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 10. Multilayer Perceptron

The concept of artificial neural networks is rooted in biology with the idea of mimicking some of the brain's functions. Computer scientists thought that such a concept could be applied to the broader problem of parallel processing [10:1]. The key question in the 1970s was: how can we distribute the computation of tasks across a network or cluster of machines without having to program each machine? One simple solution consists of training each machine to execute the given tasks. The popularity of neural networks surged in the 1990s.

At its core, a neural network is a nonlinear statistical model that leverages the logistic regression to create a nonlinear distributed model.

Note

Deep learning:

Deep learning techniques (introduced in the next chapter) extend the concept of artificial neural networks. This chapter should be regarded as the first part of the presentation of an algorithm generally associated with deep learning.

In this chapter, you will move beyond...