Book Image

R Data Analysis Projects

Book Image

R Data Analysis Projects

Overview of this book

R offers a large variety of packages and libraries for fast and accurate data analysis and visualization. As a result, it’s one of the most popularly used languages by data scientists and analysts, or anyone who wants to perform data analysis. This book will demonstrate how you can put to use your existing knowledge of data analysis in R to build highly efficient, end-to-end data analysis pipelines without any hassle. You’ll start by building a content-based recommendation system, followed by building a project on sentiment analysis with tweets. You’ll implement time-series modeling for anomaly detection, and understand cluster analysis of streaming data. You’ll work through projects on performing efficient market data research, building recommendation systems, and analyzing networks accurately, all provided with easy to follow codes. With the help of these real-world projects, you’ll get a better understanding of the challenges faced when building data analysis pipelines, and see how you can overcome them without compromising on the efficiency or accuracy of your systems. The book covers some popularly used R packages such as dplyr, ggplot2, RShiny, and others, and includes tips on using them effectively. By the end of this book, you’ll have a better understanding of data analysis with R, and be able to put your knowledge to practical use without any hassle.
Table of Contents (15 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Summary


We introduced the problem of record linkage and emphasized its importance. We introduced the package, RecordLinkage, in R to solve record linkage problems. We started with generating features, string- and phonetic-based, for record pairs so that they can be processed further down the pipeline to dedup records. We covered expectation maximization and weights-based methods to perform a dedup task on our record pairs. Finally, we wrapped up the chapter by introducing machine learning methods for dedup tasks. Under unsupervised methods, K-means clustering was discussed. We further leveraged the output of the K-means algorithm to train a supervised model.

In the next chapter we go through streaming data and its challenges. We will build a stream clustering algorithm for a given streaming data.