I study the noise source identification.
recently， l meet the problem that l defined d as a nonnegative vector ，but the solution was always nonpositive.just like this:
variable d(N) nonnegative ;
B - diag(d,0)== hermitian_semidefinite(N);
the B is an hermitian_semidefinite matrix.My goal is to make sum(d） positive and maximum,with constrain B is maintaining the positive semidefinite.
Think you in advance!