[ http://issues.apache.org/jira/browse/NUTCH-336?page=all ]
Andrzej Bialecki closed NUTCH-336.
-----------------------------------
Fix Version/s: 0.8.1
0.9.0
Resolution: Fixed
Patch applied to branch-0.8 and trunk. Thanks!
> Harvested links shouldn't get db.score.injected in addition to inbound
> contributions
> ------------------------------------------------------------------------------------
>
> Key: NUTCH-336
> URL: http://issues.apache.org/jira/browse/NUTCH-336
> Project: Nutch
> Issue Type: Bug
> Components: fetcher
> Affects Versions: 0.8
> Reporter: Chris Schneider
> Priority: Critical
> Fix For: 0.8.1, 0.9.0
>
> Attachments: NUTCH-336.patch.txt
>
>
> Currently (even with Stefan's fix for NUTCH-324), harvested links have their
> initial scores set to db.score.injected + (sum of inbound contributions *
> db.score.link.[internal | external]), but this will place (at least external)
> harvested links even higher than injected URLs on the fetch list. Perhaps
> more importantly, this effect cascades.
> As a simple example, if each page in A->B->C->D has exactly one external link
> and only A is injected, then D will receive an initial score of at least
> (4*db.score.injected) with the default db.score.link.external of 1.0. Higher
> values of db.score.injected and db.score.link.external obviously exacerbate
> this problem.
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