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Hands-On Neural Networks with Keras

You're reading from   Hands-On Neural Networks with Keras Design and create neural networks using deep learning and artificial intelligence principles

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Product type Paperback
Published in Mar 2019
Publisher Packt
ISBN-13 9781789536089
Length 462 pages
Edition 1st Edition
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Author (1):
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Niloy Purkait Niloy Purkait
Author Profile Icon Niloy Purkait
Niloy Purkait
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Table of Contents (16) Chapters Close

Preface 1. Section 1: Fundamentals of Neural Networks FREE CHAPTER
2. Overview of Neural Networks 3. A Deeper Dive into Neural Networks 4. Signal Processing - Data Analysis with Neural Networks 5. Section 2: Advanced Neural Network Architectures
6. Convolutional Neural Networks 7. Recurrent Neural Networks 8. Long Short-Term Memory Networks 9. Reinforcement Learning with Deep Q-Networks 10. Section 3: Hybrid Model Architecture
11. Autoencoders 12. Generative Networks 13. Section 4: Road Ahead
14. Contemplating Present and Future Developments 15. Other Books You May Enjoy

Predicting an output per time step

Next, we will look at the equation that leverages the activation value that we just calculated to produce a prediction ( at the given time step (t). This is represented like so:

= g [ (Way x at) + by ]

This tells us is that our layer's prediction at a time step is determined by computing a dot product of yet another temporally shared output matrix of weights, along with the activation output (at) we just computed using the earlier equation.

Due to the sharing of the weight parameters, information from previous time steps is preserved and passed through the recurrent layer to inform the current prediction. For example, the prediction at time step three leverages information from the previous time steps, as shown by the green arrow here:

To formalize these computations, we mathematically show the relation between the predicted output at...

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