Examples with SequenceRecordReader org.datavec.api.records.reader.SequenceRecordReader used on opensource projects

Example 11 with SequenceRecordReader

use of org.datavec.api.records.reader.SequenceRecordReader in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIterator method next.

@Override
public MultiDataSet next(int num) {
    if (!hasNext())
        throw new NoSuchElementException("No next elements");
    //First: load the next values from the RR / SeqRRs
    Map<String, List<List<Writable>>> nextRRVals = new HashMap<>();
    Map<String, List<List<List<Writable>>>> nextSeqRRVals = new HashMap<>();
    List<RecordMetaDataComposableMap> nextMetas = (collectMetaData ? new ArrayList<RecordMetaDataComposableMap>() : null);
    for (Map.Entry<String, RecordReader> entry : recordReaders.entrySet()) {
        RecordReader rr = entry.getValue();
        List<List<Writable>> writables = new ArrayList<>(num);
        for (int i = 0; i < num && rr.hasNext(); i++) {
            List<Writable> record;
            if (collectMetaData) {
                Record r = rr.nextRecord();
                record = r.getRecord();
                if (nextMetas.size() <= i) {
                    nextMetas.add(new RecordMetaDataComposableMap(new HashMap<String, RecordMetaData>()));
                }
                RecordMetaDataComposableMap map = nextMetas.get(i);
                map.getMeta().put(entry.getKey(), r.getMetaData());
            } else {
                record = rr.next();
            }
            writables.add(record);
        }
        nextRRVals.put(entry.getKey(), writables);
    }
    for (Map.Entry<String, SequenceRecordReader> entry : sequenceRecordReaders.entrySet()) {
        SequenceRecordReader rr = entry.getValue();
        List<List<List<Writable>>> writables = new ArrayList<>(num);
        for (int i = 0; i < num && rr.hasNext(); i++) {
            List<List<Writable>> sequence;
            if (collectMetaData) {
                SequenceRecord r = rr.nextSequence();
                sequence = r.getSequenceRecord();
                if (nextMetas.size() <= i) {
                    nextMetas.add(new RecordMetaDataComposableMap(new HashMap<String, RecordMetaData>()));
                }
                RecordMetaDataComposableMap map = nextMetas.get(i);
                map.getMeta().put(entry.getKey(), r.getMetaData());
            } else {
                sequence = rr.sequenceRecord();
            }
            writables.add(sequence);
        }
        nextSeqRRVals.put(entry.getKey(), writables);
    }
    return nextMultiDataSet(nextRRVals, nextSeqRRVals, nextMetas);
}

Example 12 with SequenceRecordReader

use of org.datavec.api.records.reader.SequenceRecordReader in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIteratorTest method testSplittingCSVSequence.

@Test
public void testSplittingCSVSequence() throws Exception {
    //need to manually extract
    for (int i = 0; i < 3; i++) {
        new ClassPathResource(String.format("csvsequence_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabels_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabelsShort_%d.txt", i)).getTempFileFromArchive();
    }
    ClassPathResource resource = new ClassPathResource("csvsequence_0.txt");
    String featuresPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    resource = new ClassPathResource("csvsequencelabels_0.txt");
    String labelsPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    SequenceRecordReader featureReader = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader = new CSVSequenceRecordReader(1, ",");
    featureReader.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    SequenceRecordReaderDataSetIterator iter = new SequenceRecordReaderDataSetIterator(featureReader, labelReader, 1, 4, false);
    SequenceRecordReader featureReader2 = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader2 = new CSVSequenceRecordReader(1, ",");
    featureReader2.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader2.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    MultiDataSetIterator srrmdsi = new RecordReaderMultiDataSetIterator.Builder(1).addSequenceReader("seq1", featureReader2).addSequenceReader("seq2", labelReader2).addInput("seq1", 0, 1).addInput("seq1", 2, 2).addOutputOneHot("seq2", 0, 4).build();
    while (iter.hasNext()) {
        DataSet ds = iter.next();
        INDArray fds = ds.getFeatureMatrix();
        INDArray lds = ds.getLabels();
        MultiDataSet mds = srrmdsi.next();
        assertEquals(2, mds.getFeatures().length);
        assertEquals(1, mds.getLabels().length);
        assertNull(mds.getFeaturesMaskArrays());
        assertNull(mds.getLabelsMaskArrays());
        INDArray[] fmds = mds.getFeatures();
        INDArray[] lmds = mds.getLabels();
        assertNotNull(fmds);
        assertNotNull(lmds);
        for (int i = 0; i < fmds.length; i++) assertNotNull(fmds[i]);
        for (int i = 0; i < lmds.length; i++) assertNotNull(lmds[i]);
        INDArray expIn1 = fds.get(NDArrayIndex.all(), NDArrayIndex.interval(0, 1, true), NDArrayIndex.all());
        INDArray expIn2 = fds.get(NDArrayIndex.all(), NDArrayIndex.interval(2, 2, true), NDArrayIndex.all());
        assertEquals(expIn1, fmds[0]);
        assertEquals(expIn2, fmds[1]);
        assertEquals(lds, lmds[0]);
    }
    assertFalse(srrmdsi.hasNext());
}

Example 13 with SequenceRecordReader

use of org.datavec.api.records.reader.SequenceRecordReader in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIteratorTest method testSplittingCSVSequenceMeta.

@Test
public void testSplittingCSVSequenceMeta() throws Exception {
    //need to manually extract
    for (int i = 0; i < 3; i++) {
        new ClassPathResource(String.format("csvsequence_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabels_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabelsShort_%d.txt", i)).getTempFileFromArchive();
    }
    ClassPathResource resource = new ClassPathResource("csvsequence_0.txt");
    String featuresPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    resource = new ClassPathResource("csvsequencelabels_0.txt");
    String labelsPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    SequenceRecordReader featureReader = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader = new CSVSequenceRecordReader(1, ",");
    featureReader.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    SequenceRecordReader featureReader2 = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader2 = new CSVSequenceRecordReader(1, ",");
    featureReader2.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader2.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    RecordReaderMultiDataSetIterator srrmdsi = new RecordReaderMultiDataSetIterator.Builder(1).addSequenceReader("seq1", featureReader2).addSequenceReader("seq2", labelReader2).addInput("seq1", 0, 1).addInput("seq1", 2, 2).addOutputOneHot("seq2", 0, 4).build();
    srrmdsi.setCollectMetaData(true);
    int count = 0;
    while (srrmdsi.hasNext()) {
        MultiDataSet mds = srrmdsi.next();
        MultiDataSet fromMeta = srrmdsi.loadFromMetaData(mds.getExampleMetaData(RecordMetaData.class));
        assertEquals(mds, fromMeta);
        count++;
    }
    assertEquals(3, count);
}

Example 14 with SequenceRecordReader

use of org.datavec.api.records.reader.SequenceRecordReader in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIteratorTest method testVariableLengthTSMeta.

@Test
public void testVariableLengthTSMeta() throws Exception {
    //need to manually extract
    for (int i = 0; i < 3; i++) {
        new ClassPathResource(String.format("csvsequence_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabels_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabelsShort_%d.txt", i)).getTempFileFromArchive();
    }
    //Set up SequenceRecordReaderDataSetIterators for comparison
    ClassPathResource resource = new ClassPathResource("csvsequence_0.txt");
    String featuresPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    resource = new ClassPathResource("csvsequencelabelsShort_0.txt");
    String labelsPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    //Set up
    SequenceRecordReader featureReader3 = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader3 = new CSVSequenceRecordReader(1, ",");
    featureReader3.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader3.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    SequenceRecordReader featureReader4 = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader4 = new CSVSequenceRecordReader(1, ",");
    featureReader4.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader4.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    RecordReaderMultiDataSetIterator rrmdsiStart = new RecordReaderMultiDataSetIterator.Builder(1).addSequenceReader("in", featureReader3).addSequenceReader("out", labelReader3).addInput("in").addOutputOneHot("out", 0, 4).sequenceAlignmentMode(RecordReaderMultiDataSetIterator.AlignmentMode.ALIGN_START).build();
    RecordReaderMultiDataSetIterator rrmdsiEnd = new RecordReaderMultiDataSetIterator.Builder(1).addSequenceReader("in", featureReader4).addSequenceReader("out", labelReader4).addInput("in").addOutputOneHot("out", 0, 4).sequenceAlignmentMode(RecordReaderMultiDataSetIterator.AlignmentMode.ALIGN_END).build();
    rrmdsiStart.setCollectMetaData(true);
    rrmdsiEnd.setCollectMetaData(true);
    int count = 0;
    while (rrmdsiStart.hasNext()) {
        MultiDataSet mdsStart = rrmdsiStart.next();
        MultiDataSet mdsEnd = rrmdsiEnd.next();
        MultiDataSet mdsStartFromMeta = rrmdsiStart.loadFromMetaData(mdsStart.getExampleMetaData(RecordMetaData.class));
        MultiDataSet mdsEndFromMeta = rrmdsiEnd.loadFromMetaData(mdsEnd.getExampleMetaData(RecordMetaData.class));
        assertEquals(mdsStart, mdsStartFromMeta);
        assertEquals(mdsEnd, mdsEndFromMeta);
        count++;
    }
    assertFalse(rrmdsiStart.hasNext());
    assertFalse(rrmdsiEnd.hasNext());
    assertEquals(3, count);
}

Example 15 with SequenceRecordReader

use of org.datavec.api.records.reader.SequenceRecordReader in project deeplearning4j by deeplearning4j.

the class RecordReaderMultiDataSetIteratorTest method testsBasic.

@Test
public void testsBasic() throws Exception {
    //Load details from CSV files; single input/output -> compare to RecordReaderDataSetIterator
    RecordReader rr = new CSVRecordReader(0, ",");
    rr.initialize(new FileSplit(new ClassPathResource("iris.txt").getTempFileFromArchive()));
    RecordReaderDataSetIterator rrdsi = new RecordReaderDataSetIterator(rr, 10, 4, 3);
    RecordReader rr2 = new CSVRecordReader(0, ",");
    rr2.initialize(new FileSplit(new ClassPathResource("iris.txt").getTempFileFromArchive()));
    MultiDataSetIterator rrmdsi = new RecordReaderMultiDataSetIterator.Builder(10).addReader("reader", rr2).addInput("reader", 0, 3).addOutputOneHot("reader", 4, 3).build();
    while (rrdsi.hasNext()) {
        DataSet ds = rrdsi.next();
        INDArray fds = ds.getFeatureMatrix();
        INDArray lds = ds.getLabels();
        MultiDataSet mds = rrmdsi.next();
        assertEquals(1, mds.getFeatures().length);
        assertEquals(1, mds.getLabels().length);
        assertNull(mds.getFeaturesMaskArrays());
        assertNull(mds.getLabelsMaskArrays());
        INDArray fmds = mds.getFeatures(0);
        INDArray lmds = mds.getLabels(0);
        assertNotNull(fmds);
        assertNotNull(lmds);
        assertEquals(fds, fmds);
        assertEquals(lds, lmds);
    }
    assertFalse(rrmdsi.hasNext());
    //need to manually extract
    for (int i = 0; i < 3; i++) {
        new ClassPathResource(String.format("csvsequence_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabels_%d.txt", i)).getTempFileFromArchive();
        new ClassPathResource(String.format("csvsequencelabelsShort_%d.txt", i)).getTempFileFromArchive();
    }
    //Load time series from CSV sequence files; compare to SequenceRecordReaderDataSetIterator
    ClassPathResource resource = new ClassPathResource("csvsequence_0.txt");
    String featuresPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    resource = new ClassPathResource("csvsequencelabels_0.txt");
    String labelsPath = resource.getTempFileFromArchive().getAbsolutePath().replaceAll("0", "%d");
    SequenceRecordReader featureReader = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader = new CSVSequenceRecordReader(1, ",");
    featureReader.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    SequenceRecordReaderDataSetIterator iter = new SequenceRecordReaderDataSetIterator(featureReader, labelReader, 1, 4, false);
    SequenceRecordReader featureReader2 = new CSVSequenceRecordReader(1, ",");
    SequenceRecordReader labelReader2 = new CSVSequenceRecordReader(1, ",");
    featureReader2.initialize(new NumberedFileInputSplit(featuresPath, 0, 2));
    labelReader2.initialize(new NumberedFileInputSplit(labelsPath, 0, 2));
    MultiDataSetIterator srrmdsi = new RecordReaderMultiDataSetIterator.Builder(1).addSequenceReader("in", featureReader2).addSequenceReader("out", labelReader2).addInput("in").addOutputOneHot("out", 0, 4).build();
    while (iter.hasNext()) {
        DataSet ds = iter.next();
        INDArray fds = ds.getFeatureMatrix();
        INDArray lds = ds.getLabels();
        MultiDataSet mds = srrmdsi.next();
        assertEquals(1, mds.getFeatures().length);
        assertEquals(1, mds.getLabels().length);
        assertNull(mds.getFeaturesMaskArrays());
        assertNull(mds.getLabelsMaskArrays());
        INDArray fmds = mds.getFeatures(0);
        INDArray lmds = mds.getLabels(0);
        assertNotNull(fmds);
        assertNotNull(lmds);
        assertEquals(fds, fmds);
        assertEquals(lds, lmds);
    }
    assertFalse(srrmdsi.hasNext());
}