Examples with JavaSparkContext org.apache.spark.api.java.JavaSparkContext used on opensource projects

Example 31 with JavaSparkContext

use of org.apache.spark.api.java.JavaSparkContext in project deeplearning4j by deeplearning4j.

the class TextPipeline method setup.

private void setup() {
    // Set up accumulators and broadcast stopwords
    this.sc = new JavaSparkContext(corpusRDD.context());
    this.wordFreqAcc = sc.accumulator(new Counter<String>(), new WordFreqAccumulator());
    this.stopWordBroadCast = sc.broadcast(stopWords);
}

Example 32 with JavaSparkContext

use of org.apache.spark.api.java.JavaSparkContext in project deeplearning4j by deeplearning4j.

the class Word2VecTest method testSparkW2VonBiggerCorpus.

@Ignore
@Test
public void testSparkW2VonBiggerCorpus() throws Exception {
    SparkConf sparkConf = new SparkConf().setMaster("local[8]").setAppName("sparktest").set("spark.driver.maxResultSize", "4g").set("spark.driver.memory", "8g").set("spark.executor.memory", "8g");
    // Set SparkContext
    JavaSparkContext sc = new JavaSparkContext(sparkConf);
    // Path of data part-00000
    //String dataPath = new ClassPathResource("/big/raw_sentences.txt").getFile().getAbsolutePath();
    //        String dataPath = "/ext/Temp/SampleRussianCorpus.txt";
    String dataPath = new ClassPathResource("spark_word2vec_test.txt").getFile().getAbsolutePath();
    // Read in data
    JavaRDD<String> corpus = sc.textFile(dataPath);
    TokenizerFactory t = new DefaultTokenizerFactory();
    t.setTokenPreProcessor(new LowCasePreProcessor());
    Word2Vec word2Vec = new Word2Vec.Builder().setNGrams(1).tokenizerFactory(t).seed(42L).negative(3).useAdaGrad(false).layerSize(100).windowSize(5).learningRate(0.025).minLearningRate(0.0001).iterations(1).batchSize(100).minWordFrequency(5).useUnknown(true).build();
    word2Vec.train(corpus);
    sc.stop();
    WordVectorSerializer.writeWordVectors(word2Vec.getLookupTable(), "/ext/Temp/sparkRuModel.txt");
}

Example 33 with JavaSparkContext

use of org.apache.spark.api.java.JavaSparkContext in project deeplearning4j by deeplearning4j.

the class Word2VecTest method testConcepts.

@Test
public void testConcepts() throws Exception {
    // These are all default values for word2vec
    SparkConf sparkConf = new SparkConf().setMaster("local[8]").setAppName("sparktest");
    // Set SparkContext
    JavaSparkContext sc = new JavaSparkContext(sparkConf);
    // Path of data part-00000
    String dataPath = new ClassPathResource("raw_sentences.txt").getFile().getAbsolutePath();
    //        dataPath = "/ext/Temp/part-00000";
    //        String dataPath = new ClassPathResource("spark_word2vec_test.txt").getFile().getAbsolutePath();
    // Read in data
    JavaRDD<String> corpus = sc.textFile(dataPath);
    TokenizerFactory t = new DefaultTokenizerFactory();
    t.setTokenPreProcessor(new CommonPreprocessor());
    Word2Vec word2Vec = new Word2Vec.Builder().setNGrams(1).tokenizerFactory(t).seed(42L).negative(10).useAdaGrad(false).layerSize(150).windowSize(5).learningRate(0.025).minLearningRate(0.0001).iterations(1).batchSize(100).minWordFrequency(5).stopWords(Arrays.asList("three")).useUnknown(true).build();
    word2Vec.train(corpus);
    //word2Vec.setModelUtils(new FlatModelUtils());
    System.out.println("UNK: " + word2Vec.getWordVectorMatrix("UNK"));
    InMemoryLookupTable<VocabWord> table = (InMemoryLookupTable<VocabWord>) word2Vec.lookupTable();
    double sim = word2Vec.similarity("day", "night");
    System.out.println("day/night similarity: " + sim);
    /*
        System.out.println("Hornjo: " + word2Vec.getWordVectorMatrix("hornjoserbsce"));
        System.out.println("carro: " + word2Vec.getWordVectorMatrix("carro"));
        
        Collection<String> portu = word2Vec.wordsNearest("carro", 10);
        printWords("carro", portu, word2Vec);
        
        portu = word2Vec.wordsNearest("davi", 10);
        printWords("davi", portu, word2Vec);
        
        System.out.println("---------------------------------------");
        */
    Collection<String> words = word2Vec.wordsNearest("day", 10);
    printWords("day", words, word2Vec);
    assertTrue(words.contains("night"));
    assertTrue(words.contains("week"));
    assertTrue(words.contains("year"));
    sim = word2Vec.similarity("two", "four");
    System.out.println("two/four similarity: " + sim);
    words = word2Vec.wordsNearest("two", 10);
    printWords("two", words, word2Vec);
    // three should be absent due to stopWords
    assertFalse(words.contains("three"));
    assertTrue(words.contains("five"));
    assertTrue(words.contains("four"));
    sc.stop();
    // test serialization
    File tempFile = File.createTempFile("temp", "tmp");
    tempFile.deleteOnExit();
    int idx1 = word2Vec.vocab().wordFor("day").getIndex();
    INDArray array1 = word2Vec.getWordVectorMatrix("day").dup();
    VocabWord word1 = word2Vec.vocab().elementAtIndex(0);
    WordVectorSerializer.writeWordVectors(word2Vec.getLookupTable(), tempFile);
    WordVectors vectors = WordVectorSerializer.loadTxtVectors(tempFile);
    VocabWord word2 = ((VocabCache<VocabWord>) vectors.vocab()).elementAtIndex(0);
    VocabWord wordIT = ((VocabCache<VocabWord>) vectors.vocab()).wordFor("it");
    int idx2 = vectors.vocab().wordFor("day").getIndex();
    INDArray array2 = vectors.getWordVectorMatrix("day").dup();
    System.out.println("word 'i': " + word2);
    System.out.println("word 'it': " + wordIT);
    assertEquals(idx1, idx2);
    assertEquals(word1, word2);
    assertEquals(array1, array2);
}

Example 34 with JavaSparkContext

use of org.apache.spark.api.java.JavaSparkContext in project deeplearning4j by deeplearning4j.

the class SparkSequenceVectorsTest method setUp.

@Before
public void setUp() throws Exception {
    if (sequencesCyclic == null) {
        sequencesCyclic = new ArrayList<>();
        // 10 sequences in total
        for (int с = 0; с < 10; с++) {
            Sequence<VocabWord> sequence = new Sequence<>();
            for (int e = 0; e < 10; e++) {
                // we will have 9 equal elements, with total frequency of 10
                sequence.addElement(new VocabWord(1.0, "" + e, (long) e));
            }
            // and 1 element with frequency of 20
            sequence.addElement(new VocabWord(1.0, "0", 0L));
            sequencesCyclic.add(sequence);
        }
    }
    SparkConf sparkConf = new SparkConf().setMaster("local[8]").setAppName("SeqVecTests");
    sc = new JavaSparkContext(sparkConf);
}

Example 35 with JavaSparkContext

use of org.apache.spark.api.java.JavaSparkContext in project deeplearning4j by deeplearning4j.

the class BaseSparkTest method getContext.

/**
     *
     * @return
     */
public JavaSparkContext getContext() {
    if (sc != null)
        return sc;
    // set to test mode
    SparkConf sparkConf = new SparkConf().setMaster("local[4]").setAppName("sparktest").set(Word2VecVariables.NUM_WORDS, String.valueOf(1));
    sc = new JavaSparkContext(sparkConf);
    return sc;
}