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

Summary


This chapter barely scratches the surface of the topic of generalized linear models with the description of linear and logistic regression algorithms. Regression models, along with Naïve Bayes classification, are the most well-understood techniques by those without a deep knowledge of statistics or machine learning.

At the end of this chapter, you hopefully have a grasp of the following:

  • Linear and non-linear least squares-based optimization

  • The implementation of ordinary least square regression, as well as logistic regression as classifiers and predictive models

  • The purpose of regularization as illustrated with ridge regression

The regression models do not impose the condition that the features have to be independent, contrary to the Naïve Bayes models (refer to Chapter 6, Naïve Bayes Classifiers). However, these models do not take into account the sequential nature of time series commonly used in dynamic asset pricing. The next chapter introduces models for sequential data, with two...