Journal of Northeastern University(Natural Science) ›› 2025, Vol. 46 ›› Issue (9): 17-24.DOI: 10.12068/j.issn.1005-3026.2025.20249030

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Learning-Based NSGA-Ⅱ for Multi-objective Portfolio Optimization Problems

Zhu ZHU1(), Hang-yu LOU2   

  1. 1.School of Information,Liaoning University,Shenyang 110036,China
    2.School of Information Science & Engineering,Northeastern University,Shenyang 110819,China.
  • Received:2024-05-26 Online:2025-09-15 Published:2025-12-03
  • Contact: Zhu ZHU

Abstract:

To address the issues of insufficient diversity and poor constraint-handling capability in the non-dominated sorting genetic algorithm Ⅱ (NSGA-Ⅱ) when solving portfolio optimization problems, a learning-based improved NSGA-Ⅱ algorithm (INSGA-Ⅱ) incorporating clustering and an adaptive feasibility repair strategy for multi-objective portfolio optimization was proposed. In the proposed algorithm, clustering learning was employed to enhance population diversity, while adaptive repair ensured that newly generated solutions were feasible, thereby improving the algorithm's diversity and convergence speed. Additionally, the populations after crossover and mutation were preserved separately and merged with the parent population to increase the selection pressure and quality of offspring generation. Experimental results demonstrate that the proposed algorithm exhibits superior search performance and stability, effectively solving multi-objective portfolio optimization problems.

Key words: multi-objective optimization, NSGA-Ⅱ, portfolio optimization problem, clustering learning, adaptive repair

CLC Number: