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arXiv 2201.06718cs.NE
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一种求解多峰多目标优化问题的简单进化算法

A Simple Evolutionary Algorithm for Multi-modal Multi-objective Optimization

Tapabrata Ray, Mohammad Mohiuddin Mamun, Hemant Kumar Singh

摘要:

在求解多模态多目标优化问题(MMOPs)时,目标不仅是在目标空间中找到Pareto最优前沿(PF)的良好表示,而且要在变量空间中找到所有等价的Pareto最优子集(PSS)。当决策者(DM)有兴趣确定具有相似性能的替代设计时,这些问题实际上是相关的。有显着的研究兴趣,近年来,开发有效的算法来处理MMOPs。然而,现有的算法仍然需要禁止数量的功能评估(往往在几千),以处理涉及低至两个目标和两个变量的问题。这些算法通常嵌入了复杂的定制机制,需要额外的参数来管理变量和目标空间的多样性和收敛性。在这封信中,我们介绍了一个稳态进化算法解决MMOPs,一个简单的设计,没有额外的用户定义的参数,需要调整相比,一个标准的EA。我们报告其性能的21 MMOPs从各种测试套件,被广泛用于基准测试使用低计算预算的1000功能评估。该算法的性能进行了比较,与六个国家的最先进的算法(MO环PSO SCD,DN-NSGAII,TriMOEA-TA&R,CPDEA,MMOEA/DC和MMEA-WI)。所提出的算法表现出显着更好的性能比上述算法的基础上建立的指标,包括IGDX,PSP和IGD。我们希望这项研究将鼓励设计简单,高效和通用的算法,以提高其实际应用的吸收。

英文摘要:

In solving multi-modal, multi-objective optimization problems (MMOPs), the objective is not only to find a good representation of the Pareto-optimal front (PF) in the objective space but also to find all equivalent Pareto-optimal subsets (PSS) in the variable space. Such problems are practically relevant when a decision maker (DM) is interested in identifying alternative designs with similar performance. There has been significant research interest in recent years to develop efficient algorithms to deal with MMOPs. However, the existing algorithms still require prohibitive number of function evaluations (often in several thousands) to deal with problems involving as low as two objectives and two variables. The algorithms are typically embedded with sophisticated, customized mechanisms that require additional parameters to manage the diversity and convergence in the variable and the objective spaces. In this letter, we introduce a steady-state evolutionary algorithm for solving MMOPs, with a simple design and no additional userdefined parameters that need tuning compared to a standard EA. We report its performance on 21 MMOPs from various test suites that are widely used for benchmarking using a low computational budget of 1000 function evaluations. The performance of the proposed algorithm is compared with six state-of-the-art algorithms (MO Ring PSO SCD, DN-NSGAII, TriMOEA-TA&R, CPDEA, MMOEA/DC and MMEA-WI). The proposed algorithm exhibits significantly better performance than the above algorithms based on the established metrics including IGDX, PSP and IGD. We hope this study would encourage design of simple, efficient and generalized algorithms to improve its uptake for practical applications.

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