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From "Vasia Kalavri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2905) Add intersect method to Graph class
Date Tue, 27 Oct 2015 14:39:27 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976488#comment-14976488

Vasia Kalavri commented on FLINK-2905:

I see what you mean, but I'm a bit confused by Call 1. Since we don't have a unique identifier,
why output both {{1,3,13}} edges in E(G')? Isn't that more like a union? I would see the point
if we could differentiate where each edge came from, but we can't.

> Add intersect method to Graph class
> -----------------------------------
>                 Key: FLINK-2905
>                 URL: https://issues.apache.org/jira/browse/FLINK-2905
>             Project: Flink
>          Issue Type: New Feature
>          Components: Gelly
>    Affects Versions: 0.10
>            Reporter: Martin Junghanns
>            Assignee: Martin Junghanns
>            Priority: Minor
> Currently, the Gelly Graph supports the set operations {{Graph.union(otherGraph)}} and
{{Graph.difference(otherGraph)}}. It would be nice to have a {{Graph.intersect(otherGraph)}}
method, where the resulting graph contains all vertices and edges contained in both input

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