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https://issues.apache.org/jira/browse/LUCENE-1093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Elschot updated LUCENE-1093:
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Attachment: SpanFirst20071219.patch
This 20071219 patch adds a private flag and a constructor for this flag to
SpanFirstQuery. The flag indicates whether the start of the resulting Spans
should be zero or default to the start of the given spans.
ant -Dtestcase='Test*Span*' test-core
passes independent of whether or not this flag is set by default, so some more
tests are needed.
> SpanFirstQuery modification to aid term boosting based on position.
> -------------------------------------------------------------------
>
> Key: LUCENE-1093
> URL: https://issues.apache.org/jira/browse/LUCENE-1093
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Query/Scoring
> Reporter: Peter Keegan
> Attachments: SpanFirst20071219.patch
>
>
> This is a request for a modification to SpanFirstQuery that would allow term
> boosting based on a term's distance from the beginning of the document.
> This modification to SpanFirstQuery would be that the Spans returned by
> SpanFirstQuery.getSpans() must always return 0 from its start() method. Then
> the slop passed to sloppyFreq(slop) would be the distance from the beginning
> of the indexed field to the end of the Spans of the SpanQuery passed to
> SpanFirstQuery.
> Here is the discussion behind this issue:
> http://www.nabble.com/Can-I-do-boosting-based-on-term-postions--to11939423.html#a11939423
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