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K-nn Clustering Explained in One Picture

This is a simple overview of the k-NN process. Perhaps the most challenging step is finding a k that's "just right". The square root of n can put you in the ballpark, but ideally you should use a training set (i.e. a nicely categorized set) to find a "k" that works for your data. Remove a few categorized data points and make them "unknowns", testing a few values for k to see what works.

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Comment by Lance Norskog on March 25, 2019 at 8:46am

Thank you!

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