Investopedia / Michela Buttignol Nonlinear regression is a form of regression analysis in which data is fit to a model and then expressed as a mathematical function. Simple linear regression ...

While I do spend lots of time pushing the idea of linear approximations on my students, we do need nonlinear functions to describe most interesting physical phenomena. The tradeoff for that is ...

Without a nonlinear function in the pipeline, a basic deep neural network would be one giant linear system that could be solved in one (large) go, but it would reveal only linear relationships.