Hybrid Methods
Different hybrid methods exist, but here we consider hybridizing MCDM and EMO. A hybrid algorithm in the context of multiobjective optimization is a combination of algorithms/approaches from these two fields (see e.g.,). Hybrid algorithms of EMO and MCDM are mainly used to overcome shorcomings by utilizing strengths. Several types of hybrid algorithms have been proposed in the literature, e.g., incorporating MCDM approaches into EMO algorithms as a local search operator and to lead a DM to the most preferred solution(s) etc. A local search operator is mainly used to enhance the rate of convergence of EMO algorithms.
The roots for hybrid multiobjective optimization can be traced to the first Dagstuhl seminar organized in November 2004 (see, here). Here some of the best minds in EMO (Professor Kalyanmoy Deb, Professor Jürgen Branke etc.) and MCDM (Professor Kaisa Miettinen, Professor Ralph E. Steuer etc.) realized the potential in combining ideas and approaches of MCDM and EMO fields to prepare hybrids of them. Subsequently many more Dagstuhl seminars have been arranged to foster collaboration. Recently, hybrid multiobjective optimization has become an important theme in several international conferences in the area of EMO and MCDM (see e.g., and.
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