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

Pre-Trained Sets and Transfer Learning

Humans learn by experience. We apply the knowledge we gain in one situation to similar situations we face in the future. Suppose you want to learn how to drive an SUV. You have never driven an SUV; all you know is how to drive a small hatchback car.

The dimensions of the SUV are considerably larger than the hatchback, so navigating the SUV in traffic will surely be a challenge. Still, some basic systems (such as the clutch, accelerator, and brakes) remain similar to that of the hatchback. So, knowing how to drive a hatchback will surely be of great help to you when you are learning to drive the SUV. All the knowledge that you acquired while driving a hatchback can be used when you learn to drive a big SUV.

This is precisely what transfer learning is. By definition, transfer learning is a concept in machine learning in which we store and use the knowledge gained in one activity while learning another similar activity. The hatchback-SUV model...

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