PRIMA is a package for solving general nonlinear optimization problems without using derivatives. It provides the reference implementation for Powell's derivative-free optimization methods, i.e., COBYLA, UOBYQA, NEWUOA, BOBYQA, and LINCOA. PRIMA means Reference Implementation for Powell's methods with Modernization and Amelioration, P for Powell.

Powell's Derivative-Free Optimization solvers.

Recommended reading material pertaining to MUPE and other multiplicative error regression techniques

Efficient sampling of high dimensional spaces with complex, non-linear constraints

PRIMA: Reference Implementation for Powell's methods with Modernization and Amelioration