A rank-niche evolution strategy (RNES) algorithm has been developed in this paper to solve
unconstrained multiobjective optimization problems. A required number of Pareto-optimal
solutions can be generated by the algorithm in a single run. In addition to the operations of
recombination, mutation and selection used in original evolution strategy (ES), an external
elite set which contains a given number of non-dominated elites is updated and trimmed by
a clustering technique to maintain a uniformly distributed Pareto front. The fitness function for …