Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/1980#discussion_r63951105
--- Diff:
flink-libraries/flink-gelly-examples/src/main/java/org/apache/flink/graph/examples/JaccardIndex.java
---
@@ -0,0 +1,132 @@
+/*
+ * 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.examples;
+
+import org.apache.commons.math3.random.JDKRandomGenerator;
+import org.apache.flink.api.common.JobExecutionResult;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.java.io.CsvOutputFormat;
+import org.apache.flink.api.java.utils.DataSetUtils;
+import org.apache.flink.api.java.utils.ParameterTool;
+import org.apache.flink.graph.Graph;
+import org.apache.flink.graph.asm.translate.LongValueToIntValue;
+import org.apache.flink.graph.asm.translate.TranslateGraphIds;
+import org.apache.flink.graph.generator.RMatGraph;
+import org.apache.flink.graph.generator.random.JDKRandomGeneratorFactory;
+import org.apache.flink.graph.generator.random.RandomGenerableFactory;
+import org.apache.flink.types.IntValue;
+import org.apache.flink.types.LongValue;
+import org.apache.flink.types.NullValue;
+
+import java.text.NumberFormat;
+
+/**
+ * Driver for the library implementation of Jaccard Index.
+ *
+ * This example generates an undirected RMat graph with the given scale and
+ * edge factor then calculates all non-zero Jaccard Index similarity scores
+ * between vertices.
+ *
+ * @see org.apache.flink.graph.library.similarity.JaccardIndex
+ */
+public class JaccardIndex {
+
+ public static final int DEFAULT_SCALE = 10;
+
+ public static final int DEFAULT_EDGE_FACTOR = 16;
+
+ public static final boolean DEFAULT_CLIP_AND_FLIP = true;
+
+ public static void main(String[] args) throws Exception {
+ // Set up the execution environment
+ final ExecutionEnvironment env =
ExecutionEnvironment.getExecutionEnvironment();
+ env.getConfig().enableObjectReuse();
+
+ ParameterTool parameters = ParameterTool.fromArgs(args);
+
+ // Generate RMat graph
+ int scale = parameters.getInt("scale", DEFAULT_SCALE);
+ int edgeFactor = parameters.getInt("edge_factor",
DEFAULT_EDGE_FACTOR);
+
+ RandomGenerableFactory<JDKRandomGenerator> rnd = new
JDKRandomGeneratorFactory();
+
+ long vertexCount = 1L << scale;
+ long edgeCount = vertexCount * edgeFactor;
+
+ boolean clipAndFlip = parameters.getBoolean("clip_and_flip",
DEFAULT_CLIP_AND_FLIP);
+
+ Graph<LongValue, NullValue, NullValue> graph = new
RMatGraph<>(env, rnd, vertexCount, edgeCount)
+ .setSimpleGraph(true, clipAndFlip)
+ .generate();
+
+ DataSet js;
+
+ if (scale > 32) {
+ js = graph
+ .run(new
org.apache.flink.graph.library.similarity.JaccardIndex<LongValue, NullValue,
NullValue>());
+ } else {
+ js = graph
+ .run(new TranslateGraphIds<LongValue, IntValue,
NullValue, NullValue>(new LongValueToIntValue()))
+ .run(new
org.apache.flink.graph.library.similarity.JaccardIndex<IntValue, NullValue,
NullValue>());
+ }
+
+ switch (parameters.get("output", "")) {
--- End diff --
Is the usage statement sufficient?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
