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Big Data Analytics with Java

You're reading from   Big Data Analytics with Java Data analysis, visualization & machine learning techniques

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781787288980
Length 418 pages
Edition 1st Edition
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Concepts
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Author (1):
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RAJAT MEHTA RAJAT MEHTA
Author Profile Icon RAJAT MEHTA
RAJAT MEHTA
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Table of Contents (15) Chapters Close

Preface 1. Big Data Analytics with Java FREE CHAPTER 2. First Steps in Data Analysis 3. Data Visualization 4. Basics of Machine Learning 5. Regression on Big Data 6. Naive Bayes and Sentiment Analysis 7. Decision Trees 8. Ensembling on Big Data 9. Recommendation Systems 10. Clustering and Customer Segmentation on Big Data 11. Massive Graphs on Big Data 12. Real-Time Analytics on Big Data 13. Deep Learning Using Big Data Index

Chapter 6. Naive Bayes and Sentiment Analysis

A few years back one of my friends and I built a forum where developers could post useful tips regarding the technology they were using. I wished I knew about the Naive Bayes machine learning algorithm then. It could have helped me to filter objectionable content that was posted on that forum. In the previous chapter, we saw two algorithms that can be used to predict continuous values or to classify between discrete sets of values. Both the approaches predicted a definite value (whether it was continuous or discrete), but they did not give us a probability of occurrences of our best guesses. Naive Bayes gives us the predicted results with a probability attached to it, so in a set of results for same category we can pick the one with the highest probability.

In this chapter, we will cover:

  • General concepts about probability and conditional probability. This section will be basic and users who already know this can skip this section.
  • We...
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