www.gusucode.com > Weighted Differential Evolution Algorithm (WDE) > Weighted Differential Evolution Algorithm (WDE)/cc_wde/classic_benchmark_problems/sphere2.m
function ObjVal = sphere2(Chrom,switch1); % Dimension of objective function % Dim = 20; Dim=size(Chrom,2); % Compute population parameters [Nind,Nvar] = size(Chrom); % function 1, sum of xi^2 for i = 1:Dim (Dim=30) % n = Dim, -5.12 <= xi <= 5.12 % global minimum at (xi)=(0) ; fmin=0 ObjVal = sum((Chrom .* Chrom)')'; return