arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.05435cs.NE
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一种基于双存档的多指标多目标优化算法

An Efficient Multi-Indicator and Many-Objective Optimization Algorithm based on Two-Archive

Ziming Wang, Xin Yao

摘要:

由于传统的基于支配和分解的多目标优化算法难以解决多目标优化问题,基于指标的算法正在变得越来越重要。然而,以往的基于指标的多目标优化算法存在以下缺陷:1)环境选择过程耗时长; 2)通常需要附加参数。为此,提出了一种基于双档案的多指标多目标优化算法(SRA 3),该算法能够在环境选择中根据指标性能有效地选择优良个体,并采用自适应参数策略进行亲本选择,无需设置额外的参数。然后对算法进行归一化处理,并比较归一化前后的性能,发现归一化处理显著提高了算法的性能。我们还分析了归一化如何影响基于指标的算法,并观察到归一化的$I_{ε+}$指标更好地找到极端的解决方案,并可以减少由于其范围不同而导致的每个目标对指标的贡献程度不同的影响。然而,它也有极端解决方案的偏好,这导致解决方案集收敛到极端。最后,我们给出了一些规范化的建议。然后,在DTLZ和WFG问题上,我们对39个目标分别为5、10和15个的问题进行了实验,结果表明SRA 3在保持高效率的同时具有良好的收敛性和多样性。最后,我们进行了实验DTLZ和WFG问题与20和25个目标,发现本文提出的算法是更有竞争力的比其他算法的目标数量的增加。

英文摘要:

Indicator-based algorithms are gaining prominence as traditional multi-objective optimization algorithms based on domination and decomposition struggle to solve many-objective optimization problems. However, previous indicator-based multi-objective optimization algorithms suffer from the following flaws: 1) The environment selection process takes a long time; 2) Additional parameters are usually necessary. As a result, this paper proposed an multi-indicator and multi-objective optimization algorithm based on two-archive (SRA3) that can efficiently select good individuals in environment selection based on indicators performance and uses an adaptive parameter strategy for parental selection without setting additional parameters. Then we normalized the algorithm and compared its performance before and after normalization, finding that normalization improved the algorithm's performance significantly. We also analyzed how normalizing affected the indicator-based algorithm and observed that the normalized $I_{ε+}$ indicator is better at finding extreme solutions and can reduce the influence of each objective's different extent of contribution to the indicator due to its different scope. However, it also has a preference for extreme solutions, which causes the solution set to converge to the extremes. As a result, we give some suggestions for normalization. Then, on the DTLZ and WFG problems, we conducted experiments on 39 problems with 5, 10, and 15 objectives, and the results show that SRA3 has good convergence and diversity while maintaining high efficiency. Finally, we conducted experiments on the DTLZ and WFG problems with 20 and 25 objectives and found that the algorithm proposed in this paper is more competitive than other algorithms as the number of objectives increases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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