Classification Methods – Ep. 3: K-Nearest neighbor (The Lazy Learner)
In k-NN classification, one uses the other available observations that are most similar (based on the predictors at hand) to the observation we are trying to predict (classify into a group). In this seminar you are going to be introduced to the KNN algorithm and how to choose K. You will also be introduced to model evaluation and other considerations. The KNN method will be explored using examples in the R statistical software package.