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From vasia <...@git.apache.org>
Subject [GitHub] flink pull request #2053: [FLINK-1707] Affinity Propagation
Date Tue, 21 Jun 2016 13:37:32 GMT
Github user vasia commented on a diff in the pull request:

    --- Diff: flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/library/AffinityPropagation.java
    @@ -0,0 +1,535 @@
    + * 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.library;
    +import org.apache.flink.api.common.aggregators.LongSumAggregator;
    +import org.apache.flink.api.common.functions.FilterFunction;
    +import org.apache.flink.api.common.functions.MapFunction;
    +import org.apache.flink.api.java.DataSet;
    +import org.apache.flink.api.java.tuple.Tuple2;
    +import org.apache.flink.graph.EdgeDirection;
    +import org.apache.flink.graph.Graph;
    +import org.apache.flink.graph.GraphAlgorithm;
    +import org.apache.flink.graph.Vertex;
    +import org.apache.flink.graph.Edge;
    +import org.apache.flink.graph.EdgesFunction;
    +import org.apache.flink.graph.spargel.MessageIterator;
    +import org.apache.flink.graph.spargel.MessagingFunction;
    +import org.apache.flink.graph.spargel.ScatterGatherConfiguration;
    +import org.apache.flink.graph.spargel.VertexUpdateFunction;
    +import org.apache.flink.types.LongValue;
    +import org.apache.flink.types.NullValue;
    +import org.apache.flink.util.Collector;
    +import java.util.ArrayList;
    +import java.util.Iterator;
    +import java.util.List;
    +import java.util.Map;
    +import java.util.HashMap;
    + * This is an implementation of the Binary Affinity Propagation algorithm using a scatter-gather
    + * Note that is not the original Affinity Propagation.
    + *
    + * The input is an undirected graph where the vertices are the points to be clustered
and the edge weights are the
    + * similarities of these points among them.
    + *
    + * The output is a Dataset of Tuple2, where f0 is the point id and f1 is the exemplar,
so the clusters will be the
    --- End diff --
    What are the expected types of the points and the similarities?

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