Book Image

The Deep Learning with Keras Workshop

By : Matthew Moocarme, Mahla Abdolahnejad, Ritesh Bhagwat
1 (1)
Book Image

The Deep Learning with Keras Workshop

1 (1)
By: Matthew Moocarme, Mahla Abdolahnejad, Ritesh Bhagwat

Overview of this book

New experiences can be intimidating, but not this one! This beginner’s guide to deep learning is here to help you explore deep learning from scratch with Keras, and be on your way to training your first ever neural networks. What sets Keras apart from other deep learning frameworks is its simplicity. With over two hundred thousand users, Keras has a stronger adoption in industry and the research community than any other deep learning framework. The Deep Learning with Keras Workshop starts by introducing you to the fundamental concepts of machine learning using the scikit-learn package. After learning how to perform the linear transformations that are necessary for building neural networks, you'll build your first neural network with the Keras library. As you advance, you'll learn how to build multi-layer neural networks and recognize when your model is underfitting or overfitting to the training data. With the help of practical exercises, you’ll learn to use cross-validation techniques to evaluate your models and then choose the optimal hyperparameters to fine-tune their performance. Finally, you’ll explore recurrent neural networks and learn how to train them to predict values in sequential data. By the end of this book, you'll have developed the skills you need to confidently train your own neural network models.

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Table of Contents (11 chapters)
Preface
About the Book
1
1. Introduction to Machine Learning with Keras
1. Introduction to Machine Learning with Keras
Introduction
Data Representation
Data Preprocessing
Life Cycle of Model Creation
scikit-learn
Keras
Model Training
Model Tuning
Summary
Free Chapter
2
2. Machine Learning versus Deep Learning
2. Machine Learning versus Deep Learning
Introduction
Linear Transformations
Introduction to Keras
Summary
3
3. Deep Learning with Keras
3. Deep Learning with Keras
Introduction
Building Your First Neural Network
Model Evaluation
Summary
4
4. Evaluating Your Model with Cross-Validation Using Keras Wrappers
4. Evaluating Your Model with Cross-Validation Using Keras Wrappers
Introduction
Cross-Validation
Cross-Validation for Deep Learning Models
Model Selection with Cross-Validation
Summary
5
5. Improving Model Accuracy
5. Improving Model Accuracy
Introduction
Regularization
L1 and L2 Regularization
Dropout Regularization
Other Regularization Methods
Hyperparameter Tuning with scikit-learn
Summary
6
6. Model Evaluation
6. Model Evaluation
Introduction
Accuracy
Imbalanced Datasets
Confusion Matrix
Summary
7
7. Computer Vision with Convolutional Neural Networks
7. Computer Vision with Convolutional Neural Networks
Introduction
Computer Vision
Convolutional Neural Networks
The Architecture of a CNN
Image Augmentation
Summary
8
8. Transfer Learning and Pre-Trained Models
8. Transfer Learning and Pre-Trained Models
Introduction
Pre-Trained Sets and Transfer Learning
Fine-Tuning a Pre-Trained Network
Summary
9
9. Sequential Modeling with Recurrent Neural Networks
9. Sequential Modeling with Recurrent Neural Networks
Introduction
Sequential Memory and Sequential Modeling
Recurrent Neural Networks (RNNs)
Long Short-Term Memory (LSTM)
Summary
Appendix
1. Introduction to Machine Learning with Keras
2. Machine Learning versus Deep Learning
3. Deep Learning with Keras
4. Evaluating Your Model with Cross-Validation Using Keras Wrappers
5. Improving Model Accuracy
6. Model Evaluation
7. Computer Vision with Convolutional Neural Networks
8. Transfer Learning and Pre-Trained Models
9. Sequential Modeling with Recurrent Neural Networks

Linear Transformations

In this section, we will introduce linear transformations. Linear transformations are the backbone of modeling with ANNs. In fact, all the processes of ANN modeling can be thought of as a series of linear transformations. The working components of linear transformations are scalars, vectors, matrices, and tensors. Operations such as addition, transposition, and multiplication are performed on these components.

Scalars, Vectors, Matrices, and Tensors

Scalars, vectors, matrices, and tensors are the actual components of any deep learning model. Having a fundamental understanding of how to utilize these components, as well as the operations that can be performed on them, is key to understanding how ANNs operate. Scalars, vectors, and matrices are examples of the general entity known as a tensor, so the term tensors may be used throughout this chapter but may refer to any component. Scalars, vectors, and matrices refer to tensors with a specific number...

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