Examples with FileSplit org.datavec.api.split.FileSplit used on opensource projects

Example 6 with FileSplit

use of org.datavec.api.split.FileSplit in project deeplearning4j by deeplearning4j.

the class DataSetIteratorTest method testMnist.

@Test
public void testMnist() throws Exception {
    ClassPathResource cpr = new ClassPathResource("mnist_first_200.txt");
    CSVRecordReader rr = new CSVRecordReader(0, ",");
    rr.initialize(new FileSplit(cpr.getTempFileFromArchive()));
    RecordReaderDataSetIterator dsi = new RecordReaderDataSetIterator(rr, 10, 0, 10);
    MnistDataSetIterator iter = new MnistDataSetIterator(10, 200, false, true, false, 0);
    while (dsi.hasNext()) {
        DataSet dsExp = dsi.next();
        DataSet dsAct = iter.next();
        INDArray fExp = dsExp.getFeatureMatrix();
        fExp.divi(255);
        INDArray lExp = dsExp.getLabels();
        INDArray fAct = dsAct.getFeatureMatrix();
        INDArray lAct = dsAct.getLabels();
        assertEquals(fExp, fAct);
        assertEquals(lExp, lAct);
    }
    assertFalse(iter.hasNext());
}

Example 7 with FileSplit

use of org.datavec.api.split.FileSplit in project deeplearning4j by deeplearning4j.

the class MultipleEpochsIteratorTest method testNextAndReset.

@Test
public void testNextAndReset() throws Exception {
    int epochs = 3;
    RecordReader rr = new CSVRecordReader();
    rr.initialize(new FileSplit(new ClassPathResource("iris.txt").getFile()));
    DataSetIterator iter = new RecordReaderDataSetIterator(rr, 150);
    MultipleEpochsIterator multiIter = new MultipleEpochsIterator(epochs, iter);
    assertTrue(multiIter.hasNext());
    while (multiIter.hasNext()) {
        DataSet path = multiIter.next();
        assertFalse(path == null);
    }
    assertEquals(epochs, multiIter.epochs);
}

Example 8 with FileSplit

use of org.datavec.api.split.FileSplit in project deeplearning4j by deeplearning4j.

the class MultipleEpochsIteratorTest method testLoadFullDataSet.

@Test
public void testLoadFullDataSet() throws Exception {
    int epochs = 3;
    RecordReader rr = new CSVRecordReader();
    rr.initialize(new FileSplit(new ClassPathResource("iris.txt").getFile()));
    DataSetIterator iter = new RecordReaderDataSetIterator(rr, 150);
    DataSet ds = iter.next(50);
    MultipleEpochsIterator multiIter = new MultipleEpochsIterator(epochs, ds);
    assertTrue(multiIter.hasNext());
    while (multiIter.hasNext()) {
        DataSet path = multiIter.next();
        assertEquals(path.numExamples(), 50, 0.0);
        assertFalse(path == null);
    }
    assertEquals(epochs, multiIter.epochs);
}

Example 9 with FileSplit

use of org.datavec.api.split.FileSplit in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIteratorTest method testImagesRRDMSI.

@Test
public void testImagesRRDMSI() throws Exception {
    File parentDir = Files.createTempDir();
    parentDir.deleteOnExit();
    String str1 = FilenameUtils.concat(parentDir.getAbsolutePath(), "Zico/");
    String str2 = FilenameUtils.concat(parentDir.getAbsolutePath(), "Ziwang_Xu/");
    File f1 = new File(str1);
    File f2 = new File(str2);
    f1.mkdirs();
    f2.mkdirs();
    writeStreamToFile(new File(FilenameUtils.concat(f1.getPath(), "Zico_0001.jpg")), new ClassPathResource("lfwtest/Zico/Zico_0001.jpg").getInputStream());
    writeStreamToFile(new File(FilenameUtils.concat(f2.getPath(), "Ziwang_Xu_0001.jpg")), new ClassPathResource("lfwtest/Ziwang_Xu/Ziwang_Xu_0001.jpg").getInputStream());
    int outputNum = 2;
    Random r = new Random(12345);
    ParentPathLabelGenerator labelMaker = new ParentPathLabelGenerator();
    ImageRecordReader rr1 = new ImageRecordReader(10, 10, 1, labelMaker);
    ImageRecordReader rr1s = new ImageRecordReader(5, 5, 1, labelMaker);
    rr1.initialize(new FileSplit(parentDir));
    rr1s.initialize(new FileSplit(parentDir));
    MultiDataSetIterator trainDataIterator = new RecordReaderMultiDataSetIterator.Builder(1).addReader("rr1", rr1).addReader("rr1s", rr1s).addInput("rr1", 0, 0).addInput("rr1s", 0, 0).addOutputOneHot("rr1s", 1, outputNum).build();
    //Now, do the same thing with ImageRecordReader, and check we get the same results:
    ImageRecordReader rr1_b = new ImageRecordReader(10, 10, 1, labelMaker);
    ImageRecordReader rr1s_b = new ImageRecordReader(5, 5, 1, labelMaker);
    rr1_b.initialize(new FileSplit(parentDir));
    rr1s_b.initialize(new FileSplit(parentDir));
    DataSetIterator dsi1 = new RecordReaderDataSetIterator(rr1_b, 1, 1, 2);
    DataSetIterator dsi2 = new RecordReaderDataSetIterator(rr1s_b, 1, 1, 2);
    for (int i = 0; i < 2; i++) {
        MultiDataSet mds = trainDataIterator.next();
        DataSet d1 = dsi1.next();
        DataSet d2 = dsi2.next();
        assertEquals(d1.getFeatureMatrix(), mds.getFeatures(0));
        assertEquals(d2.getFeatureMatrix(), mds.getFeatures(1));
        assertEquals(d1.getLabels(), mds.getLabels(0));
    }
}

Example 10 with FileSplit

use of org.datavec.api.split.FileSplit in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIteratorTest method testSplittingCSVMeta.

@Test
public void testSplittingCSVMeta() throws Exception {
    //Here's the idea: take Iris, and split it up into 2 inputs and 2 output arrays
    //Inputs: columns 0 and 1-2
    //Outputs: columns 3, and 4->OneHot
    RecordReader rr2 = new CSVRecordReader(0, ",");
    rr2.initialize(new FileSplit(new ClassPathResource("iris.txt").getTempFileFromArchive()));
    RecordReaderMultiDataSetIterator rrmdsi = new RecordReaderMultiDataSetIterator.Builder(10).addReader("reader", rr2).addInput("reader", 0, 0).addInput("reader", 1, 2).addOutput("reader", 3, 3).addOutputOneHot("reader", 4, 3).build();
    rrmdsi.setCollectMetaData(true);
    int count = 0;
    while (rrmdsi.hasNext()) {
        MultiDataSet mds = rrmdsi.next();
        MultiDataSet fromMeta = rrmdsi.loadFromMetaData(mds.getExampleMetaData(RecordMetaData.class));
        assertEquals(mds, fromMeta);
        count++;
    }
    assertEquals(150 / 10, count);
}