K-nearest neighbors, while perhaps the simplest possible machine learning algorithm, is extremely useful for a variety of tasks. In this video, I explain how it works and demonstrate its performance on handwriting recognition.
See the handwriting demo here: http://macheads101.com/demos/handwrit...
Source of handwriting demo: https://github.com/unixpickle/mnistdemo
MNIST handwriting dataset: http://yann.lecun.com/exdb/mnist/
Code to generate graphics: https://gist.github.com/unixpickle/9f...
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