Examples with INDArray org.nd4j.linalg.api.ndarray.INDArray used on opensource projects

Example 76 with INDArray

use of org.nd4j.linalg.api.ndarray.INDArray in project deeplearning4j by deeplearning4j.

the class GraphFeedForwardWithKeyFunctionAdapter method call.

@Override
public Iterable<Tuple2<K, INDArray[]>> call(Iterator<Tuple2<K, INDArray[]>> iterator) throws Exception {
    if (!iterator.hasNext()) {
        return Collections.emptyList();
    }
    ComputationGraph network = new ComputationGraph(ComputationGraphConfiguration.fromJson(jsonConfig.getValue()));
    network.init();
    INDArray val = params.value().unsafeDuplication();
    if (val.length() != network.numParams(false))
        throw new IllegalStateException("Network did not have same number of parameters as the broadcast set parameters");
    network.setParams(val);
    //Issue: for 2d data (MLPs etc) we can just stack the examples.
    //But: for 3d and 4d: in principle the data sizes could be different
    //We could handle that with mask arrays - but it gets messy. The approach used here is simpler but less efficient
    List<INDArray[]> featuresList = new ArrayList<>(batchSize);
    List<K> keyList = new ArrayList<>(batchSize);
    List<Integer> origSizeList = new ArrayList<>();
    int[][] firstShapes = null;
    boolean sizesDiffer = false;
    int tupleCount = 0;
    while (iterator.hasNext()) {
        Tuple2<K, INDArray[]> t2 = iterator.next();
        if (firstShapes == null) {
            firstShapes = new int[t2._2().length][0];
            for (int i = 0; i < firstShapes.length; i++) {
                firstShapes[i] = t2._2()[i].shape();
            }
        } else if (!sizesDiffer) {
            for (int i = 0; i < firstShapes.length; i++) {
                for (int j = 1; j < firstShapes[i].length; j++) {
                    if (firstShapes[i][j] != featuresList.get(tupleCount - 1)[i].size(j)) {
                        sizesDiffer = true;
                        break;
                    }
                }
            }
        }
        featuresList.add(t2._2());
        keyList.add(t2._1());
        origSizeList.add(t2._2()[0].size(0));
        tupleCount++;
    }
    if (tupleCount == 0) {
        return Collections.emptyList();
    }
    List<Tuple2<K, INDArray[]>> output = new ArrayList<>(tupleCount);
    int currentArrayIndex = 0;
    while (currentArrayIndex < featuresList.size()) {
        int firstIdx = currentArrayIndex;
        int nextIdx = currentArrayIndex;
        int examplesInBatch = 0;
        List<INDArray[]> toMerge = new ArrayList<>();
        firstShapes = null;
        while (nextIdx < featuresList.size() && examplesInBatch < batchSize) {
            INDArray[] f = featuresList.get(nextIdx);
            if (firstShapes == null) {
                firstShapes = new int[f.length][0];
                for (int i = 0; i < firstShapes.length; i++) {
                    firstShapes[i] = f[i].shape();
                }
            } else if (sizesDiffer) {
                boolean breakWhile = false;
                for (int i = 0; i < firstShapes.length; i++) {
                    for (int j = 1; j < firstShapes[i].length; j++) {
                        if (firstShapes[i][j] != featuresList.get(nextIdx)[i].size(j)) {
                            //Next example has a different size. So: don't add it to the current batch, just process what we have
                            breakWhile = true;
                            break;
                        }
                    }
                }
                if (breakWhile) {
                    break;
                }
            }
            toMerge.add(f);
            examplesInBatch += f[0].size(0);
            nextIdx++;
        }
        INDArray[] batchFeatures = new INDArray[toMerge.get(0).length];
        for (int i = 0; i < batchFeatures.length; i++) {
            INDArray[] tempArr = new INDArray[toMerge.size()];
            for (int j = 0; j < tempArr.length; j++) {
                tempArr[j] = toMerge.get(j)[i];
            }
            batchFeatures[i] = Nd4j.concat(0, tempArr);
        }
        INDArray[] out = network.output(false, batchFeatures);
        examplesInBatch = 0;
        for (int i = firstIdx; i < nextIdx; i++) {
            int numExamples = origSizeList.get(i);
            INDArray[] outSubset = new INDArray[out.length];
            for (int j = 0; j < out.length; j++) {
                outSubset[j] = getSubset(examplesInBatch, examplesInBatch + numExamples, out[j]);
            }
            examplesInBatch += numExamples;
            output.add(new Tuple2<>(keyList.get(i), outSubset));
        }
        currentArrayIndex += (nextIdx - firstIdx);
    }
    if (Nd4j.getExecutioner() instanceof GridExecutioner)
        ((GridExecutioner) Nd4j.getExecutioner()).flushQueueBlocking();
    return output;
}

Example 77 with INDArray

use of org.nd4j.linalg.api.ndarray.INDArray in project deeplearning4j by deeplearning4j.

the class IEvaluateFlatMapFunctionAdapter method call.

@Override
public Iterable<T> call(Iterator<DataSet> dataSetIterator) throws Exception {
    if (!dataSetIterator.hasNext()) {
        return Collections.emptyList();
    }
    MultiLayerNetwork network = new MultiLayerNetwork(MultiLayerConfiguration.fromJson(json.getValue()));
    network.init();
    INDArray val = params.value().unsafeDuplication();
    if (val.length() != network.numParams(false))
        throw new IllegalStateException("Network did not have same number of parameters as the broadcast set parameters");
    network.setParameters(val);
    List<DataSet> collect = new ArrayList<>();
    int totalCount = 0;
    while (dataSetIterator.hasNext()) {
        collect.clear();
        int nExamples = 0;
        while (dataSetIterator.hasNext() && nExamples < evalBatchSize) {
            DataSet next = dataSetIterator.next();
            nExamples += next.numExamples();
            collect.add(next);
        }
        totalCount += nExamples;
        DataSet data = DataSet.merge(collect);
        INDArray out;
        if (data.hasMaskArrays()) {
            out = network.output(data.getFeatureMatrix(), false, data.getFeaturesMaskArray(), data.getLabelsMaskArray());
        } else {
            out = network.output(data.getFeatureMatrix(), false);
        }
        if (data.getLabels().rank() == 3) {
            if (data.getLabelsMaskArray() == null) {
                evaluation.evalTimeSeries(data.getLabels(), out);
            } else {
                evaluation.evalTimeSeries(data.getLabels(), out, data.getLabelsMaskArray());
            }
        } else {
            evaluation.eval(data.getLabels(), out);
        }
    }
    if (log.isDebugEnabled()) {
        log.debug("Evaluated {} examples ", totalCount);
    }
    return Collections.singletonList(evaluation);
}

Example 78 with INDArray

use of org.nd4j.linalg.api.ndarray.INDArray in project deeplearning4j by deeplearning4j.

the class ScoreExamplesWithKeyFunctionAdapter method call.

@Override
public Iterable<Tuple2<K, Double>> call(Iterator<Tuple2<K, DataSet>> iterator) throws Exception {
    if (!iterator.hasNext()) {
        return Collections.emptyList();
    }
    MultiLayerNetwork network = new MultiLayerNetwork(MultiLayerConfiguration.fromJson(jsonConfig.getValue()));
    network.init();
    INDArray val = params.value().unsafeDuplication();
    if (val.length() != network.numParams(false))
        throw new IllegalStateException("Network did not have same number of parameters as the broadcast set parameters");
    network.setParameters(val);
    List<Tuple2<K, Double>> ret = new ArrayList<>();
    List<DataSet> collect = new ArrayList<>(batchSize);
    List<K> collectKey = new ArrayList<>(batchSize);
    int totalCount = 0;
    while (iterator.hasNext()) {
        collect.clear();
        collectKey.clear();
        int nExamples = 0;
        while (iterator.hasNext() && nExamples < batchSize) {
            Tuple2<K, DataSet> t2 = iterator.next();
            DataSet ds = t2._2();
            int n = ds.numExamples();
            if (n != 1)
                throw new IllegalStateException("Cannot score examples with one key per data set if " + "data set contains more than 1 example (numExamples: " + n + ")");
            collect.add(ds);
            collectKey.add(t2._1());
            nExamples += n;
        }
        totalCount += nExamples;
        DataSet data = DataSet.merge(collect);
        INDArray scores = network.scoreExamples(data, addRegularization);
        double[] doubleScores = scores.data().asDouble();
        for (int i = 0; i < doubleScores.length; i++) {
            ret.add(new Tuple2<>(collectKey.get(i), doubleScores[i]));
        }
    }
    if (Nd4j.getExecutioner() instanceof GridExecutioner)
        ((GridExecutioner) Nd4j.getExecutioner()).flushQueueBlocking();
    if (log.isDebugEnabled()) {
        log.debug("Scored {} examples ", totalCount);
    }
    return ret;
}

Example 79 with INDArray

use of org.nd4j.linalg.api.ndarray.INDArray in project deeplearning4j by deeplearning4j.

the class ParameterAveragingElementCombineFunction method call.

@Override
public ParameterAveragingAggregationTuple call(ParameterAveragingAggregationTuple v1, ParameterAveragingAggregationTuple v2) throws Exception {
    if (v1 == null)
        return v2;
    else if (v2 == null)
        return v1;
    //Handle edge case of less data than executors: in this case, one (or both) of v1 and v2 might not have any contents...
    if (v1.getParametersSum() == null)
        return v2;
    else if (v2.getParametersSum() == null)
        return v1;
    INDArray newParams = v1.getParametersSum().addi(v2.getParametersSum());
    INDArray updaterStateSum;
    if (v1.getUpdaterStateSum() == null) {
        updaterStateSum = v2.getUpdaterStateSum();
    } else {
        updaterStateSum = v1.getUpdaterStateSum();
        if (v2.getUpdaterStateSum() != null)
            updaterStateSum.addi(v2.getUpdaterStateSum());
    }
    double scoreSum = v1.getScoreSum() + v2.getScoreSum();
    int aggregationCount = v1.getAggregationsCount() + v2.getAggregationsCount();
    SparkTrainingStats stats = v1.getSparkTrainingStats();
    if (v2.getSparkTrainingStats() != null) {
        if (stats == null)
            stats = v2.getSparkTrainingStats();
        else
            stats.addOtherTrainingStats(v2.getSparkTrainingStats());
    }
    if (Nd4j.getExecutioner() instanceof GridExecutioner)
        ((GridExecutioner) Nd4j.getExecutioner()).flushQueueBlocking();
    Collection<StorageMetaData> listenerMetaData = v1.getListenerMetaData();
    if (listenerMetaData == null)
        listenerMetaData = v2.getListenerMetaData();
    else {
        Collection<StorageMetaData> newMeta = v2.getListenerMetaData();
        if (newMeta != null)
            listenerMetaData.addAll(newMeta);
    }
    Collection<Persistable> listenerStaticInfo = v1.getListenerStaticInfo();
    if (listenerStaticInfo == null)
        listenerStaticInfo = v2.getListenerStaticInfo();
    else {
        Collection<Persistable> newStatic = v2.getListenerStaticInfo();
        if (newStatic != null)
            listenerStaticInfo.addAll(newStatic);
    }
    Collection<Persistable> listenerUpdates = v1.getListenerUpdates();
    if (listenerUpdates == null)
        listenerUpdates = v2.getListenerUpdates();
    else {
        Collection<Persistable> listenerUpdates2 = v2.getListenerUpdates();
        if (listenerUpdates2 != null)
            listenerUpdates.addAll(listenerUpdates2);
    }
    return new ParameterAveragingAggregationTuple(newParams, updaterStateSum, scoreSum, aggregationCount, stats, listenerMetaData, listenerStaticInfo, listenerUpdates);
}

Example 80 with INDArray

use of org.nd4j.linalg.api.ndarray.INDArray in project deeplearning4j by deeplearning4j.

the class ScoreExamplesFunctionAdapter method call.

@Override
public Iterable<Double> call(Iterator<MultiDataSet> iterator) throws Exception {
    if (!iterator.hasNext()) {
        return Collections.emptyList();
    }
    ComputationGraph network = new ComputationGraph(ComputationGraphConfiguration.fromJson(jsonConfig.getValue()));
    network.init();
    INDArray val = params.value().unsafeDuplication();
    if (val.length() != network.numParams(false))
        throw new IllegalStateException("Network did not have same number of parameters as the broadcast set parameters");
    network.setParams(val);
    List<Double> ret = new ArrayList<>();
    List<MultiDataSet> collect = new ArrayList<>(batchSize);
    int totalCount = 0;
    while (iterator.hasNext()) {
        collect.clear();
        int nExamples = 0;
        while (iterator.hasNext() && nExamples < batchSize) {
            MultiDataSet ds = iterator.next();
            int n = ds.getFeatures(0).size(0);
            collect.add(ds);
            nExamples += n;
        }
        totalCount += nExamples;
        MultiDataSet data = org.nd4j.linalg.dataset.MultiDataSet.merge(collect);
        INDArray scores = network.scoreExamples(data, addRegularization);
        double[] doubleScores = scores.data().asDouble();
        for (double doubleScore : doubleScores) {
            ret.add(doubleScore);
        }
    }
    if (Nd4j.getExecutioner() instanceof GridExecutioner)
        ((GridExecutioner) Nd4j.getExecutioner()).flushQueueBlocking();
    if (log.isDebugEnabled()) {
        log.debug("Scored {} examples ", totalCount);
    }
    return ret;
}