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From "Doug Cutting (JIRA)" <>
Subject [jira] Commented: (NUTCH-240) Scoring API: extension point, scoring filters and an OPIC plugin
Date Mon, 03 Apr 2006 17:59:44 GMT
    [ ] 

Doug Cutting commented on NUTCH-240:

Also, note that we can now extend Hadoop's new MapReduceBase to implement configure() and
close() for many Mappers and Reducers, including the one's in this patch.

> Scoring API: extension point, scoring filters and an OPIC plugin
> ----------------------------------------------------------------
>          Key: NUTCH-240
>          URL:
>      Project: Nutch
>         Type: Improvement

>     Versions: 0.8-dev
>     Reporter: Andrzej Bialecki 
>     Assignee: Andrzej Bialecki 
>  Attachments: Generator.patch.txt, patch.txt, patch1.txt
> This patch refactors all places where Nutch manipulates page scores, into a plugin-based
API. Using this API it's possible to implement different scoring algorithms. It is also much
easier to understand how scoring works.
> Multiple scoring plugins can be run in sequence, in a manner similar to URLFilters.
> Included is also an OPICScoringFilter plugin, which contains the current implementation
of the scoring algorithm. Together with the scoring API it provides a fully backward-compatible

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