Maximum Dispersion, Maximum Concentration: Enhancing the Quality of MOP Solutions
This addresses bias in multi-objective optimization for decision-makers, but appears incremental as it builds on existing concepts of dispersion and concentration.
The study tackled the problem of improving solution quality in multi-objective optimization by optimizing dispersion in the decision space and convergence in a specific region of the objective space, with preliminary experiments suggesting it enhances optimization by balancing these factors.
Multi-objective optimization problems (MOPs) often require a trade-off between conflicting objectives, maximizing diversity and convergence in the objective space. This study presents an approach to improve the quality of MOP solutions by optimizing the dispersion in the decision space and the convergence in a specific region of the objective space. Our approach defines a Region of Interest (ROI) based on a cone representing the decision maker's preferences in the objective space, while enhancing the dispersion of solutions in the decision space using a uniformity measure. Combining solution concentration in the objective space with dispersion in the decision space intensifies the search for Pareto-optimal solutions while increasing solution diversity. When combined, these characteristics improve the quality of solutions and avoid the bias caused by clustering solutions in a specific region of the decision space. Preliminary experiments suggest that this method enhances multi-objective optimization by generating solutions that effectively balance dispersion and concentration, thereby mitigating bias in the decision space.