Book Image

Hands-On Data Analysis with Scala

By : Rajesh Gupta
Book Image

Hands-On Data Analysis with Scala

By: Rajesh Gupta

Overview of this book

Efficient business decisions with an accurate sense of business data helps in delivering better performance across products and services. This book helps you to leverage the popular Scala libraries and tools for performing core data analysis tasks with ease. The book begins with a quick overview of the building blocks of a standard data analysis process. You will learn to perform basic tasks like Extraction, Staging, Validation, Cleaning, and Shaping of datasets. You will later deep dive into the data exploration and visualization areas of the data analysis life cycle. You will make use of popular Scala libraries like Saddle, Breeze, Vegas, and PredictionIO for processing your datasets. You will learn statistical methods for deriving meaningful insights from data. You will also learn to create applications for Apache Spark 2.x on complex data analysis, in real-time. You will discover traditional machine learning techniques for doing data analysis. Furthermore, you will also be introduced to neural networks and deep learning from a data analysis standpoint. By the end of this book, you will be capable of handling large sets of structured and unstructured data, perform exploratory analysis, and building efficient Scala applications for discovering and delivering insights
Table of Contents (14 chapters)
Free Chapter
1
Section 1: Scala and Data Analysis Life Cycle
7
Section 2: Advanced Data Analysis and Machine Learning
10
Section 3: Real-Time Data Analysis and Scalability

Visualizing data

Graphs and charts are used to gain a better understanding of the data relationship. We will use the following to explore data visually:

  • Combination of Spark and Vegas viz
  • Spark Notebook

Vegas viz for data visualization

Vegas viz is a MatPlotLib-like library for Scala and Spark. The documentation for this library can be found at https://github.com/vegas-viz/Vegas. Spark does not contain any built-in support for data visualization. Vegas viz provides a convenient mechanism to add visualization to a Spark program written in Scala.

In order to use this library with Spark, let's add the following dependencies to build.sbt:

libraryDependencies ++= Seq(
"org.apache.spark" %% "spark-sql&quot...