www.gusucode.com > Weighted Differential Evolution Algorithm (WDE) > Weighted Differential Evolution Algorithm (WDE)/cc_wde/classic_benchmark_problems/dropwave.m
function f = dropwave(X,str) f=[]; for i=1:size(X,1) x=X(i,:); f(i) = -(1 + cos(12*norm(x(1:2))))/(0.5*x(1:2)*x(1:2)'+2) ; end f=f'; end