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Scala and Spark for Big Data Analytics

You're reading from   Scala and Spark for Big Data Analytics Explore the concepts of functional programming, data streaming, and machine learning

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781785280849
Length 796 pages
Edition 1st Edition
Languages
Concepts
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Authors (2):
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Sridhar Alla Sridhar Alla
Author Profile Icon Sridhar Alla
Sridhar Alla
Md. Rezaul Karim Md. Rezaul Karim
Author Profile Icon Md. Rezaul Karim
Md. Rezaul Karim
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Toc

Table of Contents (19) Chapters Close

Preface 1. Introduction to Scala 2. Object-Oriented Scala FREE CHAPTER 3. Functional Programming Concepts 4. Collection APIs 5. Tackle Big Data – Spark Comes to the Party 6. Start Working with Spark – REPL and RDDs 7. Special RDD Operations 8. Introduce a Little Structure - Spark SQL 9. Stream Me Up, Scotty - Spark Streaming 10. Everything is Connected - GraphX 11. Learning Machine Learning - Spark MLlib and Spark ML 12. My Name is Bayes, Naive Bayes 13. Time to Put Some Order - Cluster Your Data with Spark MLlib 14. Text Analytics Using Spark ML 15. Spark Tuning 16. Time to Go to ClusterLand - Deploying Spark on a Cluster 17. Testing and Debugging Spark 18. PySpark and SparkR

The decision trees

In this section, we will discuss the DT algorithm in detail. A comparative analysis of Naive Bayes and DT will be discussed too. DTs are commonly considered as a supervised learning technique used for solving classification and regression tasks. A DT is simply a decision support tool that uses a tree-like graph (or a model of decisions) and their possible consequences, including chance event outcomes, resource costs, and utility. More technically, each branch in a DT represents a possible decision, occurrence, or reaction in terms of statistical probability.

Compared to Naive Bayes, DT is a far more robust classification technique. The reason is that at first DT splits the features into training and test set. Then it produces a good generalization to infer the predicted labels or classes. Most interestingly, DT algorithm can handle both binary and multiclass...

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