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scikit-learn Cookbook , Second Edition

You're reading from   scikit-learn Cookbook , Second Edition Over 80 recipes for machine learning in Python with scikit-learn

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781787286382
Length 374 pages
Edition 2nd Edition
Languages
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Authors (2):
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Trent Hauck Trent Hauck
Author Profile Icon Trent Hauck
Trent Hauck
Julian Avila Julian Avila
Author Profile Icon Julian Avila
Julian Avila
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Toc

Table of Contents (13) Chapters Close

Preface 1. High-Performance Machine Learning – NumPy FREE CHAPTER 2. Pre-Model Workflow and Pre-Processing 3. Dimensionality Reduction 4. Linear Models with scikit-learn 5. Linear Models – Logistic Regression 6. Building Models with Distance Metrics 7. Cross-Validation and Post-Model Workflow 8. Support Vector Machines 9. Tree Algorithms and Ensembles 10. Text and Multiclass Classification with scikit-learn 11. Neural Networks 12. Create a Simple Estimator

Cross-validation with ShuffleSplit

The ShuffleSplit is one of the simplest cross-validation techniques. Using this cross-validation technique will simply take a sample of the data for the number of iterations specified.

Getting ready

The ShuffleSplit is a simple validation technique. We'll specify the total elements in the dataset, and it will take care of the rest. We'll walk through an example of estimating the mean of a univariate dataset. This is similar to resampling, but it'll illustrate why we want to use cross-validation while showing cross-validation.

How to do it...

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