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R Machine Learning By Example

You're reading from   R Machine Learning By Example Understand the fundamentals of machine learning with R and build your own dynamic algorithms to tackle complicated real-world problems successfully

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Product type Paperback
Published in Mar 2016
Publisher
ISBN-13 9781784390846
Length 340 pages
Edition 1st Edition
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Author (1):
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Raghav Bali Raghav Bali
Author Profile Icon Raghav Bali
Raghav Bali
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Table of Contents (10) Chapters Close

Preface 1. Getting Started with R and Machine Learning FREE CHAPTER 2. Let's Help Machines Learn 3. Predicting Customer Shopping Trends with Market Basket Analysis 4. Building a Product Recommendation System 5. Credit Risk Detection and Prediction – Descriptive Analytics 6. Credit Risk Detection and Prediction – Predictive Analytics 7. Social Media Analysis – Analyzing Twitter Data 8. Sentiment Analysis of Twitter Data Index

Summary

Twitter is a goldmine for data science, with interesting patterns and insights spread all across it. Its constant flow of user-generated content, coupled with unique, interest-based relationships, present opportunities to understand human dynamics up close. Sentiments Analysis is one such field where Twitter provides the right set of ingredients to understand what and how we present and share opinions about products, brands, people, and so on.

Throughout this chapter, we have looked at the basics of Sentiment Analysis, key terms, and areas of application. We have also looked into the various challenges posed while performing sentiment analysis. We have looked at various commonly-used feature extraction methods such as tf-idf, Ngrams, POS, negation, and so on for performing sentiment analysis (or textual analysis in general). We have built on our code base from the previous chapter to streamline and structure utility functions for reuse. We have performed polarity analysis using Twitter...

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