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R Deep Learning Cookbook

You're reading from   R Deep Learning Cookbook Solve complex neural net problems with TensorFlow, H2O and MXNet

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Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781787121089
Length 288 pages
Edition 1st Edition
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Authors (2):
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Achyutuni Sri Krishna Rao Achyutuni Sri Krishna Rao
Author Profile Icon Achyutuni Sri Krishna Rao
Achyutuni Sri Krishna Rao
PKS Prakash PKS Prakash
Author Profile Icon PKS Prakash
PKS Prakash
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Toc

Table of Contents (11) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Deep Learning with R 3. Convolution Neural Network 4. Data Representation Using Autoencoders 5. Generative Models in Deep Learning 6. Recurrent Neural Networks 7. Reinforcement Learning 8. Application of Deep Learning in Text Mining 9. Application of Deep Learning to Signal processing 10. Transfer Learning

Creating the first convolution layer


In this recipe, let's create the first convolution layer.

Getting ready

The following are the inputs to the function create_conv_layer defined in the recipe Using functions to create a new convolution layer.

  • Input: This is a four-dimensional reshaped input placeholder variable: x_image
  • Num_input_channels: This is the number of color channels, namely num_channels
  • Filter_size: This is the height and width of the filter layer filter_size1
  • Num_filters: This is the depth of the filter layer, namely num_filters1
  • Use_pooling: This is the binary flag set to TRUE

How to do it...

  1. Run the create_conv_layer function with the preceding input parameters:
# Convolutional Layer 1
conv1 <- create_conv_layer(input=x_image,
num_input_channels=num_channels,
filter_size=filter_size1,
num_filters=num_filters1,
use_pooling=TRUE)
  1. Extract the layers of the first convolution layer:
layer_conv1 <- conv1$layer
conv1_images <- conv1$layer$eval(feed_dict = dict(x = train_data$images...
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