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

Fetching tensor values with tf.Session.run()


You can fetch the tensor values you want to print with tf.Session.run(). The values are returned as a NumPy array and can be printed or logged with Python statements. This is the simplest and easiest approach, with the biggest drawback being that the computation graph executes all the dependent paths, starting from the fetched tensor, and if those paths include the training operations, then it advances one step or one epoch. 

Therefore, most of the time you would not call tf.Session.run() to fetch tensors in the middle of the graph, but you would execute the whole graph and fetch all the tensors, the ones you need to debug along with the ones you do not need to debug.

Note

The function tf.Session.partial_run() is also available for situations where you may want to execute part of the graph, but it is a highly experimental API and not ready for production use.