Book Image

The TensorFlow Workshop

By : Matthew Moocarme, Abhranshu Bagchi, Anthony So, Anthony Maddalone
Book Image

The TensorFlow Workshop

By: Matthew Moocarme, Abhranshu Bagchi, Anthony So, Anthony Maddalone

Overview of this book

Getting to grips with tensors, deep learning, and neural networks can be intimidating and confusing for anyone, no matter their experience level. The breadth of information out there, often written at a very high level and aimed at advanced practitioners, can make getting started even more challenging. If this sounds familiar to you, The TensorFlow Workshop is here to help. Combining clear explanations, realistic examples, and plenty of hands-on practice, it’ll quickly get you up and running. You’ll start off with the basics – learning how to load data into TensorFlow, perform tensor operations, and utilize common optimizers and activation functions. As you progress, you’ll experiment with different TensorFlow development tools, including TensorBoard, TensorFlow Hub, and Google Colab, before moving on to solve regression and classification problems with sequential models. Building on this solid foundation, you’ll learn how to tune models and work with different types of neural network, getting hands-on with real-world deep learning applications such as text encoding, temperature forecasting, image augmentation, and audio processing. By the end of this deep learning book, you’ll have the skills, knowledge, and confidence to tackle your own ambitious deep learning projects with TensorFlow.
Table of Contents (13 chapters)
Preface

Feature Extraction

TensorFlow Hub provides the option of downloading a model without the final layer. In this case, you will be using a TensorFlow module as a feature extractor; you can design your custom final layers on top of it. In TensorFlow Hub, a module used for feature extraction is known as a feature vector:

import tensorflow_hub as hub
MODULE_HANDLE = 'https://tfhub.dev/google/efficientnet/b0'\
                '/feature-vector/1'
module = hub.load(MODULE_HANDLE)

Note

To find all the available feature vectors on TensorFlow Hub, you can use its search engine: https://tfhub.dev/s?module-type=image-feature-vector&tf-version=tf2.

Once loaded, you can add your own final layer to the feature vector with the Sequential API:

model = tf.keras.Sequential([
    hub.KerasLayer(MODULE_HANDLE, input_shape=(224, 224, 3)),
    tf.keras...