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https://issues.apache.org/jira/browse/NUTCH-544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12522047
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Dawid Weiss commented on NUTCH-544:
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This parameter is in the code. It is specific to the plugin, not the extension
point, so I didn't add it to nutch-defaults.xml. I'll write the configuration/
process switching info on the Wiki -- I guess it makes more sense to have it
there.
http://wiki.apache.org/nutch/ClusteringPlugin
Switching clustering algorithms isn't very intuitive because they come with
their own JARs and Nutch's plugin system requires all JARs to be explicitly
defined in the plugin's descriptor. I finally decided to go for a workaround --
there is a default clustering algorithm embedded with the clustering plugin
(which uses the Lingo algorithm), if another clustering process is to be used,
all its required classes must be present in classpath (for example by placing
them in the container's shared classes). Worked for me quite well since you
don't have to modify Nutch's WAR at all. As I said, I'll write a longer
explanation of this on the Wiki.
> Upgrade Carrot2 clustering plugin to the newest stable release (2.1)
> --------------------------------------------------------------------
>
> Key: NUTCH-544
> URL: https://issues.apache.org/jira/browse/NUTCH-544
> Project: Nutch
> Issue Type: Improvement
> Reporter: Dawid Weiss
> Priority: Minor
> Attachments: clustering-upgrade-2.1.patch, libs-packed.tar.gz
>
>
> This issue upgrades Carrot2 search results clustering plugin to the newest
> stable version.
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