Dynamic population size in multiobjective evolutionary algorithms

The authors propose a new evolutionary approach to multiobjective optimization problems; the Dynamic Multiobjective Evolutionary Algorithm (DMOEA). In DMOEA, a population growing and population decline strategies are designed, and several important indicators are defined in order to determine the adaptive individual "killing" scheme. By examining the selected performance indicators of a test function, DMOEA is found to be effective in directing the population into an optimal population size, keeping the diversity of the individuals along the trade-off surface, tending to extend the Pareto front to new areas, and finding a well-approximated Pareto optimal front.