1Introducing Partial Least Squares
Modeling in General
Applied statistics can be thought of as a body of knowledge, or even a technology, that supports learning about the real world in the face of uncertainty. The theme of learning is ubiquitous in more or less every context that can be imagined, and along with this comes the idea of a (statistical) model that tries to codify or encapsulate our current understanding.
Many statistical models can be thought of as relating one or more inputs (which we call collectively X) to one or more outputs (collectively ...