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From "Mikhail Khludnev (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7434) Add minNumberShouldMatch parameter to SpanNearQuery
Date Fri, 09 Sep 2016 07:14:21 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15476173#comment-15476173
] 

Mikhail Khludnev commented on LUCENE-7434:
------------------------------------------

The most intriguing question about {{TermAutomatonQuery}} is its' efficiency. Can it load
term positions only for those docs which passed term level minShouldMatch condition? eg if
someone can experiment, it would be great to search with this query on a huge index and then
compare it to to the same query intersected with minShouldMatch disjunction with plain term
queries. Will the later speedups TAQ by faster dragging?   

> Add minNumberShouldMatch parameter to SpanNearQuery
> ---------------------------------------------------
>
>                 Key: LUCENE-7434
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7434
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>            Reporter: Tim Allison
>            Priority: Minor
>         Attachments: AllPairsNearSpans20160902.patch, FSA for repeating words.PNG, TestMinShouldMatchSpan.java,
TestMinShouldMatchSpan.java, a b c d e f mm=3.PNG, a b c d e f mm=3.PNG
>
>
> On the user list, [~saar32] asked about a new type of SpanQuery that would allow for
something like BooleanQuery's minimumNumberShouldMatch
> bq. Given a set of search terms (t1, t2, t3, ti), return all documents where in a sequence
of x=10 tokens at least c=3 of the search terms appear within the sequence.
> I _think_ we can modify SpanNearQuery fairly easily to accommodate this.  I'll submit
a PR in the next few days.



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