Conjugate gradient Classical conjugate gradient 1 Conjugate gradient method 1 Conjugate-gradient method 1 Exact line search 1 Finding solutions 1 Global conver-gence 1 Hybrid conjugate gradient 1 Nonlinear conjugate gradient algorithms 1 Nonlinear programming 1 Numerical methods 1 Portfolio selection 1 Portfolio selection problems 1 Strong wolfe line search 1 Unconstrained optimization 1 Wolfe line searches 1 global convergence 1 portfolio selection 1 strong Wolfe line search 1