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From "Eli Reisman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-191) Random Walks on Graphs
Date Mon, 10 Sep 2012 17:43:08 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13452174#comment-13452174
] 

Eli Reisman commented on GIRAPH-191:
------------------------------------

I can try to take a look at this too if Avery is busy, sorry about the delay I have been moving...

                
> Random Walks on Graphs
> ----------------------
>
>                 Key: GIRAPH-191
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-191
>             Project: Giraph
>          Issue Type: New Feature
>          Components: examples
>    Affects Versions: 0.2.0
>            Reporter: Gianmarco De Francisci Morales
>            Assignee: Gianmarco De Francisci Morales
>         Attachments: GIRAPH-191-1.patch, GIRAPH-191.2.patch, GIRAPH-191.3.patch, GIRAPH-191.patch
>
>
> Implementing RWR on Giraph should be a very simple modification of the SimplePageRankVertex
code.
> {code}
> if ( myID == sourceID )
>       DoubleWritable vertexValue = new DoubleWritable((0.15f + 0.85f * sum);
> else
>       DoubleWritable vertexValue = new DoubleWritable(0.85f * sum);
> {code}
> It would be nice to make it as configurable as possible by using parametric damping factors,
preference vectors, strongly preferential, etc...
> More or less along these lines:
> http://law.dsi.unimi.it/software/docs/it/unimi/dsi/law/rank/PageRank.html

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