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Move HITSAlgorithm to gelly examples
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83
...ries/flink-gelly/src/test/java/org/apache/flink/graph/library/link_analysis/HITSTest.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,83 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.flink.graph.library.link_analysis; | ||
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| import org.apache.flink.api.java.DataSet; | ||
| import org.apache.flink.api.java.Utils.ChecksumHashCode; | ||
| import org.apache.flink.api.java.utils.DataSetUtils; | ||
| import org.apache.flink.graph.asm.AsmTestBase; | ||
| import org.apache.flink.graph.library.link_analysis.HITS.Result; | ||
| import org.apache.flink.test.util.TestBaseUtils; | ||
| import org.apache.flink.types.IntValue; | ||
| import org.apache.flink.types.LongValue; | ||
| import org.apache.flink.types.NullValue; | ||
| import org.junit.Test; | ||
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| import java.util.List; | ||
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| import static org.junit.Assert.assertEquals; | ||
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| public class HITSTest | ||
| extends AsmTestBase { | ||
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| @Test | ||
| public void testWithSimpleGraph() | ||
| throws Exception { | ||
| DataSet<Result<IntValue>> hits = new HITS<IntValue, NullValue, NullValue>(10) | ||
| .run(directedSimpleGraph); | ||
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| String expectedResult = | ||
| "(0,(0.5446287864731747,0.0))\n" + | ||
| "(1,(0.0,0.8363240238999012))\n" + | ||
| "(2,(0.6072453524686667,0.26848532437604833))\n" + | ||
| "(3,(0.5446287864731747,0.39546603929699625))\n" + | ||
| "(4,(0.0,0.26848532437604833))\n" + | ||
| "(5,(0.194966796646811,0.0))"; | ||
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| TestBaseUtils.compareResultAsText(hits.collect(), expectedResult); | ||
| } | ||
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| @Test | ||
| public void testWithCompleteGraph() | ||
| throws Exception { | ||
| double expectedScore = 1.0 / Math.sqrt(completeGraphVertexCount); | ||
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| DataSet<Result<LongValue>> hits = new HITS<LongValue, NullValue, NullValue>(0.000001) | ||
| .run(completeGraph); | ||
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| List<Result<LongValue>> results = hits.collect(); | ||
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| assertEquals(completeGraphVertexCount, results.size()); | ||
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| for (Result<LongValue> result : results) { | ||
| assertEquals(expectedScore, result.getHubScore().getValue(), 0.000001); | ||
| assertEquals(expectedScore, result.getAuthorityScore().getValue(), 0.000001); | ||
| } | ||
| } | ||
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| @Test | ||
| public void testWithRMatGraph() | ||
| throws Exception { | ||
| ChecksumHashCode checksum = DataSetUtils.checksumHashCode(directedRMatGraph | ||
| .run(new HITS<LongValue, NullValue, NullValue>(0.000001))); | ||
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| assertEquals(902, checksum.getCount()); | ||
| assertEquals(0x000001cbba6dbcd0L, checksum.getChecksum()); | ||
| } | ||
| } |