Book Image

Practical Machine Learning with R

By : Brindha Priyadarshini Jeyaraman, Ludvig Renbo Olsen, Monicah Wambugu
Book Image

Practical Machine Learning with R

By: Brindha Priyadarshini Jeyaraman, Ludvig Renbo Olsen, Monicah Wambugu

Overview of this book

With huge amounts of data being generated every moment, businesses need applications that apply complex mathematical calculations to data repeatedly and at speed. With machine learning techniques and R, you can easily develop these kinds of applications in an efficient way. Practical Machine Learning with R begins by helping you grasp the basics of machine learning methods, while also highlighting how and why they work. You will understand how to get these algorithms to work in practice, rather than focusing on mathematical derivations. As you progress from one chapter to another, you will gain hands-on experience of building a machine learning solution in R. Next, using R packages such as rpart, random forest, and multiple imputation by chained equations (MICE), you will learn to implement algorithms including neural net classifier, decision trees, and linear and non-linear regression. As you progress through the book, you’ll delve into various machine learning techniques for both supervised and unsupervised learning approaches. In addition to this, you’ll gain insights into partitioning the datasets and mechanisms to evaluate the results from each model and be able to compare them. By the end of this book, you will have gained expertise in solving your business problems, starting by forming a good problem statement, selecting the most appropriate model to solve your problem, and then ensuring that you do not overtrain it.
Table of Contents (8 chapters)

Installing Libraries

  1. Click on packages tab as shown below:
    Figure 0.7: Packages in R Studio
  2. Select the packages that needs to be installed. The package will be attached on the left as shown below:
    Figure 0.8: Attaching the package MASS
    Figure 0.8: Attaching the package MASS
  3. Now the function of this library can be used. To install packages that are not displayed in the above, click on the Install option:
    Figure 0.9: Install option
    Figure 0.9: Install option
  4. Type the package you would want to install. For instance, select ggplot2 and click Install:
Figure 0.10: Install packages pop-up
Figure 0.10: Install packages pop-up

The status of the installation of the package can be viewed in the console.

Alternatively, the install.packages("packagename") can also be used.