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https://issues.apache.org/jira/browse/LUCENE-7434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15459221#comment-15459221
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Tim Allison edited comment on LUCENE-7434 at 9/2/16 6:44 PM:
-------------------------------------------------------------
bq. I think that is too strict when more than the required number of subSpans
are actually present in the segment.
Y, you're right, of course. Argh.
{code}
public void testMinShouldMatch5() throws Exception {
// "x l x m x n x o x"
SpanNearQuery q = new SpanNearQuery(new SpanQuery[]{
new SpanTermQuery(new Term(FIELD, "l")), new SpanTermQuery(new
Term(FIELD, "m")), new SpanTermQuery(new Term(FIELD, "o"))
}, 3, true, 2);
Spans spans = q.createWeight(searcher, false,
1f).getSpans(searcher.getIndexReader().leaves().get(0),
SpanWeight.Postings.POSITIONS);
assertFinished(spans);//but there should be a match!
}
{code}
was (Author: talli...@mitre.org):
bq. I think that is too strict when more than the required number of subSpans
are actually present in the segment.
Y, you're right. Argh.
{code}
public void testMinShouldMatch5() throws Exception {
// "x l x m x n x o x"
SpanNearQuery q = new SpanNearQuery(new SpanQuery[]{
new SpanTermQuery(new Term(FIELD, "l")), new SpanTermQuery(new
Term(FIELD, "m")), new SpanTermQuery(new Term(FIELD, "o"))
}, 3, true, 2);
Spans spans = q.createWeight(searcher, false,
1f).getSpans(searcher.getIndexReader().leaves().get(0),
SpanWeight.Postings.POSITIONS);
assertFinished(spans);//but there should be a match!
}
{code}
> 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
>
>
> 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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