lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3395) FreqFilteringScorerWrapper and min/max freq options on TermQuery
Date Mon, 22 Aug 2011 19:06:29 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13088936#comment-13088936
] 

Hoss Man commented on LUCENE-3395:
----------------------------------

bq. Because if we hook it straight into this query, then someone will want it in SpanTermQuery,
and PayloadTermQuery, and PhraseQuery, and their own queries???...

They might -- but like i said, i was focused on what seemed like the common/simple case. "make
the common case easy, and the uncommon case 'possible'"

bq. Yes! I think we should make a query that wraps another query to do this? Similar to ConstantScoreQuery?

I'm totally on board with the idea, i just don't really understand what the implementation
should look like -- not because i don't think it's possible, i just don't personally understand
how to write it.  Would the weight of the wrapper query just proxy directly to the inner query
for all of the methods except scorer(..) ?

> FreqFilteringScorerWrapper and min/max freq options on TermQuery
> ----------------------------------------------------------------
>
>                 Key: LUCENE-3395
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3395
>             Project: Lucene - Java
>          Issue Type: New Feature
>            Reporter: Hoss Man
>         Attachments: LUCENE-3395.patch
>
>
> A Solr User was asking about how specify a minimum tf when searching for a term (ie:
documents matching "dog" at least 3 times).
> Based on a conversation with rmuir on IRC, that led me to realize that we now explicitly
expose a general "freq()" method on Scorer, and that min/max freq constraints could be implemented
as a general Scorer Wrapper.
> I propose that we add such a wrapper, and add setMinFreq(float)/setMaxFreq(float) methods
to TermQuery (similar to the minNumShouldMatches and disableCoord type setters in BooleanQuery)
that cause it to be used automatically.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message