?
Thanks & Regards
RSK
On 3/27/07, karl wettin <ka...@gmail.com> wrote:
>
>
> 27 mar 2007 kl. 08.49 skrev SK R:
>
> > Hi,
> > Please clarify my doubts.
> > What's the use of storing proximity data internally while
> > indexing? Is
> > it only for score calculation or any other additional purpose?
> > How lucene handles phrase query? Whether it's depend on
> > proximity data
> > of phrase terms or any other?
>
> Do you speak of term offsets or term positions?
>
> --
> karl
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>
Re: what's the use of proximity data?
Posted by karl wettin <ka...@gmail.com>.
27 mar 2007 kl. 08.49 skrev SK R:
> Hi,
> Please clarify my doubts.
> What's the use of storing proximity data internally while
> indexing? Is
> it only for score calculation or any other additional purpose?
> How lucene handles phrase query? Whether it's depend on
> proximity data
> of phrase terms or any other?
Do you speak of term offsets or term positions?
--
karl
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