这是一个快速的拟牛顿法程序，非常实用，非常强大-FMINLBFGS is a Memory efficient optimizer for problems such as image registration with large amounts of unknowns, and cpu-expensive gradients.



Supported:

- Quasi Newton Broyden–Fletcher–Goldfarb–Shanno (BFGS).

- Limited memory BFGS (L-BFGS).

- Steepest Gradient Descent optimization.