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Python Feature Engineering Cookbook

You're reading from   Python Feature Engineering Cookbook Over 70 recipes for creating, engineering, and transforming features to build machine learning models

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Product type Paperback
Published in Jan 2020
Publisher Packt
ISBN-13 9781789806311
Length 372 pages
Edition 1st Edition
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Author (1):
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Soledad Galli Soledad Galli
Author Profile Icon Soledad Galli
Soledad Galli
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Table of Contents (13) Chapters Close

Preface 1. Foreseeing Variable Problems When Building ML Models 2. Imputing Missing Data FREE CHAPTER 3. Encoding Categorical Variables 4. Transforming Numerical Variables 5. Performing Variable Discretization 6. Working with Outliers 7. Deriving Features from Dates and Time Variables 8. Performing Feature Scaling 9. Applying Mathematical Computations to Features 10. Creating Features with Transactional and Time Series Data 11. Extracting Features from Text Variables 12. Other Books You May Enjoy

Assembling an imputation pipeline with Feature-engine

Feature-engine is an open source Python library that allows us to easily implement different imputation techniques for different feature subsets. Often, our datasets contain a mix of numerical and categorical variables, with few or many missing values. Therefore, we normally perform different imputation techniques on different variables, depending on the nature of the variable and the machine learning algorithm we want to build. With Feature-engine, we can assemble multiple imputation techniques in a single step, and in this recipe, we will learn how to do this.

How to do it...

Let's begin by importing the necessary Python libraries and preparing the data:

  1. Let&apos...
You have been reading a chapter from
Python Feature Engineering Cookbook
Published in: Jan 2020
Publisher: Packt
ISBN-13: 9781789806311
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