Book Image

Python: Advanced Guide to Artificial Intelligence

By : Giuseppe Bonaccorso, Rajalingappaa Shanmugamani
Book Image

Python: Advanced Guide to Artificial Intelligence

By: Giuseppe Bonaccorso, Rajalingappaa Shanmugamani

Overview of this book

This Learning Path is your complete guide to quickly getting to grips with popular machine learning algorithms. You'll be introduced to the most widely used algorithms in supervised, unsupervised, and semi-supervised machine learning, and learn how to use them in the best possible manner. Ranging from Bayesian models to the MCMC algorithm to Hidden Markov models, this Learning Path will teach you how to extract features from your dataset and perform dimensionality reduction by making use of Python-based libraries. You'll bring the use of TensorFlow and Keras to build deep learning models, using concepts such as transfer learning, generative adversarial networks, and deep reinforcement learning. Next, you'll learn the advanced features of TensorFlow1.x, such as distributed TensorFlow with TF clusters, deploy production models with TensorFlow Serving. You'll implement different techniques related to object classification, object detection, image segmentation, and more. By the end of this Learning Path, you'll have obtained in-depth knowledge of TensorFlow, making you the go-to person for solving artificial intelligence problems This Learning Path includes content from the following Packt products: • Mastering Machine Learning Algorithms by Giuseppe Bonaccorso • Mastering TensorFlow 1.x by Armando Fandango • Deep Learning for Computer Vision by Rajalingappaa Shanmugamani
Table of Contents (31 chapters)
Title Page
About Packt
Contributors
Preface
19
Tensor Processing Units
Index

Keras for RNN


Creating RNN in Keras is much easier as compared to the TensorFlow. To build the RNN model, you have to add layers from the kera.layers.recurrent module. Keras provides the following kinds of recurrent layers in the keras.layers.recurrent module:

  • SimpleRNN
  • LSTM
  • GRU

Stateful Models

Keras recurrent layers also support RNN models that save state between the batches. You can create a stateful RNN, LSTM, or GRU model by passing stateful parameters as True. For stateful models, the batch size specified for the inputs has to be a fixed value. In stateful models, the hidden state learnt from training a batch is reused for the next batch. If you want to reset the memory at some point during training, it can be done with extra code by calling the model.reset_states() or layer.reset_states() functions.

Note

The latest documentation on Recurrent Layers in Keras can be found at the following link: https://keras.io/layers/recurrent/.