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Scala for Machine Learning, Second Edition

Scala for Machine Learning, Second Edition

By : R. Nicolas
4.5 (2)
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Scala for Machine Learning, Second Edition

Scala for Machine Learning, Second Edition

4.5 (2)
By: R. Nicolas

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 (21 chapters)
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20
Index

Mathematics

This section describes very briefly some of the mathematical concepts used in the book.

Linear algebra

Many algorithms used in machine learning such as minimization of a convex loss function, principal component analysis, or least squares regression involves invariably manipulation and transformation of matrices. There are many good books on the subject, from the inexpensive [A:2] to the sophisticated [A:3].

QR decomposition

The QR decomposition (also known as QR factorization) is the decomposition of a matrix A into a product of an orthogonal matrix Q and upper triangular matrix R. A=QR and QT Q=I [A:4].

The decomposition is unique if A is a real, square, and invertible matrix. In the case of a rectangle matrix A, m by n with m > n the decomposition is implemented as the dot product of two vector of matrices: A = [Q1 , Q2 ].[R1 , R2 ]T where Q1 is an m by n matrix, Q2 is an m by n matrix, R1 is n by n and an upper triangle matrix, R2 is an m by n null matrix.

QR decomposition...

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