Add Yellowbrick

[davidgilbertson]

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What is this Python project?

A collection of useful charts to help when doing ML model selection and hyperparameter fiddling.

What's the difference between this Python project and similar ones?

This is the only data-vis package I've seen specifically aimed at assisting model selection.

The docs are thorough and they've put some effort into having a concise API.

FWIW, it extends Matplotlib and is listed on Matplotlib's own list of helpful third party packages.

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