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The Data Science Workshop

You're reading from   The Data Science Workshop A New, Interactive Approach to Learning Data Science

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Product type Paperback
Published in Jan 2020
Publisher
ISBN-13 9781838981266
Length 818 pages
Edition 1st Edition
Languages
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Authors (5):
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Thomas Joseph Thomas Joseph
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Thomas Joseph
Andrew Worsley Andrew Worsley
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Andrew Worsley
Robert Thas John Robert Thas John
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Robert Thas John
Anthony So Anthony So
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Anthony So
Dr. Samuel Asare Dr. Samuel Asare
Author Profile Icon Dr. Samuel Asare
Dr. Samuel Asare
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Toc

Table of Contents (18) Chapters Close

Preface 1. Introduction to Data Science in Python 2. Regression FREE CHAPTER 3. Binary Classification 4. Multiclass Classification with RandomForest 5. Performing Your First Cluster Analysis 6. How to Assess Performance 7. The Generalization of Machine Learning Models 8. Hyperparameter Tuning 9. Interpreting a Machine Learning Model 10. Analyzing a Dataset 11. Data Preparation 12. Feature Engineering 13. Imbalanced Datasets 14. Dimensionality Reduction 15. Ensemble Learning 16. Machine Learning Pipelines 17. Automated Feature Engineering

Summary

In this chapter, we learned about various techniques of ensemble learning. Let's summarize our learning in this chapter.

At the beginning of the chapter, we were introduced to the concepts of variance and bias and we learned that ensemble learning is a technique that aims to combine individual models to create a superior model, thereby reducing variance and bias and improving performance. To further explore different techniques of ensemble learning, we downloaded the credit card approval dataset. We also fitted a benchmark model using logistic regression.

In the subsequent sections, we were introduced to six different techniques of ensemble learning; three of them under simple techniques and the remaining three under advanced techniques. The averaging method creates an ensemble by combining the predictions of base learners and averaging the prediction probabilities. We were able to get better results than the benchmark model using this technique. The weighted averaging...

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