Applied Unsupervised Learning with R

Design clever algorithms that discover hidden patterns and draw responses from unstructured unlabeled data.Key FeaturesBuild state-of-the-art algorithms that can solve your business problemsLearn how to find hidden patterns in your dataRevise key concepts with hands-on exercises using real-world datasetsBook DescriptionStarting with the basics Applied Unsupervised Learning with R explains clustering methods distribution analysis data encoders and features of R that enable you to understand your data better and get answers to your most pressing business questions. This book begins with the most important and commonly used method for unsupervised learning - clustering - and explains the three main clustering algorithms - k-means divisive and agglomerative. Following this youll study market basket analysis kernel density estimation principal component analysis and anomaly detection. Youll be introduced to these methods using code written in R with further instructions on how to work with edit and improve R code. To help you gain a practical understanding the book also features useful tips on applying these methods to real business problems including market segmentation and fraud detection. By working through interesting activities youll explore data encoders and latent variable models. By the end of this book you will have a better understanding of different anomaly detection methods such as outlier detection Mahalanobis distances and contextual and collective anomaly detection.What you will learnImplement clustering methods such as k-means agglomerative and divisiveWrite code in R to analyze market segmentation and consumer behaviorEstimate distribution and probabilities of different outcomesImplement dimension reduction using principal component analysisApply anomaly detection methods to identify fraudDesign algorithms with R and learn how to edit or improve codeWho this book is forApplied Unsupervised Learning with R is designed for business professionals who want to learn about methods to understand their data better and developers who have an interest in unsupervised learning. Although the book is for beginners it will be beneficial to have some basic beginner-level familiarity with R. This includes an understanding of how to open the R console how to read data and how to create a loop. To easily understand the concepts of this book you should also know basic mathematical concepts including exponents square roots means and medians.