Python* API Reference for Intel® Data Analytics Acceleration Library 2020 Update 1

stoch_pool2d_layer_dense_batch.py

1 # file: stoch_pool2d_layer_dense_batch.py
2 #===============================================================================
3 # Copyright 2014-2020 Intel Corporation
4 #
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
8 #
9 # http://www.apache.org/licenses/LICENSE-2.0
10 #
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
16 #===============================================================================
17 
18 #
19 # ! Content:
20 # ! Python example of neural network forward and backward two-dimensional stochastic pooling layers usage
21 # !
22 # !*****************************************************************************
23 
24 #
25 
26 
27 #
28 
29 import os
30 import sys
31 
32 from daal.algorithms.neural_networks import layers
33 from daal.algorithms.neural_networks.layers import stochastic_pooling2d
34 
35 utils_folder = os.path.realpath(os.path.abspath(os.path.dirname(os.path.dirname(__file__))))
36 if utils_folder not in sys.path:
37  sys.path.insert(0, utils_folder)
38 from utils import printTensor, readTensorFromCSV
39 
40 # Input non-negative data set name
41 datasetFileName = os.path.join("..", "data", "batch", "layer_non_negative.csv")
42 
43 if __name__ == "__main__":
44 
45  # Read datasetFileName from a file and create a tensor to store input data
46  data = readTensorFromCSV(datasetFileName)
47  nDim = data.getNumberOfDimensions()
48  printTensor(data, "Forward two-dimensional stochastic pooling layer input (first 10 rows):", 10)
49 
50  # Create an algorithm to compute forward two-dimensional stochastic pooling layer results using default method
51  forwardLayer = stochastic_pooling2d.forward.Batch(nDim)
52  forwardLayer.input.setInput(layers.forward.data, data)
53 
54  # Compute forward two-dimensional stochastic pooling layer results
55  forwardLayer.compute()
56 
57  # Get the computed forward two-dimensional stochastic pooling layer results
58  forwardResult = forwardLayer.getResult()
59 
60  printTensor(forwardResult.getResult(layers.forward.value), "Forward two-dimensional stochastic pooling layer result (first 5 rows):", 5)
61  printTensor(forwardResult.getLayerData(layers.stochastic_pooling2d.auxSelectedIndices),
62  "Forward two-dimensional stochastic pooling layer selected indices (first 10 rows):", 10)
63 
64  # Create an algorithm to compute backward two-dimensional stochastic pooling layer results using default method
65  backwardLayer = layers.stochastic_pooling2d.backward.Batch(nDim)
66  backwardLayer.input.setInput(layers.backward.inputGradient, forwardResult.getResult(layers.forward.value))
67  backwardLayer.input.setInputLayerData(layers.backward.inputFromForward, forwardResult.getResultLayerData(layers.forward.resultForBackward))
68 
69  # Compute backward two-dimensional stochastic pooling layer results
70  backwardLayer.compute()
71 
72  # Get the computed backward two-dimensional stochastic pooling layer results
73  backwardResult = backwardLayer.getResult()
74 
75  printTensor(backwardResult.getResult(layers.backward.gradient),
76  "Backward two-dimensional stochastic pooling layer result (first 10 rows):", 10)

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