L8a:

Simple linear (i.e., y = b_{0} + b_{1} x) (search also class L8h)

(4 routines)

L8b:

Polynomial (e.g., y = b_{0} + b_{1} x + b_{2} x^{2}) (search also class L8c)

(1 routine)

L8c:

Multiple linear (i.e., y = b_{0} + b_{1} x_{1} + … + b_{p} x_{p})

(33 routines)

L8d:

Polynomial in several variables 
(0 routines)

L8e:

Nonlinear (i.e., y = F(X,b)) (search also class L8h)

(13 routines)

L8f:

Simultaneous (i.e., Y = Xb)

(0 routines)

L8g:

Spline (i.e., piecewise polynomial) 
(4 routines)

L8h:

EDA (e.g., smoothing) 
(1 routine)

L8i:

Service routines (e.g., matrix manipulation for variable selection) 
(4 routines)
