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Machine Learning Fundamentals: The Confusion Matrix

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. For a complete index of all the StatQuest videos, check out: https://statquest.org/video-index/ If you're not already familiar with cross validation, check out the Quest:    • Machine Learning Fundamentals: Cross ...   If you'd like to support StatQuest, please consider... Buying The StatQuest Illustrated Guide to Machine Learning!!! PDF - https://statquest.gumroad.com/l/wvtmc Paperback - https://www.amazon.com/dp/B09ZCKR4H6 Kindle eBook - https://www.amazon.com/dp/B09ZG79HXC Patreon:   / statquest   ...or... YouTube Membership:    / @statquest   ...a cool StatQuest t-shirt or sweatshirt: https://shop.spreadshirt.com/statques... ...buying one or two of my songs (or go large and get a whole album!) https://joshuastarmer.bandcamp.com/ ...or just donating to StatQuest! https://www.paypal.me/statquest Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter:   / joshuastarmer   Lastly, a big thanks goes to Cesar Diniz for the Portuguese subtitles. 0:00 Awesome song and introduction 0:24 Motivation for confusion matrices 1:38 Definition of confusion matrix and related terminology 2:44 Confusion matrix example 3:41 Comparing confusion matrices 4:47 A 3x3 confusion matrix. 6:20 Large confusion matrices 6:38 Summary of concepts and main ideas #statquest #confusionmatrix #ML