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Data Science Projects with Python

You're reading from   Data Science Projects with Python A case study approach to gaining valuable insights from real data with machine learning

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Product type Paperback
Published in Jul 2021
Publisher Packt
ISBN-13 9781800564480
Length 432 pages
Edition 2nd Edition
Languages
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Author (1):
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Stephen Klosterman Stephen Klosterman
Author Profile Icon Stephen Klosterman
Stephen Klosterman
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Table of Contents (9) Chapters Close

Preface
1. Data Exploration and Cleaning 2. Introduction to Scikit-Learn and Model Evaluation FREE CHAPTER 3. Details of Logistic Regression and Feature Exploration 4. The Bias-Variance Trade-Off 5. Decision Trees and Random Forests 6. Gradient Boosting, XGBoost, and SHAP Values 7. Test Set Analysis, Financial Insights, and Delivery to the Client Appendix

Introduction

In this chapter, we will introduce the remaining details of logistic regression left over from the previous chapter. In addition to being able to use scikit-learn to fit logistic regression models, you will gain insight into the gradient descent procedure, which is similar to the processes that are used "under the hood" (invisible to the user) to accomplish model fitting in scikit-learn. Finally, we'll complete our discussion of the logistic regression model by familiarizing ourselves with the formal statistical assumptions of this method.

We begin our exploration of the foundational machine learning concepts of overfitting, underfitting, and the bias-variance trade-off by examining how the logistic regression model can be extended to address the overfitting problem. After reviewing the mathematical details of the regularization methods that are used to alleviate overfitting, you will learn a useful practice for tuning the hyperparameters of regularization...

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