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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-446) FunctionQuery - score based on field value
Date Wed, 30 Nov 2005 17:52:36 GMT
     [ http://issues.apache.org/jira/browse/LUCENE-446?page=all ]

Yonik Seeley updated LUCENE-446:
--------------------------------

    Attachment:     (was: FunctionFactory.java)

> FunctionQuery - score based on field value
> ------------------------------------------
>
>          Key: LUCENE-446
>          URL: http://issues.apache.org/jira/browse/LUCENE-446
>      Project: Lucene - Java
>         Type: New Feature
>   Components: Search
>     Versions: 1.9
>     Reporter: Yonik Seeley
>  Attachments: FunctionInst.java, FunctionQuery.java, IntFieldSource.java, LinearFloatFunction.java,
OrdFieldSource.java, ReciprocalFloatFunction.java, ReverseOrdFieldSource.java
>
> 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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