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Multiobjective OptimizationMaximize (y1, y2, …, yk) = ƒ(x1, x2, …, xn)y2y2Pareto optimal = not dominatedbetterincomparabledominatedworseincomparabley1y1Pareto set = set of all Pareto-optimal solutions9-7SummarySingle objective optimization methods• decision is performed during optimization• Examples: integer programming, simulated annealingMultiple objective optimization methods• decision is done after optimization• Example: Evolutionary algorithms• Refer to publications of Thiele or Schwefel et al. for moreinformationConcept of Pareto points• eliminates large set of non-relevant design points• allows separating optimization and decision9-84