[jira] [Commented] (FLINK-3925) GraphAlgorithm to filter by maximum degree

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-3925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15318625#comment-15318625 ] 

ASF GitHub Bot commented on FLINK-3925:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/flink/pull/2005


> GraphAlgorithm to filter by maximum degree
> ------------------------------------------
>
>                 Key: FLINK-3925
>                 URL: https://issues.apache.org/jira/browse/FLINK-3925
>             Project: Flink
>          Issue Type: New Feature
>          Components: Gelly
>    Affects Versions: 1.1.0
>            Reporter: Greg Hogan
>            Assignee: Greg Hogan
>            Priority: Minor
>             Fix For: 1.1.0
>
>
> Filtering by minimum degree is K-Core which is iterative. Filtering by maximum degree can be performed in constant time by filtering the set of high-degree vertices then doing an anti-join against the original vertex set and two anti-joins against the original edge set.
> Two reasons to remove high-degree vertices: 1) they may simply be noise in the input data, and 2) speedup algorithms such as Adamic-Adar and Jaccard Index which run quadratic in the vertex degree.



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