共查询到18条相似文献,搜索用时 140 毫秒
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针对人工蜂群算法在求解函数优化问题时存在的探索能力强,而开发能力不足和收敛性能差的问题,本文提出一种基于分段搜索策略的自适应差分进化人工蜂群算法。该算法将改进后的差分进化算法中的变异操作引入到观察蜂的局部搜索策略中,让观察蜂在雇佣蜂逐维变异后的当前最优解周围进行局部搜索,并采用分段搜索的方式更新蜜源,以提高其局部搜索能力。仿真实验结果表明,与基本人工蜂群算法相比,改进后的算法有效地平衡了算法的探索能力和开发能力,并提高了算法的寻优精度和收敛速度。 相似文献
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人工蜂群算法(ABC)具有良好的全局探索能力,但局部利用能力较弱。与此相反,差分进化(DE)具有良好的局部利用能力,但全局探索能力较弱。鉴于此,提出了ABC和DE结合算法——AMDABC。AMDABC遵循人工蜂群算法的框架,包括雇佣蜂阶段、跟随蜂阶段和侦查蜂阶段。在雇用蜂阶段引入了两个DE算子(JADE算子、CoDE算子),同时给出两个控制参数,根据控制参数的值自适应地交替执行CoDE算子、JADE算子或ABC搜索方程,以达到全局探索能力和局部利用能力的平衡。在跟随蜂阶段,同样结合JADE差分算子产生候选解,以更好地解决ABC算法局部利用能力弱的问题。在19个标准函数上的实验结果表明,AMDABC算法性能优于典型ABC算法、典型DE算法、典型ABC和DE结合算法。 相似文献
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标准人工蜂群算法由于局部搜索能力差,收敛精度低,容易陷入早熟收敛等缺陷,从而求解最小值函数优化问题的能力受到限制。为了解决标准人工蜂群算法的以上问题,提出了一种改进的人工蜂群算法。该算法将混沌算子引入雇佣蜂和跟随蜂基于当前最优解的局部搜索策略中,并赋予跟随蜂细菌的趋药性,从而
提高了人工蜂群算法的局部搜索能力。在6个测试函数上的仿真结果表明,该算法能有效地避免陷入局部最优,并使收敛精度得到显著提高。 相似文献
提高了人工蜂群算法的局部搜索能力。在6个测试函数上的仿真结果表明,该算法能有效地避免陷入局部最优,并使收敛精度得到显著提高。 相似文献
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针对人工蜂群算法存在易陷入局部最优、收敛速度慢的缺陷,提出一种改进邻域搜索策略的人工蜂群算法.首先,将混沌思想和反向学习方法引入初始种群,设计混沌反向解初始化策略,以增大种群多样性,增强跳出局部最优的能力;然后,在跟随蜂阶段根据更新前个体最优位置引入量子行为模拟人工蜂群获取最优解,通过交叉率设计更新前个体最优位置,并利用势阱模型的控制参数提高平衡探索与开发的能力,对观察蜂邻域搜索策略进行改进,以提高算法的收敛速度和精度;最后,将改进人工蜂群算法与粒子群算法、蚁群算法以及其他改进人工蜂群算法进行比较,利用12个标准测试函数进行仿真分析.结果表明,改进算法不仅提高了收敛速度和精度,而且在高维函数优化方面具有一定的优势. 相似文献
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在波浪发电装置最大功率点跟踪中,浮子受到水动力的非线性导致传统群智能算法收敛速度不佳,易陷入局部最优。为此提出纵横交叉优化的人工蜂群算法(CABC)控制方案。引入纵横交叉算法(CSO)横向交叉算子的个体间变量全交叉思想,优化引导蜂、采蜜蜂搜索方式,增强CABC算法局部搜索能力。引入CSO纵向交叉算子优化侦查蜂,使侦查蜂能利用已知蜜源信息探索未知可行解域,提升CABC算法全局搜索能力。优化蜜源选择概率和人工蜂群结构,进一步改善CABC算法性能。仿真表明,CABC算法全局寻优能力强,收敛速度快,适用于波浪发电装置最大功率点跟踪。 相似文献
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针对人工蜂群算法中存在的收敛速度慢、寻优精度低的问题,提出了一种改进的人工蜂群算法。该算法将自适应趋向性加入雇佣蜂的搜索方案中,同时在观察蜂的搜索方案中加入引导因子。通过雇佣蜂对优秀蜜源的动态趋向搜索以及观察蜂在引导因子引领下的协同搜索,显著提高了算法的局部搜索能力。基于八个标准测试函数的仿真结果表明,与基本人工蜂群算法相比,改进后的算法在寻优精度和收敛速度方面均有明显提升。 相似文献
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Kür?at Ayan 《Applied Soft Computing》2012,12(5):1477-1482
Artificial bee colony (ABC) algorithm is an optimization algorithm based on the intelligent foraging behavior of honeybee swarm. Optimal reactive power flow (ORPF) based on ABC algorithm to minimize active power loss in power systems is studied in this paper. The advantage of ABC algorithm is that it does not require these parameters, because it is very difficult to determine external parameters such as cross over rate and mutation rate as in case of genetic algorithm and differential evolution. The other advantage is that global search ability of the algorithm is implemented by introducing a neighborhood source production mechanism which is similar to mutation process. Because of these features, ABC algorithm attracts much attention in recent years and has been used successfully in many areas. ORPF problem is one of these areas. In this paper, proposed algorithm is tested on both standard IEEE 30-bus test system and IEEE 118-bus test system. To show the effectiveness of proposed algorithms, the obtained results are compared with different approaches as available in the literature. 相似文献
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针对人工蜂群算法初始化群体分布不均匀和局部搜索能力弱的问题,本文提出了一种增强局部搜索能力的人工蜂群算法(ESABC)。首先,在种群初始化阶段采用高维洛伦兹混沌系统,得到遍历性好、有规律的初始群体,避免了随机初始化的盲目性。然后,采用基于对数函数的适应度评价方式,以增大种群个体间差异,减小选择压力,避免过早收敛。最后,在微分进化算法的启发下,提出了一种新的搜索策略,采用当前种群中的最佳个体来引导下一代的更新,以提高算法的局部搜索能力。通过对12个经典测试函数的仿真实验,并与其他经典的改进人工蜂群算法对比,结果表明:本文算法具有良好的寻优性能,无论在解的精度还是收敛速度方面效果都有所提高。 相似文献
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针对K-均值算法对初始值敏感和易陷入局部最优的缺点,提出了一种基于改进差分进化的K-均值聚类算法。该算法通过引入基于Laplace分布的变异算子和Logistic变尺度混沌搜索来增强全局寻优能力。实验结果表明,该算法能够较好地克服传统K-均值算法的缺点,具有较好的搜索能力,且算法的收敛速度较快,鲁棒性较强。 相似文献
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A modified artificial bee colony algorithm 总被引:5,自引:0,他引:5
Artificial bee colony algorithm (ABC) is a relatively new optimization technique which has been shown to be competitive to other population-based algorithms. However, there is still an insufficiency in ABC regarding its solution search equation, which is good at exploration but poor at exploitation. Inspired by differential evolution (DE), we propose an improved solution search equation, which is based on that the bee searches only around the best solution of the previous iteration to improve the exploitation. Then, in order to make full use of and balance the exploration of the solution search equation of ABC and the exploitation of the proposed solution search equation, we introduce a selective probability P and get the new search mechanism. In addition, to enhance the global convergence, when producing the initial population, both chaotic systems and opposition-based learning methods are employed. The new search mechanism together with the proposed initialization makes up the modified ABC (MABC for short), which excludes the probabilistic selection scheme and scout bee phase. Experiments are conducted on a set of 28 benchmark functions. The results demonstrate good performance of MABC in solving complex numerical optimization problems when compared with two ABC-based algorithms. 相似文献
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Artificial bee colony (ABC) algorithm is a very popular population-based algorithm. Unfortunately, there exists a shortcoming of slow convergence rate, which partly results from random choices of neighbor individuals regarding its solution search equation. A novel scheme for the choice of neighbors is introduced based on grey relational degrees between a current individual and its neighbors to overcome the insufficiency. Then, the chosen neighbor is used to guide the search process. Additionally, inspired by differential evolution, a solution search equation called ABC/rand/2 is employed to balance the previous exploitation and a new perturbation scheme is also employed. What is more, solution search equations using information of the best individual, an opposition-based learning method and a chaotic initialization technique are also integrated into the proposed algorithm called grey artificial bee colony algorithm (GABC for short). Subsequently, the effectiveness and efficiency of GABC are validated on a test suite composed of fifty-seven benchmark functions. Furthermore, it is also compared with a few state-of-the-art algorithms. The related experimental results show the effectiveness and superiority of GABC. 相似文献