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Subject: [jira] [Commented] (FLINK-2254) Add Bipartite Graph Support for
 Gelly
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archived-at: Tue, 04 Oct 2016 15:20:22 -0000


    [ https://issues.apache.org/jira/browse/FLINK-2254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15545636#comment-15545636 ] 

ASF GitHub Bot commented on FLINK-2254:
---------------------------------------

Github user greghogan commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2564#discussion_r81777101
  
    --- Diff: flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/BipartiteEdge.java ---
    @@ -0,0 +1,69 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.flink.graph;
    +
    +import org.apache.flink.api.java.tuple.Tuple3;
    +
    +/**
    + *
    + * A BipartiteEdge represents a link between a top and bottom vertices
    + * in a {@link BipartiteGraph}. It is similar to the {@link Edge} class
    + * with the only difference that key of connected vertices can have
    + * different types.
    + *
    + * @param <TK> the key type of the top vertices
    + * @param <BK> the key type of the bottom vertices
    + * @param <EV> the edge value type
    + */
    +public class BipartiteEdge<TK, BK, EV> extends Tuple3<TK, BK, EV> {
    +
    +	private static final long serialVersionUID = 1L;
    +
    +	public BipartiteEdge(){}
    --- End diff --
    
    Extra space for `() {}`.


> Add Bipartite Graph Support for Gelly
> -------------------------------------
>
>                 Key: FLINK-2254
>                 URL: https://issues.apache.org/jira/browse/FLINK-2254
>             Project: Flink
>          Issue Type: New Feature
>          Components: Gelly
>    Affects Versions: 0.10.0
>            Reporter: Andra Lungu
>            Assignee: Ivan Mushketyk
>              Labels: requires-design-doc
>
> A bipartite graph is a graph for which the set of vertices can be divided into two disjoint sets such that each edge having a source vertex in the first set, will have a target vertex in the second set. We would like to support efficient operations for this type of graphs along with a set of metrics(http://jponnela.com/web_documents/twomode.pdf). 



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