More often than not, the analyst wants to find the pair of observations that is closest in terms of certain metrics, such as Euclidean distance. For example, on the popular SAS-L archive group, Randall Powers posted such a question at here, but he …
Tag: Nearest Neighbor
KNN Classification and Regression in SAS
kNN stands for k Nearest Neighbor. In data mining and predictive modeling, it refers to a memory-based (or instance-based) algorithm for classification and regression problems. It is a widely used algorithm with many successfully applications in medi…
K-Nearest Neighbor in SAS
K-Nearest-Neighbor, aka KNN, is a widely used data mining tool and is often called memory-based/case-based/instance-based method as no model is fit. A good introduction to KNN can be find at [1], or @ Wiki.
Typically, KNN algorithm relies on a soph…