Channel: StatQuest with Josh Starmer

Category: Education

Tags: josh starmerdata sciencemachine learningstatqueststatistics

Description: NOTE: You can support StatQuest by purchasing the Jupyter Notebook and Python code seen in this video here: statquest.gumroad.com/l/tzxoh This webinar was recorded 20200528 at 11:00am (New York time). NOTE: This StatQuest assumes are already familiar with: Decision Trees: youtu.be/7VeUPuFGJHk Cross Validation: youtu.be/fSytzGwwBVw Confusion Matrices: youtu.be/Kdsp6soqA7o Cost Complexity Pruning: youtu.be/D0efHEJsfHo Bias and Variance and Overfitting: youtu.be/EuBBz3bI-aA For a complete index of all the StatQuest videos, check out: statquest.org/video-index If you'd like to support StatQuest, please consider... Buying my book, The StatQuest Illustrated Guide to Machine Learning: PDF - statquest.gumroad.com/l/wvtmc Paperback - amazon.com/dp/B09ZCKR4H6 Kindle eBook - amazon.com/dp/B09ZG79HXC Patreon: patreon.com/statquest ...or... YouTube Membership: youtube.com/channel/UCtYLUTtgS3k1Fg4y5tAhLbw/join ...a cool StatQuest t-shirt or sweatshirt: shop.spreadshirt.com/statquest-with-josh-starmer ...buying one or two of my songs (or go large and get a whole album!) joshuastarmer.bandcamp.com ...or just donating to StatQuest! paypal.me/statquest Lastly, if you want to keep up with me as I research and create new StatQuests, follow me on twitter: twitter.com/joshuastarmer 0:00 Awesome song and introduction 5:23 Import Modules 7:40 Import Data 11:18 Missing Data Part 1: Identifying 15:57 Missing Data Part 2: Dealing with it 21:16 Format Data Part 1: X and y 23:33 Format Data Part 2: One-Hot Encoding 37:29 Build Preliminary Tree 46:31 Pruning Part 1: Visualize Alpha 51:22 Pruning Part 2: Cross Validation 56:46 Build and Draw Final Tree #StatQuest #ML #ClassificationTrees