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arXiv 2404.06014cs.NEcs.AI
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使用三目标进化算法求解动态机会约束背包问题

Using 3-Objective Evolutionary Algorithms for the Dynamic Chance Constrained Knapsack Problem

The University of Adelaide(阿德莱德大学);School of Computer and Mathematical Sciences(计算机与数学科学学院)

Ishara Hewa Pathiranage, Frank Neumann, Denis Antipov, Aneta Neumann

AI总结:

针对随机权重与动态容量并存的机会约束背包问题,提出独立于置信水平的三目标形式化,并用GSEMO和MOEA/D验证其优于二目标方法。

摘要:

现实世界的优化问题通常包含随机性和动态性成分。进化算法在这些场景中尤其有效,因为它们能够轻松适应不确定且不断变化的环境,但不确定性和动态变化往往是被孤立研究的。本文探索将三目标进化算法用于具有动态约束的机会约束背包问题。在我们的设定中,物品的权重是随机的,背包容量会随时间变化。我们提出一种三目标形式化,能够同时处理随机成分和动态成分,并且独立于约束所要求的置信水平。随后,将这种新方法与仅限于单一置信水平的二目标形式化进行比较。我们使用两种不同的多目标进化算法(MOEA)评估该方法,分别是全局简单进化多目标优化器(GSEMO)和基于分解的多目标进化算法(MOEA/D),并覆盖多种基准场景。分析表明,在解决动态机会约束背包问题时,三目标形式化相比二目标形式化具有优势。

英文摘要:

Real-world optimization problems often involve stochastic and dynamic components. Evolutionary algorithms are particularly effective in these scenarios, as they can easily adapt to uncertain and changing environments but often uncertainty and dynamic changes are studied in isolation. In this paper, we explore the use of 3-objective evolutionary algorithms for the chance constrained knapsack problem with dynamic constraints. In our setting, the weights of the items are stochastic and the knapsack's capacity changes over time. We introduce a 3-objective formulation that is able to deal with the stochastic and dynamic components at the same time and is independent of the confidence level required for the constraint. This new approach is then compared to the 2-objective formulation which is limited to a single confidence level. We evaluate the approach using two different multi-objective evolutionary algorithms (MOEAs), namely the global simple evolutionary multi-objective optimizer (GSEMO) and the multi-objective evolutionary algorithm based on decomposition (MOEA/D), across various benchmark scenarios. Our analysis highlights the advantages of the 3-objective formulation over the 2-objective formulation in addressing the dynamic chance constrained knapsack problem.

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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