Start the optimization with start.

The following parameters can be chosen.

mmin = 2000; % minimal number of finite elements in space discretization n = 500; % number of time instances r = 3; % rank of POD basis r_deim= 10; % number of interpolation points for DEIM opt_mode=1; % 0: Optimization with steepest descent % 1: Optimization with non-linear CG % 2: Optimization with BFGS % 3: Optimization with semi-smooth Newton

mode = 2; % 0: Computation by FE method and by POD method % 1: Computation by FE method % 2: Computation by POD method

pod_mode=0; % 0: Computation by POD and POD-DEIM % 1: Computations by POD % 2: Computations by POD-DEIM

errormode = 0; % 0: no computation of analytical a-posteriori-estimate % 1: computation of analytical a-posteriori-estimate % (very complex)

linesearch_mode=1; % 1: new search direction via bisection % 2: new search direction via armijo % 3: new search direction via Wolfe-Powell % 4: new search direction via strict Wolfe-Powell

cg_mode=4; % 1: Update with Hestenes-Stiefel % 2: Update with Flecher-Reeves % 3: Update with Polak-Riebere % 4: Update with Hager Zhang