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Look out for the Elbow

Updated: Jul 18, 2019

We can use the Elbow method to determine the optimal number of cluster for k-Means Clustering, as well as, the optimal k value for k-Nearest Neighbour. Although both starts with "K", k-means clustering is not the same as k-Nearest Neighbour. The k-Nearest Neighbour or KNN algorithm is doing exactly as what it's name suggests, using k number of nearest neighbours to classify the sample point.

The sample code for KNN is as follows:

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