Book Image

Big Data Analytics with Java

Book Image

Big Data Analytics with Java


Overview of this book

This book covers case studies such as sentiment analysis on a tweet dataset, recommendations on a movielens dataset, customer segmentation on an ecommerce dataset, and graph analysis on actual flights dataset. This book is an end-to-end guide to implement analytics on big data with Java. Java is the de facto language for major big data environments, including Hadoop. This book will teach you how to perform analytics on big data with production-friendly Java. This book basically divided into two sections. The first part is an introduction that will help the readers get acquainted with big data environments, whereas the second part will contain a hardcore discussion on all the concepts in analytics on big data. It will take you from data analysis and data visualization to the core concepts and advantages of machine learning, real-life usage of regression and classification using Naïve Bayes, a deep discussion on the concepts of clustering,and a review of simple neural networks on big data using deepLearning4j or plain Java Spark code. This book is a must-have book for Java developers who want to start learning big data analytics and want to use it in the real world.
Table of Contents (21 chapters)
Big Data Analytics with Java
About the Author
About the Reviewers
Customer Feedback
Free Chapter
Big Data Analytics with Java
Ensembling on Big Data
Real-Time Analytics on Big Data

Introduction to neural networks

Our human brain has millions of neurons that talk and transfer signals to each other. So, when one neuron calculates a signal and transfers it to another neuron, the second neuron that is connected to the first neuron becomes their input and acts on it. In this way, the initial input goes through various neurons while being altered at each level until a final deduction can be made. You can think of our brain as a graph of these neurons interconnected to each other, and sending signal or inputs to each other.

Let's see how a typical neuron in the human brain looks:

This picture of a human neuron has been taken from Wikipedia and can be seen at this link: The neuron has some important components, as seen in the labels in the image. They are explained as follows:

  • Dendrite: These are hair-like parts. They connect the neuron to other neurons, and they are used in taking input from other neurons.

  • Cell Body: This is the place...