arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.09736cs.NEmath.OC
收藏

三维线/面Pareto前沿上的超体积最优$μ$ -分布

Hypervolume-Optimal $μ$-Distributions on Line/Plane-based Pareto Fronts in Three Dimensions

Ke Shang, Hisao Ishibuchi, Weiyu Chen, Yang Nan, Weiduo Liao

摘要:

超体积算法在进化多目标优化领域中被广泛用于评价解集的质量。对于在Pareto前沿上具有$μ$解的解集,较大的超体积意味着较好的解集。研究具有最大超体积的解集的分布是EMO中的一个重要课题,即所谓的超体积最优$μ$ -分布。理论结果表明,$μ$解在二维线性Pareto前沿上是均匀分布的。然而,$μ$的解决方案并不总是均匀分布在一个单线Pareto前沿的三维。只有当单线帕累托前沿有一个恒定的目标时,它们才是一致的。在本文中,我们进一步研究了三维超体积最优$μ$ -分布。我们考虑基于线和平面的帕累托前沿。对于基于线的Pareto前沿,我们将单线Pareto前沿扩展到双线和三线Pareto前沿,其中每条线都有一个恒定的目标。对于基于平面的Pareto前沿,考虑了线性三角形和倒三角形Pareto前沿。首先,我们证明了$μ$的解决方案并不总是均匀分布的线为基础的帕累托前沿。均匀性取决于线条是如何组合的。然后,我们表明,一个统一的解决方案集上的平面为基础的帕累托前沿并不总是最优的超体积最大化。它相对于$(μ+1)$选择方案是局部最优的。我们的研究结果可以帮助社区中的研究人员更好地理解和利用超容积指标。

英文摘要:

Hypervolume is widely used in the evolutionary multi-objective optimization (EMO) field to evaluate the quality of a solution set. For a solution set with $μ$ solutions on a Pareto front, a larger hypervolume means a better solution set. Investigating the distribution of the solution set with the largest hypervolume is an important topic in EMO, which is the so-called hypervolume optimal $μ$-distribution. Theoretical results have shown that the $μ$ solutions are uniformly distributed on a linear Pareto front in two dimensions. However, the $μ$ solutions are not always uniformly distributed on a single-line Pareto front in three dimensions. They are only uniform when the single-line Pareto front has one constant objective. In this paper, we further investigate the hypervolume optimal $μ$-distribution in three dimensions. We consider the line- and plane-based Pareto fronts. For the line-based Pareto fronts, we extend the single-line Pareto front to two-line and three-line Pareto fronts, where each line has one constant objective. For the plane-based Pareto fronts, the linear triangular and inverted triangular Pareto fronts are considered. First, we show that the $μ$ solutions are not always uniformly distributed on the line-based Pareto fronts. The uniformity depends on how the lines are combined. Then, we show that a uniform solution set on the plane-based Pareto front is not always optimal for hypervolume maximization. It is locally optimal with respect to a $(μ+1)$ selection scheme. Our results can help researchers in the community to better understand and utilize the hypervolume indicator.

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。

↑