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Deep Learning with TensorFlow. - Second Edition

You're reading from  Deep Learning with TensorFlow. - Second Edition

Product type Book
Published in Mar 2018
Publisher Packt
ISBN-13 9781788831109
Pages 484 pages
Edition 2nd Edition
Languages
Authors (2):
Giancarlo Zaccone Giancarlo Zaccone
Profile icon Giancarlo Zaccone
Md. Rezaul Karim Md. Rezaul Karim
Profile icon Md. Rezaul Karim
View More author details
Toc

Table of Contents (15) Chapters close

Deep Learning with TensorFlow - Second Edition
Contributors
Preface
Other Books You May Enjoy
1. Getting Started with Deep Learning 2. A First Look at TensorFlow 3. Feed-Forward Neural Networks with TensorFlow 4. Convolutional Neural Networks 5. Optimizing TensorFlow Autoencoders 6. Recurrent Neural Networks 7. Heterogeneous and Distributed Computing 8. Advanced TensorFlow Programming 9. Recommendation Systems Using Factorization Machines 10. Reinforcement Learning Index

How does an autoencoder work?


Autoencoding is a data compression technique where the compression and decompression functions are data-specific, lossy, and learned automatically from samples rather than human-crafted manual features. Additionally, in almost all contexts where the term autoencoder is used, the compression and decompression functions are implemented with NNs.

An autoencoder is a network with three or more layers, where the input and the output layers have the same number of neurons, and those intermediate (hidden layers) have a lower number of neurons. The network is trained to reproduce output simply, for each piece of input data, the same pattern of activity in the input.

The remarkable aspect of autoencoders is that, due to the lower number of neurons in the hidden layer, if the network can learn from examples and generalize to an acceptable extent, it performs data compression: the status of the hidden neurons provides, for each example, a compressed version of the input...

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