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https://issues.apache.org/jira/browse/LUCENE-4378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13453594#comment-13453594
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Robert Muir commented on LUCENE-4378:
-------------------------------------
Right my problem with that is I think often people that want this don't really
understand the scoring system?
To me it basically boils down to the old problem of scores not really being
comparable.
http://find.searchhub.org/document/f00241f4af0134f8
http://find.searchhub.org/document/2e05678ca2fa9c27
http://find.searchhub.org/document/1461c1221f4c55b0#19b755925b57f641
I'm not going to exclude the possibility that these days you could write a
similarity where something like this
could actually make sense, but I don't know what it would be :)
> QueryParsers do not support negative boosts
> -------------------------------------------
>
> Key: LUCENE-4378
> URL: https://issues.apache.org/jira/browse/LUCENE-4378
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Hoss Man
> Attachments: LUCENE-4378-test.patch
>
>
> Negative query boosts have been supported at the "Query" object level for a
> long time (resulting in negative scores for matching documents), but
> evidently we never updated the QueryParsers to know about this - attempting
> to specify a negative boost in the query string results in a parse error.
> we should probably add this to the parser grammer(s)
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