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From "Dennis Kubes (JIRA)" <>
Subject [jira] Commented: (NUTCH-547) Redirection handling: YahooSlurp's algorithm
Date Wed, 07 Nov 2007 19:22:51 GMT


Dennis Kubes commented on NUTCH-547:

Doğacan, great work on this patch.  I have brought your patch up to the most recent trunk
and tested it.  Works good.  In terms of scoring your patch actually does handle the most
common *scoring* error.  That where we wouldn't store or index the source url for temporary
refreshes (See NUTCH-572).  All unit tests have passed.  I am +1 for committing this ASAP.

> Redirection handling: YahooSlurp's algorithm
> --------------------------------------------
>                 Key: NUTCH-547
>                 URL:
>             Project: Nutch
>          Issue Type: Improvement
>          Components: fetcher
>            Reporter: Doğacan Güney
>             Fix For: 1.0.0
>         Attachments: redirect_draft.patch, redirect_draft_v2.patch
> After reading Yahoo's algorithm (then one Andrzej linked to:
> )
> in the redirect/alias handling discussion, I had a bit of a spare
> time, so I implemented it.
> Note that the patch I am attaching is for the 'choosing' algorithm described in
> Yahoo's help page. It makes no attempt to handle aliases in any way. (See
for the discussion about alias handling).
> E.g,
> generate ""
> fetch "http:/" which redirects to
> "".
> Update second page's datum's metadata to indicate that
> "" is the representative form.
> Updatedb, invertlinks, etc...
> While indexing second page, change its "url" field to
> "".

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