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From "Doron Cohen (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (LUCENE-446) search.function - (1) score based on field value, (2) simple score customizability
Date Tue, 05 Jun 2007 16:41:26 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doron Cohen resolved LUCENE-446.
--------------------------------

    Resolution: Fixed

committed (experimental mode).

> search.function - (1) score based on field value, (2) simple score customizability
> ----------------------------------------------------------------------------------
>
>                 Key: LUCENE-446
>                 URL: https://issues.apache.org/jira/browse/LUCENE-446
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Search
>            Reporter: Yonik Seeley
>            Assignee: Doron Cohen
>            Priority: Minor
>             Fix For: 2.2
>
>         Attachments: function.patch.txt, function.patch.txt, function.patch.txt, function.zip,
function.zip
>
>
> FunctionQuery can return a score based on a field's value or on it's ordinal value.
> FunctionFactory subclasses define the details of the function.  There is currently a
LinearFloatFunction (a line specified by slope and intercept).
> Field values are typically obtained from FieldValueSourceFactory.  Implementations include
FloatFieldSource, IntFieldSource, and OrdFieldSource.

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