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Java example source code file (VocabConstructorTest.java)
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The VocabConstructorTest.java Java example source code
package org.deeplearning4j.models.word2vec.wordstore;
import org.canova.api.util.ClassPathResource;
import org.deeplearning4j.models.sequencevectors.interfaces.SequenceIterator;
import org.deeplearning4j.models.sequencevectors.iterators.AbstractSequenceIterator;
import org.deeplearning4j.models.sequencevectors.sequence.Sequence;
import org.deeplearning4j.models.sequencevectors.transformers.impl.SentenceTransformer;
import org.deeplearning4j.models.word2vec.VocabWord;
import org.deeplearning4j.models.word2vec.wordstore.inmemory.AbstractCache;
import org.deeplearning4j.text.documentiterator.FileLabelAwareIterator;
import org.deeplearning4j.text.sentenceiterator.BasicLineIterator;
import org.deeplearning4j.text.sentenceiterator.SentenceIterator;
import org.deeplearning4j.text.tokenization.tokenizer.Tokenizer;
import org.deeplearning4j.text.tokenization.tokenizer.preprocessor.CommonPreprocessor;
import org.deeplearning4j.text.tokenization.tokenizerfactory.DefaultTokenizerFactory;
import org.deeplearning4j.text.tokenization.tokenizerfactory.TokenizerFactory;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.util.*;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.junit.Assert.*;
/**
* @author raver119@gmail.com
*/
public class VocabConstructorTest {
protected static final Logger log = LoggerFactory.getLogger(VocabConstructorTest.class);
TokenizerFactory t = new DefaultTokenizerFactory();
@Before
public void setUp() throws Exception {
t.setTokenPreProcessor(new CommonPreprocessor());
}
@Test
public void testVocab() throws Exception {
File inputFile = new ClassPathResource("big/raw_sentences.txt").getFile();
SentenceIterator iter = new BasicLineIterator(inputFile);
Set<String> set = new HashSet<>();
int lines = 0;
int cnt = 0;
while (iter.hasNext()) {
Tokenizer tok = t.create(iter.nextSentence());
for (String token: tok.getTokens()) {
if (token == null || token.isEmpty() || token.trim().isEmpty()) continue;
cnt++;
if (!set.contains(token))
set.add(token);
}
lines++;
}
log.info("Total number of tokens: [" + cnt + "], lines: [" + lines+"], set size: ["+ set.size() +"]");
log.info("Set:\n" + set);
}
@Test
public void testBuildJointVocabulary1() throws Exception {
File inputFile = new ClassPathResource("big/raw_sentences.txt").getFile();
SentenceIterator iter = new BasicLineIterator(inputFile);
VocabCache<VocabWord> cache = new AbstractCache.Builder().build();
SentenceTransformer transformer = new SentenceTransformer.Builder()
.iterator(iter)
.tokenizerFactory(t)
.build();
/*
And we pack that transformer into AbstractSequenceIterator
*/
AbstractSequenceIterator<VocabWord> sequenceIterator = new AbstractSequenceIterator.Builder(transformer)
.build();
VocabConstructor<VocabWord> constructor = new VocabConstructor.Builder()
.addSource(sequenceIterator, 0)
.useAdaGrad(false)
.setTargetVocabCache(cache)
.build();
constructor.buildJointVocabulary(true, false);
assertEquals(244, cache.numWords());
assertEquals(0, cache.totalWordOccurrences());
}
@Test
public void testBuildJointVocabulary2() throws Exception {
File inputFile = new ClassPathResource("big/raw_sentences.txt").getFile();
SentenceIterator iter = new BasicLineIterator(inputFile);
VocabCache<VocabWord> cache = new AbstractCache.Builder().build();
SentenceTransformer transformer = new SentenceTransformer.Builder()
.iterator(iter)
.tokenizerFactory(t)
.build();
AbstractSequenceIterator<VocabWord> sequenceIterator = new AbstractSequenceIterator.Builder(transformer)
.build();
VocabConstructor<VocabWord> constructor = new VocabConstructor.Builder()
.addSource(sequenceIterator, 5)
.useAdaGrad(false)
.setTargetVocabCache(cache)
.build();
constructor.buildJointVocabulary(false, true);
// assertFalse(cache.hasToken("including"));
assertEquals(242, cache.numWords());
assertEquals("i", cache.wordAtIndex(1));
assertEquals("it", cache.wordAtIndex(0));
assertEquals(634303, cache.totalWordOccurrences());
}
@Test
public void testCounter1() throws Exception {
VocabCache<VocabWord> vocabCache = new AbstractCache.Builder().build();
final List<VocabWord> words = new ArrayList<>();
words.add(new VocabWord(1, "word"));
words.add(new VocabWord(2, "test"));
words.add(new VocabWord(1, "here"));
Iterable<Sequence iterable = new Iterable>() {
@Override
public Iterator<Sequence iterator() {
return new Iterator<Sequence() {
private AtomicBoolean switcher = new AtomicBoolean(true);
@Override
public boolean hasNext() {
return switcher.getAndSet(false);
}
@Override
public Sequence<VocabWord> next() {
Sequence<VocabWord> sequence = new Sequence<>(words);
return sequence;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
};
};
SequenceIterator<VocabWord> sequenceIterator = new AbstractSequenceIterator.Builder<>(iterable).build();
VocabConstructor<VocabWord> constructor = new VocabConstructor.Builder()
.addSource(sequenceIterator, 0)
.useAdaGrad(false)
.setTargetVocabCache(vocabCache)
.build();
constructor.buildJointVocabulary(false, true);
assertEquals(3, vocabCache.numWords());
assertEquals(1, vocabCache.wordFrequency("test"));
}
@Test
public void testCounter2() throws Exception {
VocabCache<VocabWord> vocabCache = new AbstractCache.Builder().build();
final List<VocabWord> words = new ArrayList<>();
words.add(new VocabWord(1, "word"));
words.add(new VocabWord(0, "test"));
words.add(new VocabWord(1, "here"));
Iterable<Sequence iterable = new Iterable>() {
@Override
public Iterator<Sequence iterator() {
return new Iterator<Sequence() {
private AtomicBoolean switcher = new AtomicBoolean(true);
@Override
public boolean hasNext() {
return switcher.getAndSet(false);
}
@Override
public Sequence<VocabWord> next() {
Sequence<VocabWord> sequence = new Sequence<>(words);
return sequence;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
};
};
SequenceIterator<VocabWord> sequenceIterator = new AbstractSequenceIterator.Builder<>(iterable).build();
VocabConstructor<VocabWord> constructor = new VocabConstructor.Builder()
.addSource(sequenceIterator, 0)
.useAdaGrad(false)
.setTargetVocabCache(vocabCache)
.build();
constructor.buildJointVocabulary(false, true);
assertEquals(3, vocabCache.numWords());
assertEquals(1, vocabCache.wordFrequency("test"));
}
/**
* Here we test basic vocab transfer, done WITHOUT labels
* @throws Exception
*/
@Test
public void testMergedVocab1() throws Exception {
AbstractCache<VocabWord> cacheSource = new AbstractCache.Builder()
.build();
AbstractCache<VocabWord> cacheTarget = new AbstractCache.Builder()
.build();
ClassPathResource resource = new ClassPathResource("big/raw_sentences.txt");
BasicLineIterator underlyingIterator = new BasicLineIterator(resource.getFile());
SentenceTransformer transformer = new SentenceTransformer.Builder()
.iterator(underlyingIterator)
.tokenizerFactory(t)
.build();
AbstractSequenceIterator<VocabWord> sequenceIterator = new AbstractSequenceIterator.Builder(transformer)
.build();
VocabConstructor<VocabWord> vocabConstructor = new VocabConstructor.Builder()
.addSource(sequenceIterator, 1)
.setTargetVocabCache(cacheSource)
.build();
vocabConstructor.buildJointVocabulary(false, true);
int sourceSize = cacheSource.numWords();
log.info("Source Vocab size: " + sourceSize);
VocabConstructor<VocabWord> vocabTransfer = new VocabConstructor.Builder()
.addSource(sequenceIterator, 1)
.setTargetVocabCache(cacheTarget)
.build();
vocabTransfer.buildMergedVocabulary(cacheSource, false);
assertEquals(sourceSize, cacheTarget.numWords());
}
@Test
public void testMergedVocabWithLabels1() throws Exception {
AbstractCache<VocabWord> cacheSource = new AbstractCache.Builder()
.build();
AbstractCache<VocabWord> cacheTarget = new AbstractCache.Builder()
.build();
ClassPathResource resource = new ClassPathResource("big/raw_sentences.txt");
BasicLineIterator underlyingIterator = new BasicLineIterator(resource.getFile());
SentenceTransformer transformer = new SentenceTransformer.Builder()
.iterator(underlyingIterator)
.tokenizerFactory(t)
.build();
AbstractSequenceIterator<VocabWord> sequenceIterator = new AbstractSequenceIterator.Builder(transformer)
.build();
VocabConstructor<VocabWord> vocabConstructor = new VocabConstructor.Builder()
.addSource(sequenceIterator, 1)
.setTargetVocabCache(cacheSource)
.build();
vocabConstructor.buildJointVocabulary(false, true);
int sourceSize = cacheSource.numWords();
log.info("Source Vocab size: " + sourceSize);
FileLabelAwareIterator labelAwareIterator = new FileLabelAwareIterator.Builder()
.addSourceFolder(new ClassPathResource("/paravec/labeled").getFile())
.build();
transformer = new SentenceTransformer.Builder()
.iterator(labelAwareIterator)
.tokenizerFactory(t)
.build();
sequenceIterator = new AbstractSequenceIterator.Builder<VocabWord>(transformer)
.build();
VocabConstructor<VocabWord> vocabTransfer = new VocabConstructor.Builder()
.addSource(sequenceIterator, 1)
.setTargetVocabCache(cacheTarget)
.build();
vocabTransfer.buildMergedVocabulary(cacheSource, true);
// those +3 go for 3 additional entries in target VocabCache: labels
assertEquals(sourceSize + 3, cacheTarget.numWords());
// now we check index equality for transferred elements
assertEquals(cacheSource.wordAtIndex(17), cacheTarget.wordAtIndex(17));
assertEquals(cacheSource.wordAtIndex(45), cacheTarget.wordAtIndex(45));
assertEquals(cacheSource.wordAtIndex(89), cacheTarget.wordAtIndex(89));
// we check that newly added labels have indexes beyond the VocabCache index space
// please note, we need >= since the indexes are zero-based, and sourceSize is not
assertTrue(cacheTarget.indexOf("Zfinance") > sourceSize - 1);
assertTrue(cacheTarget.indexOf("Zscience") > sourceSize - 1);
assertTrue(cacheTarget.indexOf("Zhealth") > sourceSize - 1);
}
}
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