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  • Book Overview & Buying Apache Spark 2.x Cookbook
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Apache Spark 2.x Cookbook

Apache Spark 2.x Cookbook

By : Yadav
3.3 (3)
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Apache Spark 2.x Cookbook

Apache Spark 2.x Cookbook

3.3 (3)
By: Yadav

Overview of this book

While Apache Spark 1.x gained a lot of traction and adoption in the early years, Spark 2.x delivers notable improvements in the areas of API, schema awareness, Performance, Structured Streaming, and simplifying building blocks to build better, faster, smarter, and more accessible big data applications. This book uncovers all these features in the form of structured recipes to analyze and mature large and complex sets of data. Starting with installing and configuring Apache Spark with various cluster managers, you will learn to set up development environments. Further on, you will be introduced to working with RDDs, DataFrames and Datasets to operate on schema aware data, and real-time streaming with various sources such as Twitter Stream and Apache Kafka. You will also work through recipes on machine learning, including supervised learning, unsupervised learning & recommendation engines in Spark. Last but not least, the final few chapters delve deeper into the concepts of graph processing using GraphX, securing your implementations, cluster optimization, and troubleshooting.
Table of Contents (13 chapters)
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Doing classification with Naïve Bayes


Let's consider building an e-mail spam filter using machine learning. Here we are interested in two classes: spam for unsolicited messages and non-spam for regular e-mails:

The first challenge is that given an e-mail, how do we represent it as feature vector x. An e-mail is just a bunch of text or a collection of words (therefore, this problem domain falls into a broader category called text classification). Let's represent an e-mail with a feature vector with the length equal to the size of the dictionary. If a given word in a dictionary appears in an e-mail, the value will be 1, otherwise 0. Let's build a vector representing the e-mail with the online pharmacy sale content:

The dictionary of words in this feature vector is called vocabulary, and the dimensions of the vector are the same as the size of the vocabulary. If the vocabulary size is 10,000, the possible values in this feature vector will be 210,000.

Our goal is to model the probability of x...

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Apache Spark 2.x Cookbook
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