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

reshape_layer_dense_batch.py

1 # file: reshape_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 forward and backward reshape layer 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 reshape
34 from daal.data_management import HomogenTensor, Tensor
35 
36 utils_folder = os.path.realpath(os.path.abspath(os.path.dirname(os.path.dirname(__file__))))
37 if utils_folder not in sys.path:
38  sys.path.insert(0, utils_folder)
39 from utils import printTensor, readTensorFromCSV
40 
41 # Input data set parameters
42 datasetName = os.path.join("..", "data", "batch", "layer.csv")
43 
44 if __name__ == "__main__":
45 
46  # Read datasetFileName from a file and create a tensor to store input data
47  tensorData = readTensorFromCSV(datasetName)
48 
49  reshapeDimensions = [-1, 5]
50 
51  # Create an algorithm to compute forward reshape layer results using default method
52  reshapeLayerForward = reshape.forward.Batch(reshapeDimensions)
53 
54  # Set input objects for the forward reshape layer
55  reshapeLayerForward.input.setInput(layers.forward.data, tensorData)
56 
57  printTensor(tensorData, "Forward reshape layer input (first 5 rows):", 5)
58 
59  # Compute forward reshape layer results
60  forwardResult = reshapeLayerForward.compute()
61 
62  # Print the results of the forward reshape layer
63  printTensor(forwardResult.getResult(layers.forward.value), "Forward reshape layer result (first 5 rows):", 5)
64 
65  # Get the size of forward reshape layer output
66  gDims = forwardResult.getResult(layers.forward.value).getDimensions()
67  tensorDataBack = HomogenTensor(gDims, Tensor.doAllocate, 0.01)
68 
69  # Create an algorithm to compute backward reshape layer results using default method
70  reshapeLayerBackward = reshape.backward.Batch()
71 
72  # Set input objects for the backward reshape layer
73  reshapeLayerBackward.input.setInput(layers.backward.inputGradient, tensorDataBack)
74  reshapeLayerBackward.input.setInputLayerData(layers.backward.inputFromForward, forwardResult.getResultLayerData(layers.forward.resultForBackward))
75 
76  # Compute backward reshape layer results
77  backwardResult = reshapeLayerBackward.compute()
78 
79  # Print the results of the backward reshape layer
80  printTensor(backwardResult.getResult(layers.backward.gradient), "Backward reshape layer result (first 5 rows):", 5)

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