Transforming a dataset into one with fewer columns is more complicated than it might seem, explains Dr. James McCaffrey of Microsoft Research in this full-code, step-by-step machine learning tutorial.

The Annals of Statistics, Vol. 37, No. 6B (December 2009), pp. 4279-4312 (34 pages) We investigate a method for extracting nonlinear principal components (NPCs). These NPCs maximize variation subject ...

Care should be taken when interpreting the results of a principal components analysis. As an aid to interpretation and as a guide to reliability, a range of diagnostic tools have been proposed. This ...

A research team has conducted an extensive study to explore the key factors affecting coffee production in the Gedeo Zone of ...