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Posted to dev@lucene.apache.org by "Alan Woodward (JIRA)" <ji...@apache.org> on 2019/01/23 14:36:00 UTC
[jira] [Resolved] (LUCENE-8630) Allow boosting of particular
interval sources
[ https://issues.apache.org/jira/browse/LUCENE-8630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alan Woodward resolved LUCENE-8630.
-----------------------------------
Resolution: Won't Fix
Jim and I discussed this offline, and we came to the conclusion that boosting sub-intervals isn't going to be deterministic enough to be useful. Things like synonym-boosting or payload boosting should be done via BooleanQuery, with Interval query used as a proximity boost or filter.
> Allow boosting of particular interval sources
> ---------------------------------------------
>
> Key: LUCENE-8630
> URL: https://issues.apache.org/jira/browse/LUCENE-8630
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Attachments: LUCENE-8630.patch, LUCENE-8630.patch
>
>
> In positional queries, it's common to want to promote some terms over others; for example, in lists of synonyms you may want the original term to be weighted more, or more specific terms to receive higher weights than less specific ones.
> Span queries have the 'SpanBoostQuery', which is currently broken; and a 'PayloadScoreQuery' which allows direct modification of the score based on stored payloads, but which does not deal well with a mix of terms with-and-without payloads, and which ends up exposing a lot of the terms API, making it very difficult to customize.
> For interval queries, I'd like to try a different approach, adding a float-valued 'boost()' method to IntervalIterator. This would make it easy to add simple boosts around particular terms in terms lists, and also allow more fine-grained control using payloads without having to expose the mechanics of the PostingsEnum
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