Book Image

Practical Big Data Analytics

By : Nataraj Dasgupta
Book Image

Practical Big Data Analytics

By: Nataraj Dasgupta

Overview of this book

Big Data analytics relates to the strategies used by organizations to collect, organize, and analyze large amounts of data to uncover valuable business insights that cannot be analyzed through traditional systems. Crafting an enterprise-scale cost-efficient Big Data and machine learning solution to uncover insights and value from your organization’s data is a challenge. Today, with hundreds of new Big Data systems, machine learning packages, and BI tools, selecting the right combination of technologies is an even greater challenge. This book will help you do that. With the help of this guide, you will be able to bridge the gap between the theoretical world of technology and the practical reality of building corporate Big Data and data science platforms. You will get hands-on exposure to Hadoop and Spark, build machine learning dashboards using R and R Shiny, create web-based apps using NoSQL databases such as MongoDB, and even learn how to write R code for neural networks. By the end of the book, you will have a very clear and concrete understanding of what Big Data analytics means, how it drives revenues for organizations, and how you can develop your own Big Data analytics solution using the different tools and methods articulated in this book.
Table of Contents (16 chapters)
Title Page
Packt Upsell
Contributors
Preface

Subdividing supervised machine learning


Supervised machine learning can be further subdivided into exercises that involve either of the following:

  • Classification
  • Regression

The concepts are quite straightforward.

Classification involves a machine learning task that has a discrete outcome - a categorical outcome. All nouns are categorical variables, such as fruits, trees, color, and true/false.

The outcome variables in classification exercises are also known as discrete or categorical variables.

Some examples include:

  • Identifying the fruit given size, weight, and shape
  • Identifying numbers given a set of images of numbers (as shown in the earlier chapter)
  • Identifying objects on the streets
  • Identifying playing cards as diamonds, spades, hearts and clubs
  • Identifying the class rank of a student based on the student's grade
  • The last one might not seem obvious, but a rank, that is, 1st, 2nd, 3rd denotes a fixed category. A student could rank, say, 1st or 2nd, but not have a rank of 1.5!

Images of some atypical...