The K-Nearest Neighbors (K- NN ) algorithm is a popular Machine Learning algorithm used mostly for solving classification problems. In this article, you'll learn how the K- NN algorithm works with practical examples. We'll use diagrams, as well sample ... KNN Model Representation The model representation for KNN is the entire training dataset. It is as simple as that. KNN has no model other than storing the entire dataset, so there is no learning required. Efficient implementations can store the data using complex data structures like k-d trees to make look-up and matching of new patterns during prediction efficient. Because the entire training dataset is stored, you may want to think carefully about the consistency of your training data. It ... Learn about the k-NN algorithm, a non-parametric supervised learning method for classification and regression. Find out how it works, how to choose k, and how to overcome its drawbacks.
