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https://issues.apache.org/jira/browse/LUCENE-1093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553341
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Grant Ingersoll commented on LUCENE-1093:
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Another option would be to introduce something like SpanFrontWeightedQuery or
something like that and leave SFQ alone.
> 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
>
> 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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