For regression tasks where the goal is to predict a numerical output, such as price or temperature, we've seen that linear regression can potentially be a good starting point. It is simple to train and easy to interpret even though, as a model, it makes strict assumptions about the data and the underlying target function. Before studying more advanced techniques to tackle regression problems, we'll introduce logistic regression. Despite its somewhat misleading name, this is actually our first model for performing classification. As we learned in Chapter 1, Gearing Up for Predictive Modeling, in classification problems, our output is qualitative and is thus comprised of a finite set of values, which we call classes. We'll begin by thinking about the binary classification scenario, where we are trying to distinguish between two classes, which we'll arbitrarily label as 0 and 1, and later on, we'll extend this to distinguishing between multiple classes.
Mastering Predictive Analytics with R
By :
Mastering Predictive Analytics with R
By:
Overview of this book
Table of Contents (19 chapters)
Mastering Predictive Analytics with R
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Gearing Up for Predictive Modeling
Linear Regression
Logistic Regression
Neural Networks
Support Vector Machines
Tree-based Methods
Ensemble Methods
Probabilistic Graphical Models
Time Series Analysis
Topic Modeling
Recommendation Systems
Index
Customer Reviews