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From "Andrzej Bialecki (JIRA)" <j...@apache.org>
Subject [jira] Updated: (NUTCH-240) Scoring API: extension point, scoring filters and an OPIC plugin
Date Mon, 03 Apr 2006 15:06:02 GMT
     [ http://issues.apache.org/jira/browse/NUTCH-240?page=all ]

Andrzej Bialecki  updated NUTCH-240:
------------------------------------

    Attachment: patch1.txt

Updated patch, includes the Generator.patch.txt. Changes:

* reduce creationf of new Objects in CrawlDbReducer

* simplify API by removing the need to set/restore score value in Generator.

> Scoring API: extension point, scoring filters and an OPIC plugin
> ----------------------------------------------------------------
>
>          Key: NUTCH-240
>          URL: http://issues.apache.org/jira/browse/NUTCH-240
>      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
scoring.

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