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https://issues.apache.org/jira/browse/GIRAPH-480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13615445#comment-13615445
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Sebastian Schelter commented on GIRAPH-480:
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Oh, I forgot to resolve this issue :)
You can look at the patch in reviewboard: https://reviews.apache.org/r/9850/
> Add convergence detection to org.apache.giraph.examples.RandomWalkVertex
> ------------------------------------------------------------------------
>
> Key: GIRAPH-480
> URL: https://issues.apache.org/jira/browse/GIRAPH-480
> Project: Giraph
> Issue Type: Improvement
> Components: examples
> Affects Versions: 0.2.0
> Reporter: Sebastian Schelter
> Assignee: Sebastian Schelter
>
> I propose to add convergence detection to the RandomWalkVertex. Convergence
> is achieved when the overall absolute change (L1 norm) of the difference
> between the current and the previous probability vector becomes less than a
> given threshold. Convergence detection can be implemented via an additional
> aggregator and a check in the master compute function.
> This change would make the class much easier to use as the users don't have
> to worry about the number of supersteps to execute, but can simply specify a
> high number as MAX_SUPERSTEPS and be sure that the algorithm convergences
> when acceptable quality of the result is reached.
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