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Machine Learning with R

Machine Learning with R - Second Edition

By : Brett Lantz
4.5 (40)
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Machine Learning with R

Machine Learning with R

4.5 (40)
By: Brett Lantz

Overview of this book

Updated and upgraded to the latest libraries and most modern thinking, Machine Learning with R, Second Edition provides you with a rigorous introduction to this essential skill of professional data science. Without shying away from technical theory, it is written to provide focused and practical knowledge to get you building algorithms and crunching your data, with minimal previous experience. With this book, you'll discover all the analytical tools you need to gain insights from complex data and learn how to choose the correct algorithm for your specific needs. Through full engagement with the sort of real-world problems data-wranglers face, you'll learn to apply machine learning methods to deal with common tasks, including classification, prediction, forecasting, market analysis, and clustering.
Table of Contents (14 chapters)
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13
Index

Chapter 2. Managing and Understanding Data

A key early component of any machine learning project involves managing and understanding data. Although this may not be as gratifying as building and deploying models—the stages in which you begin to see the fruits of your labor—it is unwise to ignore this important preparatory work.

Any learning algorithm is only as good as its input data, and in many cases, the input data is complex, messy, and spread across multiple sources and formats. Because of this complexity, often the largest portion of effort invested in machine learning projects is spent on data preparation and exploration.

This chapter approaches these topics in three ways. The first section discusses the basic data structures R uses to store data. You will become very familiar with these structures as you create and manipulate datasets. The second section is practical, as it covers several functions that are useful to get data in and out of R. In the third section...

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Machine Learning with R
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