Java example source code file (Word2VecIteratorTest.java)

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Java - Java tags/keywords

arraylist, before, classpathresource, exception, file, indarray, labelawarefilesentenceiterator, test, uimatokenizerfactory, util, word2vecdatasetiterator, word2veciteratortest

The Word2VecIteratorTest.java Java example source code

/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    Licensed 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.deeplearning4j.models.word2vec.iterator;

import org.canova.api.util.ClassPathResource;
import org.deeplearning4j.models.embeddings.WeightLookupTable;
import org.deeplearning4j.models.embeddings.inmemory.InMemoryLookupTable;
import org.deeplearning4j.models.embeddings.wordvectors.WordVectors;
import org.deeplearning4j.models.word2vec.Word2Vec;
import org.deeplearning4j.models.word2vec.wordstore.inmemory.InMemoryLookupCache;
import org.deeplearning4j.text.sentenceiterator.SentenceIterator;
import org.deeplearning4j.text.sentenceiterator.UimaSentenceIterator;
import org.deeplearning4j.text.sentenceiterator.labelaware.LabelAwareFileSentenceIterator;
import org.deeplearning4j.text.tokenization.tokenizerfactory.TokenizerFactory;
import org.deeplearning4j.text.tokenization.tokenizerfactory.UimaTokenizerFactory;
import org.junit.Before;
import org.junit.Test;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.dataset.DataSet;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;

import static org.junit.Assert.assertNotEquals;

/**
 * Created by agibsonccc on 3/5/15.
 */
public class Word2VecIteratorTest {
    private Word2Vec vec;

    @Before
    public void before() throws Exception {
        if(vec == null) {
            ClassPathResource resource = new ClassPathResource("/labeled/");
            File file = resource.getFile();
            SentenceIterator iter = UimaSentenceIterator.createWithPath(file.getAbsolutePath());
            new File("cache.ser").delete();

            TokenizerFactory t = new UimaTokenizerFactory();

            vec = new Word2Vec.Builder()
                    .minWordFrequency(1).iterations(5)
                    .layerSize(100)
                    .stopWords(new ArrayList<String>())
                    .useUnknown(true)
                    .windowSize(5).iterate(iter).tokenizerFactory(t).build();
            vec.fit();

        }
    }

    @Test
    public void testLabeledExample() throws Exception {

        INDArray unk = vec.getWordVectorMatrix(Word2Vec.DEFAULT_UNK);
        assertNotEquals(null, unk);

        unk = vec.getWordVectorMatrix("2131241sdasdas");
        assertNotEquals(null, unk);

        Word2VecDataSetIterator iter = new Word2VecDataSetIterator(vec,new LabelAwareFileSentenceIterator(null, new ClassPathResource("labeled/").getFile()), Arrays.asList("negative","positive","neutral"));
        DataSet next = iter.next();

    }

}