In this paper a class of optimization problems with uncertain linear constraints is discussed. It assumed that the constraint coefficients are random vectors whose probability distributions only partially known. Possibility theory used to model imprecise probabilities. one interpretation, possibility distribution (a membership function fuzzy set) in set coefficient realizations induces necessit...

In view of the shortcomings whale optimization algorithm (WOA), such as slow convergence speed, low accuracy, and easy to fall into local optimum, an improved (IWOA) is proposed. First, standard WOA from three aspects initial population, factor, mutation operation. At same time, Gaussian introduced. Then nonfixed penalty function method used transform constrained problem unconstrained problem. ...