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Java example source code file (PopularityWalkerTest.java)
This example Java source code file (PopularityWalkerTest.java) is included in the alvinalexander.com
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Learn more about this Java project at its project page.
The PopularityWalkerTest.java Java example source code
package org.deeplearning4j.models.sequencevectors.graph.walkers.impl;
import org.deeplearning4j.models.sequencevectors.graph.enums.NoEdgeHandling;
import org.deeplearning4j.models.sequencevectors.graph.enums.PopularityMode;
import org.deeplearning4j.models.sequencevectors.graph.enums.SpreadSpectrum;
import org.deeplearning4j.models.sequencevectors.graph.enums.WalkDirection;
import org.deeplearning4j.models.sequencevectors.graph.primitives.Graph;
import org.deeplearning4j.models.sequencevectors.graph.vertex.AbstractVertexFactory;
import org.deeplearning4j.models.sequencevectors.graph.walkers.GraphWalker;
import org.deeplearning4j.models.sequencevectors.sequence.Sequence;
import org.deeplearning4j.models.word2vec.VocabWord;
import org.junit.Before;
import org.junit.Test;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.junit.Assert.*;
/**
* @author raver119@gmail.com
*/
public class PopularityWalkerTest {
private static Graph<VocabWord, Double> graph;
@Before
public void setUp() {
if (graph == null) {
graph = new Graph<VocabWord, Double>(10, false, new AbstractVertexFactory());
for (int i = 0; i < 10; i++) {
graph.getVertex(i).setValue(new VocabWord(i, String.valueOf(i)));
int x = i + 3;
if (x >= 10) x = 0;
graph.addEdge(i, x, 1.0, false);
}
graph.addEdge(0, 4, 1.0, false);
graph.addEdge(0, 4, 1.0, false);
graph.addEdge(0, 4, 1.0, false);
graph.addEdge(4, 5, 1.0, false);
graph.addEdge(1, 3, 1.0, false);
graph.addEdge(9, 7, 1.0, false);
graph.addEdge(5, 6, 1.0, false);
}
}
@Test
public void testPopularityWalkerCreation() throws Exception {
GraphWalker<VocabWord> walker = new PopularityWalker.Builder(graph)
.setWalkDirection(WalkDirection.FORWARD_ONLY)
.setWalkLength(10)
.setNoEdgeHandling(NoEdgeHandling.CUTOFF_ON_DISCONNECTED)
.build();
assertEquals("PopularityWalker", walker.getClass().getSimpleName());
}
@Test
public void testPopularityWalker1() throws Exception {
GraphWalker<VocabWord> walker = new PopularityWalker.Builder(graph)
.setWalkDirection(WalkDirection.FORWARD_ONLY)
.setNoEdgeHandling(NoEdgeHandling.CUTOFF_ON_DISCONNECTED)
.setWalkLength(10)
.setPopularityMode(PopularityMode.MAXIMUM)
.setPopularitySpread(3)
.setSpreadSpectrum(SpreadSpectrum.PLAIN)
.build();
System.out.println("Connected [3] size: " + graph.getConnectedVertices(3).size());
System.out.println("Connected [4] size: " + graph.getConnectedVertices(4).size());
Sequence<VocabWord> sequence = walker.next();
assertEquals("0", sequence.getElements().get(0).getLabel());
System.out.println("Position at 1: [" + sequence.getElements().get(1).getLabel() + "]");
assertTrue(sequence.getElements().get(1).getLabel().equals("4") || sequence.getElements().get(1).getLabel().equals("7") || sequence.getElements().get(1).getLabel().equals("9"));
}
@Test
public void testPopularityWalker2() throws Exception {
GraphWalker<VocabWord> walker = new PopularityWalker.Builder(graph)
.setWalkDirection(WalkDirection.FORWARD_ONLY)
.setNoEdgeHandling(NoEdgeHandling.CUTOFF_ON_DISCONNECTED)
.setWalkLength(10)
.setPopularityMode(PopularityMode.MINIMUM)
.setPopularitySpread(3)
.build();
System.out.println("Connected [3] size: " + graph.getConnectedVertices(3).size());
System.out.println("Connected [4] size: " + graph.getConnectedVertices(4).size());
Sequence<VocabWord> sequence = walker.next();
assertEquals("0", sequence.getElements().get(0).getLabel());
System.out.println("Position at 1: [" + sequence.getElements().get(1).getLabel() + "]");
assertTrue(sequence.getElements().get(1).getLabel().equals("8") || sequence.getElements().get(1).getLabel().equals("3") || sequence.getElements().get(1).getLabel().equals("9") || sequence.getElements().get(1).getLabel().equals("7"));
}
@Test
public void testPopularityWalker3() throws Exception {
GraphWalker<VocabWord> walker = new PopularityWalker.Builder(graph)
.setWalkDirection(WalkDirection.FORWARD_ONLY)
.setNoEdgeHandling(NoEdgeHandling.CUTOFF_ON_DISCONNECTED)
.setWalkLength(10)
.setPopularityMode(PopularityMode.MAXIMUM)
.setPopularitySpread(3)
.setSpreadSpectrum(SpreadSpectrum.PROPORTIONAL)
.build();
System.out.println("Connected [3] size: " + graph.getConnectedVertices(3).size());
System.out.println("Connected [4] size: " + graph.getConnectedVertices(4).size());
AtomicBoolean got4 = new AtomicBoolean(false);
AtomicBoolean got7 = new AtomicBoolean(false);
AtomicBoolean got9 = new AtomicBoolean(false);
for (int i = 0; i < 50; i++) {
Sequence<VocabWord> sequence = walker.next();
assertEquals("0", sequence.getElements().get(0).getLabel());
System.out.println("Position at 1: [" + sequence.getElements().get(1).getLabel() + "]");
got4.compareAndSet(false, sequence.getElements().get(1).getLabel().equals("4"));
got7.compareAndSet(false, sequence.getElements().get(1).getLabel().equals("7"));
got9.compareAndSet(false, sequence.getElements().get(1).getLabel().equals("9"));
assertTrue(sequence.getElements().get(1).getLabel().equals("4") || sequence.getElements().get(1).getLabel().equals("7") || sequence.getElements().get(1).getLabel().equals("9"));
walker.reset(false);
}
assertTrue(got4.get());
assertTrue(got7.get());
assertTrue(got9.get());
}
@Test
public void testPopularityWalker4() throws Exception {
GraphWalker<VocabWord> walker = new PopularityWalker.Builder(graph)
.setWalkDirection(WalkDirection.FORWARD_ONLY)
.setNoEdgeHandling(NoEdgeHandling.CUTOFF_ON_DISCONNECTED)
.setWalkLength(10)
.setPopularityMode(PopularityMode.MINIMUM)
.setPopularitySpread(3)
.setSpreadSpectrum(SpreadSpectrum.PROPORTIONAL)
.build();
System.out.println("Connected [3] size: " + graph.getConnectedVertices(3).size());
System.out.println("Connected [4] size: " + graph.getConnectedVertices(4).size());
AtomicBoolean got3 = new AtomicBoolean(false);
AtomicBoolean got8 = new AtomicBoolean(false);
AtomicBoolean got9 = new AtomicBoolean(false);
for (int i = 0; i < 50; i++) {
Sequence<VocabWord> sequence = walker.next();
assertEquals("0", sequence.getElements().get(0).getLabel());
System.out.println("Position at 1: [" + sequence.getElements().get(1).getLabel() + "]");
got3.compareAndSet(false, sequence.getElements().get(1).getLabel().equals("3"));
got8.compareAndSet(false, sequence.getElements().get(1).getLabel().equals("8"));
got9.compareAndSet(false, sequence.getElements().get(1).getLabel().equals("9"));
assertTrue(sequence.getElements().get(1).getLabel().equals("8") || sequence.getElements().get(1).getLabel().equals("3") || sequence.getElements().get(1).getLabel().equals("9"));
walker.reset(false);
}
assertTrue(got3.get());
assertTrue(got8.get());
assertTrue(got9.get());
}
}
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