Applied Unsupervised Learning with R: Uncover hidden relationships and patterns with k-means clustering, hierarchical clustering, and PCA

R is not an easy script language so, as a moderatly skilled programmer I find the lack of reption helpful.

This book is very helpful in understanding the important unsupervised learning methods, such as different clustering methods, PCA. It provides great examples to use R to solve problems. Excellent for beginner to follow and to be able to use R to do the analysis. The examples are all business questions, making it easier to relate to my business questions. In addition to that, this book explains the theory behind the algorithms in languages that are easy to understand. Overall, it is an amazing book for me to study and apply unsupervised learning algorithms!

I would adopt this as a textbook if I teach a class on unsupervised learning.