Book Image

Data Science for Marketing Analytics

By : Tommy Blanchard, Debasish Behera, Pranshu Bhatnagar
Book Image

Data Science for Marketing Analytics

By: Tommy Blanchard, Debasish Behera, Pranshu Bhatnagar

Overview of this book

Data Science for Marketing Analytics covers every stage of data analytics, from working with a raw dataset to segmenting a population and modeling different parts of the population based on the segments. The book starts by teaching you how to use Python libraries, such as pandas and Matplotlib, to read data from Python, manipulate it, and create plots, using both categorical and continuous variables. Then, you'll learn how to segment a population into groups and use different clustering techniques to evaluate customer segmentation. As you make your way through the chapters, you'll explore ways to evaluate and select the best segmentation approach, and go on to create a linear regression model on customer value data to predict lifetime value. In the concluding chapters, you'll gain an understanding of regression techniques and tools for evaluating regression models, and explore ways to predict customer choice using classification algorithms. Finally, you'll apply these techniques to create a churn model for modeling customer product choices. By the end of this book, you will be able to build your own marketing reporting and interactive dashboard solutions.
Table of Contents (12 chapters)
Data Science for Marketing Analytics
Preface

Evaluating Clustering


Being able to perform clustering in different ways is only useful if you know how to evaluate different clustering methods and compare them in an objective way. Subjective methods, such as visual inspection, can always be used, but the silhouette score is a powerful objective method that can be used with data that is more difficult to visualize. We’ll learn more about this in the next section.

Silhouette Score

The silhouette score is a formal measure of how well a clustering fits the data. The higher the score, the better. Typically, the score is calculated for each data point separately, and the average is taken as a measure of how well the model fits the whole dataset altogether.

There are two main components to the score. The first component measures how well the data point fits into the cluster that it is assigned to. This is defined as the average distance between it and all other members of that same cluster. The second component measures how well the data point...