Book Image

Scala for Machine Learning, Second Edition - Second Edition

Book Image

Scala for Machine Learning, Second Edition - Second Edition

Overview of this book

The discovery of information through data clustering and classification is becoming a key differentiator for competitive organizations. Machine learning applications are everywhere, from self-driving cars, engineering design, logistics, manufacturing, and trading strategies, to detection of genetic anomalies. The book is your one stop guide that introduces you to the functional capabilities of the Scala programming language that are critical to the creation of machine learning algorithms such as dependency injection and implicits. You start by learning data preprocessing and filtering techniques. Following this, you'll move on to unsupervised learning techniques such as clustering and dimension reduction, followed by probabilistic graphical models such as Naïve Bayes, hidden Markov models and Monte Carlo inference. Further, it covers the discriminative algorithms such as linear, logistic regression with regularization, kernelization, support vector machines, neural networks, and deep learning. You’ll move on to evolutionary computing, multibandit algorithms, and reinforcement learning. Finally, the book includes a comprehensive overview of parallel computing in Scala and Akka followed by a description of Apache Spark and its ML library. With updated codes based on the latest version of Scala and comprehensive examples, this book will ensure that you have more than just a solid fundamental knowledge in machine learning with Scala.
Table of Contents (27 chapters)
Scala for Machine Learning Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Index

Chapter 11. Deep Learning

This chapter leverages the concepts and components of the multilayer perceptron described in the previous chapter and applies them to deep learning architectures. There has been quite a bit of buzz surrounding deep learning lately, although the algorithms presented in this chapter were introduced 20 to 30 years ago.

The recent advance in neural networks has as much to do with the availability of powerful hardware such as memory-based distributed computing and GPU as the academic research.

This chapter describes the following:

  • Sparse autoencoders as a dimension reduction technique for non-linear problems

  • Binary restricted Boltzmann machines as the core foundation of deep generative models for unsupervised learning

  • Convolutional neural networks as an efficient alternative to the multilayer perceptron for supervised learning

The first two neural architectures do not require labeled data and rely on the input data itself to extract a model (weights).

The sections on the...