The utility MatInverse() function uses Crout's decomposition algorithm ... Each categorical value can be one-hot encoded, for example red = (1, 0, 0), blue = (0, 1, 0) and green = (0, 0, 1). In ...

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 ...