[jira] Updated: (LUCENE-346) [PATCH] disable coord for generated BooleanQueries

["Doug Cutting (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/LUCENE-346?page=all ]

Doug Cutting updated LUCENE-346:
--------------------------------

    Reporter: Doug Cutting  (was: Doug Cutting - obsolete)

> [PATCH] disable coord for generated BooleanQueries
> --------------------------------------------------
>
>          Key: LUCENE-346
>          URL: http://issues.apache.org/jira/browse/LUCENE-346
>      Project: Lucene - Java
>         Type: Bug

>   Components: Search
>     Versions: unspecified
>  Environment: Operating System: Linux
> Platform: PC
>     Reporter: Doug Cutting
>     Assignee: Lucene Developers
>  Attachments: boolean-coord.patch, boolean-coord.patch
>
> Here's a patch that disables Similiarty.coord() in the scoring of most
> automatically generated boolean queries.  The coord() score factor is
> appropriate when clauses are independently specified by a user, but is usually
> not appropriate when clauses are generated automatically, e.g., by a fuzzy,
> wildcard or range query.  Matches on such automatically generated queries are
> currently penalized for not matching all terms.

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