Artificial bee colony algorithm with gene recombination for numerical function optimization

Artificial bee colony (ABC) algorithm is a stochastic and population-based optimization method, which mimics the collaborative foraging behaviour of honey bees and has shown great potential to handle various kinds of optimization problems. However, ABC often suffers from slow convergence speed since its internal mechanism and solution search equation do well in exploration, but badly in exploitation. In order to solve this knotty issue, inspired by the natural phenomenon that the good individuals (solutions) always contain good genes (variables) and the effective combination of the superior genes from different good individuals could more easily produce better offspring, we introduce a novel gene recombination operator (GRO) into ABC to accelerate convergence. To be specific, in GRO, a part of good solutions in the current population are selected to produce candidate solutions by the gene combination. Especially, each good solution recombines with only one other good solution to generate only one candidate solution. In addition, GRO will be launched at the end of each generation. In order to validate its efficiency and effectiveness, GRO is embedded into nine versions of ABC, i.e., the original ABC, GABC, best-so-far ABC(BSFABC), MABC, CABC, ABCVSS, qABC, dABC and distABC, while yields GRABC, GRGABC, GRBSFABC, GRMABC, GRCABC, GRABCVSS, GRqABC, GRdABC and GRdistABC respectively. The experimental results on 22 benchmark functions demonstrate that GRO could enhance the exploitation ability of ABCs and accelerate convergence without loss of diversity.     

Artificial bee colony algorithm solution for optimal reactive power flow

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.     

基于模拟退火的蚁群算法求解Job-Shop问题

引用蚁群算法来解决Job-Shop问题(简称JSP),但是由于蚁群算法本身的原理和Job-Shop问题之间的差异性,使得用基本的蚁群算法来解决Job-Shop问题存在一些缺陷.从蚁群算法的改进入手,采用了不同策略的信息素更新方法,并采用模拟退火算法对搜索到的解进行处理,不仅加快了算法的收敛速度,而且能收敛到更好的解,最后用实例对算法的有效性进行了验证.     

基于模拟退火算法思想的粒子群优化算法

粒子群优化是由Eberhart博士和Kennedy博士于1995年根据鸟或鱼群居社会行为而提出的。本文提出了4种改进的算法,特别推荐结合模拟退火算法思想提出的一种新算法。经过与基本粒子群算法比较测试,证实它是一种简单有效的算法。     

基于改进全局人工蜂群算法的WSN节点定位研究

无线传感器网络(Wireless Sensor Network,WSN)系统性能的提高,离不开对WSN中每一个传感器节点地理位置的精准定位。全局人工蜂群算法在基本人工蜂群算法的基础上,在邻域搜索后将迭代最优解添加到新解的更新公式中,提高了算法的开发能力。但将其应用于WSN节点位置求解时,存在计算时间长、收敛不稳定的问题。提出一种改进的全局人工蜂群算法,在邻域搜索后对新解进行衡量,若新解适应值在可接受的范围内,与迭代最优解进行交叉操作;若新解适应值较好,不与迭代最优解进行交叉操作;若新解适应值较差,舍弃新解。这较好地平衡了算法的探索和开发能力。求解WSN节点位置时,证明了该算法有更快的收敛速度和更好的收敛效果。     

免疫优化算法及应用

针对函数的寻优问题,设计一种免疫优化算法,运用克隆选择机制,在克隆选择算法的基础上,采用了基于抗体生存期望值的多样性保持策略,并引人了仿真退火思想,对进行超变异后的个体进行处理,保留亲和力得到改善的个体,以一定概率接受亲和力没有得到提高的个体,并产生新解替换那些未被接受的个体,加快了算法的收敛速度,提高了抗体的种群多样性.采用算法对二维函数进行优化,仿真结果表明了方法的有效性,并通过与未引入仿真退火思想的算法进行比较,表明该方法收敛速度快,稳定性好,具有更好的优化性能.     

可靠性优化的蚁群算法

建立了可靠性冗余优化模型,分析了各种优化方法的优缺点。采用模拟退火算法、遗传算法和蚁群算法分别解决了此问题,并通过实例,结果表明蚁群算法比较有效。     

一种改进搜索策略的人工蜂群算法

为克服人工蜂群算法原有搜索策略存在探索能力强而开采能力弱的缺点,受差分进化算法的启发,提出了一种新的搜索策略,在种群最优解的附近产生新的候选位置,有助于提高人工蜂群算法的开采能力.同时,为了平衡算法的探索和开采能力,将种群中的个体随机分成两组,每组采用不同的搜索策略同时寻优.对6个基准测试函数进行仿真的结果表明,改进的搜索算法相比基本人工蜂群算法能有效地改善寻优性能,增强算法摆脱局部最优的能力.     

基于模拟退火及蜂群算法的优化特征选择算法

为了解决中文文本分类中初始特征空间维数过高带来的“维数灾难”问题,提高分类精度和分类效率,提出了一种基于模拟退火及蜂群算法的优化特征选择算法.该算法中,以蜂群算法流程为主体,根据蜜蜂群体觅食的特点快速寻找最优解,并且针对蜂群算法容易陷入局部最优解的问题,把模拟退火算法机制引入其中.该算法既保留了蜂群算法群体寻优的特点,又可以有效地避免陷入局部最优解.通过选择合适的收益率函数和温度下降函数,用实验的方法与卡方统计、信息增益和互信息等算法进行比较,表明了该算法的可行性和有效性.     

Development and investigation of efficient artificial bee colony algorithm for numerical function optimization

Artificial bee colony algorithm (ABC), which is inspired by the foraging behavior of honey bee swarm, is a biological-inspired optimization. It shows more effective than genetic algorithm (GA), particle swarm optimization (PSO) and ant colony optimization (ACO). However, ABC is good at exploration but poor at exploitation, and its convergence speed is also an issue in some cases. For these insufficiencies, we propose an improved ABC algorithm called I-ABC. In I-ABC, the best-so-far solution, inertia weight and acceleration coefficients are introduced to modify the search process. Inertia weight and acceleration coefficients are defined as functions of the fitness. In addition, to further balance search processes, the modification forms of the employed bees and the onlooker ones are different in the second acceleration coefficient. Experiments show that, for most functions, the I-ABC has a faster convergence speed and better performances than each of ABC and the gbest-guided ABC (GABC). But I-ABC could not still substantially achieve the best solution for all optimization problems. In a few cases, it could not find better results than ABC or GABC. In order to inherit the bright sides of ABC, GABC and I-ABC, a high-efficiency hybrid ABC algorithm, which is called PS-ABC, is proposed. PS-ABC owns the abilities of prediction and selection. Results show that PS-ABC has a faster convergence speed like I-ABC and better search ability than other relevant methods for almost all functions.     

基于能量最小化的立体匹配方法研究

选择图像的边缘特征点作为匹配基元,以边缘梯度的大小、方向和拉普拉斯值作为特征点处的属性值,根据Marr的立体匹配约束条件,建立一个0-1对应状态空间和全局能量函数。最后用模拟退火算法,随着对状态空间的随机扰动,使能量函数达到全局最小,实现所有特征点的匹配。     

An enhanced ABC algorithm for single machine order acceptance and scheduling with class setups

This paper considers the order acceptance and scheduling problem in a single machine environment where each customer order is characterized by a known processing time, due date, revenue, and class setup time. The objective is to maximize the total revenue. Since the problem is computationally intractable, we first conduct a preliminary study of applying the basic artificial bee colony algorithm to address the problem under study. Specifically, we design appropriate neighborhood operators with respect to the problem. Based on the results of the preliminary study and the problem characteristics, an enhanced artificial bee colony algorithm is developed with a series of modifications. The extensive experimental results indicate that the enhanced artificial bee colony algorithm is both computationally efficient and effective for large sized problem instances.     

求解高维函数优化问题的混合蜂群算法

为了提高人工蜂群算法求解复杂优化函数的全局搜索能力,提出了多父体杂交算法、差分进化算法和蜂群算法的混合蜂群算法(Hybrid artificial bcc colony algorithm, HABC) 。 HABC的核心在于,采用多父体杂交算子提高人工蜂群算法的全局搜索能力,通过淘汰相同个体保证群体的多样性,利用差分进化算子加快人工蜂群算法的收敛速度。高维函数优化问题的仿真结果表明,该算法全局搜索能力好,收敛速度快。