Java* API Reference for Intel® Data Analytics Acceleration Library 2018 Update 1

MaxPool3DLayerDenseBatch.java

/* file: MaxPool3DLayerDenseBatch.java */
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/*
// Content:
// Java example of neural network forward and backward three-dimensional maximum pooling layers usage
*/
package com.intel.daal.examples.neural_networks;
import com.intel.daal.algorithms.neural_networks.layers.maximum_pooling3d.*;
import com.intel.daal.algorithms.neural_networks.layers.ForwardResultId;
import com.intel.daal.algorithms.neural_networks.layers.ForwardResultLayerDataId;
import com.intel.daal.algorithms.neural_networks.layers.ForwardInputId;
import com.intel.daal.algorithms.neural_networks.layers.BackwardResultId;
import com.intel.daal.algorithms.neural_networks.layers.BackwardInputId;
import com.intel.daal.algorithms.neural_networks.layers.BackwardInputLayerDataId;
import com.intel.daal.data_management.data.Tensor;
import com.intel.daal.data_management.data.HomogenTensor;
import com.intel.daal.examples.utils.Service;
import com.intel.daal.services.DaalContext;
import com.intel.daal.data_management.data.NumericTable;
class MaxPool3DLayerDenseBatch {
private static DaalContext context = new DaalContext();
static float dataArray[] = {
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16,
17, 18, 19, 20,
21, 22, 23, 24
};
static long[] dims = {3, 2, 4};
public static void main(String[] args) throws java.io.FileNotFoundException, java.io.IOException {
/* Read datasetFileName from a file and create a tensor to store forward input data */
HomogenTensor data = new HomogenTensor(context, dims, dataArray);
long nDim = data.getDimensions().length;
/* Print the input of the forward three-dimensional pooling */
Service.printTensor("Forward three-dimensional maximum pooling input:", data, 0, 0);
/* Create an algorithm to compute forward three-dimensional pooling results using default method */
MaximumPooling3dForwardBatch maximumPooling3DLayerForward = new MaximumPooling3dForwardBatch(context, Float.class, MaximumPooling3dMethod.defaultDense, nDim);
/* Set input objects for the forward three-dimensional pooling */
maximumPooling3DLayerForward.input.set(ForwardInputId.data, data);
/* Compute forward three-dimensional pooling results */
MaximumPooling3dForwardResult forwardResult = maximumPooling3DLayerForward.compute();
/* Print the results of the forward three-dimensional pooling */
Service.printTensor("Forward three-dimensional maximum pooling result:", forwardResult.get(ForwardResultId.value), 0, 0);
Service.printTensor("Forward three-dimensional maximum pooling layer selected indices:",
forwardResult.get(MaximumPooling3dLayerDataId.auxSelectedIndices), 0, 0);
/* Create an algorithm to compute backward three-dimensional pooling results using default method */
MaximumPooling3dBackwardBatch maximumPooling3DLayerBackward = new MaximumPooling3dBackwardBatch(context, Float.class, MaximumPooling3dMethod.defaultDense, nDim);
/* Set input objects for the backward three-dimensional pooling */
maximumPooling3DLayerBackward.input.set(BackwardInputId.inputGradient, forwardResult.get(ForwardResultId.value));
maximumPooling3DLayerBackward.input.set(BackwardInputLayerDataId.inputFromForward,
forwardResult.get(ForwardResultLayerDataId.resultForBackward));
/* Compute backward three-dimensional pooling results */
MaximumPooling3dBackwardResult backwardResult = maximumPooling3DLayerBackward.compute();
/* Print the results of the backward three-dimensional pooling */
Service.printTensor("Backward three-dimensional maximum pooling result:", backwardResult.get(BackwardResultId.gradient), 0, 0);
context.dispose();
}
}

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