Book Image

Essential PySpark for Scalable Data Analytics

By : Sreeram Nudurupati
Book Image

Essential PySpark for Scalable Data Analytics

By: Sreeram Nudurupati

Overview of this book

Apache Spark is a unified data analytics engine designed to process huge volumes of data quickly and efficiently. PySpark is Apache Spark's Python language API, which offers Python developers an easy-to-use scalable data analytics framework. Essential PySpark for Scalable Data Analytics starts by exploring the distributed computing paradigm and provides a high-level overview of Apache Spark. You'll begin your analytics journey with the data engineering process, learning how to perform data ingestion, cleansing, and integration at scale. This book helps you build real-time analytics pipelines that help you gain insights faster. You'll then discover methods for building cloud-based data lakes, and explore Delta Lake, which brings reliability to data lakes. The book also covers Data Lakehouse, an emerging paradigm, which combines the structure and performance of a data warehouse with the scalability of cloud-based data lakes. Later, you'll perform scalable data science and machine learning tasks using PySpark, such as data preparation, feature engineering, and model training and productionization. Finally, you'll learn ways to scale out standard Python ML libraries along with a new pandas API on top of PySpark called Koalas. By the end of this PySpark book, you'll be able to harness the power of PySpark to solve business problems.
Table of Contents (19 chapters)
1
Section 1: Data Engineering
6
Section 2: Data Science
13
Section 3: Data Analysis

Chapter 7: Supervised Machine Learning

In the previous two chapters, you were introduced to the machine learning process, the various stages involved, and the first step of the process, namely feature engineering. Equipped with the fundamental knowledge of the machine learning process and with a usable set of machine learning features, you are ready to move on to the core part of the machine learning process, namely model training.

In this chapter, you will be introduced to the supervised learning category of machine learning algorithms, where you will learn about parametric and non-parametric algorithms, as well as gain the knowledge required to solve regression and classification problems using machine learning. Finally, you will implement a few regression algorithms using the Spark machine learning library, such as linear regression and decision trees, and a few classification algorithms such as logistic regression, naïve Bayes, and support vector machines. Tree ensemble...