School of Mathematics and Computer Science, Shaanxi University of Technology, Hanzhong 723001, China
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文章历史+
Received
Published
Revised
2025-02-17
2026-04-08
2025-12-24
Online Date
2026-05-28
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摘要
为了应对传统美洲狮(puma optimizer,Puma)算法存在的初始位置不均匀、搜索精度不高等问题,提出了一种混合多策略的美洲狮算法(tent multi strategy puma optimizer, TPuma)。采用Tent混沌映射代替传统伪随机数生成初始种群,从而提升种群的多样性。在原有的位置更新公式基础上,引入新的更新机制,使个体在迭代过程中有效跳出局部最优解。并在原算法中融合Levy飞行机制,平衡原算法在探索和开发阶段的选择概率,使算法迅速找到最优值。采用Wilcoxon检验测试Puma与TPuma之间有无显著差异,再用马尔科夫链稳态分布柱状图直观地观察不同状态的概率分布情况。使用基准测试函数和两个经典工程设计问题进行仿真实验,并与其他流行算法进行比较。仿真结果显示,加入Tent混沌映射和Levy飞行机制后,算法表现出优越的收敛速度和更高的寻优精度。
Abstract
To address the issues of uneven initial positions and low search accuracy in the traditional Puma (puma optimizer), TPuma (Tent multi-strategy puma optimizer) was proposed. The Tent chaotic mapping was adopted to replace the traditional pseudo-random number generation for the initial population, thereby enhancing the diversity of the population. On the basis of the original position update formula, a new update mechanism was introduced to enable individuals to effectively escape from local optima during the iterative process. Additionally, the Levy flight mechanism was integrated into the original algorithm to balance the selection probabilities in the exploration and exploitation phases, allowing the algorithm to quickly find the optimal value. The Wilcoxon test was used to determine whether there are significant differences between Puma and TPuma, and the steady-state distribution histogram of the Markov chain was used to visually observe the probability distribution of different states. Benchmark test functions and two classic engineering design problems were used for simulation experiments and compared with other popular algorithms. The simulation results show that after adding the Tent chaotic mapping and the Levy flight mechanism, the algorithm exhibits superior convergence speed and higher optimization accuracy.
上述算法在解决优化问题时表现出了一定的优势。它能够快速而有效地搜索解空间,具有一定的全局搜索能力,并且在处理复杂的多维优化问题时表现出了良好的鲁棒性。然而,这些方法在平衡全局搜索与局部搜索方面存在不足,缺乏有效的局部最优解逃脱策略,并且难以保持种群的多样性。这导致在实际应用中出现收敛速度慢、搜索精度低以及易陷入局部最优等问题[21]。因此,基于美洲狮算法,现提出一种加入Tent混沌映射以及Levy飞行的新型美洲狮优化算法(tent multi strategy puma optimizer,TPuma),引入Tent混沌映射生成美洲狮算法的初始种群,使用Levy飞行改变其系数带来的局限性,以期解决传统美洲狮算法在探索与开发选择不均的问题,提高算法的多样性。
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