One of the fundamental concepts in machine learning is the Confusion Matrix. Combined with Cross Validation, it’s how we decide which machine learning method would be best for our dataset. Check out the video to find out how!

NOTE: This video illustrates the confusion matrix concept as described in the Introduction to Statistical Learning, page 145.

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If you’re not already familiar with cross validation, check out the Quest: https://youtu.be/fSytzGwwBVw

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Lastly, a big thanks goes to Cesar Diniz for the Portuguese subtitles.