| bfgs | Broyden-Fletcher-Goldfarb-Shanno (BFGS) Optimization |
| dfp | Davidon-Fletcher-Powell (DFP) Quasi-Newton Optimization |
| dogleg | Dogleg Trust-Region Optimization |
| double_dogleg | Double Dogleg Trust-Region Optimization |
| fast_grad | Fast Numerical Gradient |
| fast_hess | Fast Numerical Hessian |
| fast_jac | Fast Numerical Jacobian |
| gauss_newton | Gauss-Newton Optimization |
| is_pd_fast | Fast Positive Definiteness Check |
| l_bfgs_b | Limited-memory BFGS with Box Constraints (L-BFGS-B) |
| modified_newton | Modified Newton-Raphson Optimization |
| newton_raphson | Pure Newton-Raphson Optimization |