求解流水车间调度问题的混合粒子群算法

针对最小化流水车间调度总完工时间问题,提出了一种混合的粒子群优化算法(Hybrid Particle Swarm Algorithm,HPSA),采用启发式算法产生初始种群,将粒子群算法、遗传操作以及局部搜索策略有效地结合在一起。用Taillard’s基准程序随机产生大量实例,实验结果显示:HPSA通过对种群选取方法的改进和搜索范围的扩大提高了解的质量,在性能上均优于目前较有效的启发式算法和混合的禁忌搜索算法,产生最好解的平均百分比偏差和标准偏差均显著下降,最优解所占比例大幅度提高。     

自适应混合粒子群算法求解置换流水车间调度问题

为更有效地解决以最大完工时间最小化为目标的置换流水车间调度问题,提出了一种自适应混合粒子群算法（SHPSO）。该算法结合Q学习设计了参数自适应更新策略,以平衡算法的探索和开发;同时引入粒子停滞判断方法,使用平局决胜机制和Taillard加速算法改进基于迭代贪婪的局部搜索策略,对全局极值进行局部搜索,帮助粒子跳出局部最优。实验结果表明,SHPSO算法取得的平均相对百分偏差（RPDavg）对比其他四种改进PSO算法至少下降了83.2%,在求解质量上具有明显优势。     

Multi-objective two-stage multiprocessor flow shop scheduling – a subgroup particle swarm optimisation approach

Flow shop production system – compared to other economically important production systems – is popular in real manufacturing environments. This study focuses on the flow shop with multiprocessor scheduling problem (FSMP), and develops an improved particle swarm optimisation heuristic to solve it. Additionally, this study designs an integer programming model to perform effectiveness and robustness testing on the proposed heuristic. Experimental results demonstrate a 10% to 50% improvement in the effectiveness of the proposed heuristic in small-scale problem tests, and a 10% to 40% improvement in the robustness of the heuristic in large-scale problem tests, indicating extremely satisfactory performance.     

A new particle swarm optimization for the open shop scheduling problem

This paper presents a new particle swarm optimization (PSO) for the open shop scheduling problem. Compared with the original PSO, we modified the particle position representation using priorities, and the particle movement using an insert operator. We also implemented a modified parameterized active schedule generation algorithm (mP-ASG) to decode a particle position into a schedule. In mP-ASG, we can reduce or increase the search area between non-delay schedules and active schedules by controlling the maximum delay time allowed. Furthermore, we hybridized our PSO with beam search. The computational results show that our PSO found many new best solutions of the unsolved problems.     

解决具有混合约束柔性流水车间调度问题的粒子群优化算法

针对既存在阻塞限制工件又存在无等待约束工件的柔性流水车间调度问题, 提出了一种离散粒子群优化的求解方法。该方法采用基于排列的编码形式, 设计了推进—迭代算法进行解码并计算问题目标值, 利用离散粒子群优化算法进行全局优化, 利用迭代贪婪(iterated greedy, IG)算法提高种群个体的局部搜索能力。此外, 根据问题特点, 提出最早释放优先(first release first, FRF)和最早完工优先(first complete first, FCF)两种机器分配策略。仿真结果表明, 所提出的方法求解混合约束下柔性流水车间调度问题是可行的、有效的。     

离散微粒群算法求解批量流水线调度问题

提出了解决批量流水线调度问题的离散微粒群优化算法。该算法采用了基于工序的编码方式,设计了新的粒子生成公式,从而使微粒群算法可以直接应用于调度问题。同时,针对微粒群算法容易陷入局部最优的缺陷,将其与模拟退火算法结合,得到了改进的微粒群优化算法。仿真实验表明了上述算法的有效性。     

一种求解作业车间调度的混合粒子群算法*

针对车间作业调度问题,提出了一种混合了知识进化算法和粒子群优化的算法。算法主要是结合知识进化算法的进化选择机制和粒子群优化的局部快速收敛性特性,首先让粒子替代知识进化算法中的进化个体,在群体空间中按粒子群优化规则寻找局部最优,然后根据知识进化算法的全局选择机制寻找全局最优,最后,将车间作业调度问题的特点融入到所提出的混合算法中求解问题。采用基准数据进行测试的仿真实验,并比对标准遗传算法,结果表明所提算法的有效性。     

求解无等待Job Shop调度的量子粒子群算法

针对无等待Job Shop问题,采用量子粒子群优化算法对其进行了求解。该算法采用位置矢量的编码方式,全左移验证方式计算适应值。最后通过MATLAB对实例问题的仿真测试,量子粒子群优化算法不仅收敛速度快,而且还具有较好的求解质量。     

解决零空闲流水线调度问题的离散粒子群算法

研究了以最大完工时间为目标的零空闲流水线调度问题.提出一种复杂度为O(nm)的最大完工时间算法和一种快速插入邻域搜索算法;提出了解决该问题的离散粒子群调度算法,并结合简化邻域搜索算法给出了提高调度算法性能的措施.仿真实验表明了所得算法的有效性.     

A hybrid particle swarm optimization for job shop scheduling problem

A hybrid particle swarm optimization (PSO) for the job shop problem (JSP) is proposed in this paper. In previous research, PSO particles search solutions in a continuous solution space. Since the solution space of the JSP is discrete, we modified the particle position representation, particle movement, and particle velocity to better suit PSO for the JSP. We modified the particle position based on preference list-based representation, particle movement based on swap operator, and particle velocity based on the tabu list concept in our algorithm. Giffler and Thompson’s heuristic is used to decode a particle position into a schedule. Furthermore, we applied tabu search to improve the solution quality. The computational results show that the modified PSO performs better than the original design, and that the hybrid PSO is better than other traditional metaheuristics.     

Static scheduling of directed acyclic data flow graphs onto multiprocessors using particle swarm optimization

An efficient method based on particle swarm optimization (PSO) is developed to solve the Multiprocessor Task Scheduling Problem (MPTSP). To efficiently execute parallelized programs on a multiprocessor environment, a scheduling problem must be solved to determine the assignment of tasks to the processors, the execution order of the tasks, and the starting time of each task, such that some optimality criteria are met. The scheduling problem is known as an NP-complete problem even when the target processors are fully connected and no communication delay is considered among the tasks in the task graph. The complexity of the scheduling problem depends on the number of tasks (N), the number of processors (M), the task processing time and the precedence constraints. The Directed Acyclic Graph (DAG) was exploited to represent the tasks and their precedence constraints. The proposed algorithm was compared with the Genetic Algorithm (GA) and the Duplication Scheduling Heuristic (DSH). We also provide a systematic investigation on the effect of varying problem settings. The results show that the proposed algorithm could not outperform the DSH while it could outperform the GA in some cases.     

A Pareto archive particle swarm optimization for multi-objective job shop scheduling

In this paper, we present a particle swarm optimization for multi-objective job shop scheduling problem. The objective is to simultaneously minimize makespan and total tardiness of jobs. By constructing the corresponding relation between real vector and the chromosome obtained by using priority rule-based representation method, job shop scheduling is converted into a continuous optimization problem. We then design a Pareto archive particle swarm optimization, in which the global best position selection is combined with the crowding measure-based archive maintenance. The proposed algorithm is evaluated on a set of benchmark problems and the computational results show that the proposed particle swarm optimization is capable of producing a number of high-quality Pareto optimal scheduling plans.     

改进离散粒子群算法求解柔性流水车间调度问题

针对以最小化完工时间为目标的柔性流水车间调度问题(FFSP),提出了一种改进离散粒子群(DPSO)算法.所提算法重新定义粒子速度和位置的相关算子,并引入编码矩阵和解码矩阵来表示工件、机器以及调度之间的关系.为了提高柔性流水车间调度问题求解的改进离散粒子群算法的初始群体质量,通过分析初始机器选择与调度总完工时间的关系,首次提出一种基于NEH算法的最短用时分解策略算法.仿真实验结果表明,该算法在求解柔性流水车间调度问题上有很好的性能,是一种有效的调度算法.     

批量无等待调度问题的微粒群蛙跳混合优化算法*

将离散微粒群与蛙跳算法相结合解决以最大完工时间为指标的批量无等待流水线调度问题.结合微粒群算法较强的全局收敛能力和蛙跳算法较强的深度搜索能力,设计了三种混合算法,平衡了算法的全局开发能力和局部探索能力.对随机生成不同规模的实例进行了广泛的实验,仿真实验结果的比较表明了所得混合算法的有效性和高效性.     

猫群优化算法求解柔性作业车间调度问题

根据柔性作业车间的生产特点,对基本猫群优化算法进行设计和改进,提出了一种改进型猫群优化算法（Improved Cat Swarm Optimization,ICSO）,用于优化车间内工件的最大完工时间。算法给出了两段式个体位置编码方式和基于启发式算法的种群初始化策略;采用自适应行为模式选择方法,使其能够有效协调算法全局和局部搜索;提出了基于多样化搜寻算子的搜寻模式,增强算法的全局搜索能力;提出了基于莱维飞行的跟踪模式,增强算法的局部搜索能力。此外,算法中还引入了跳跃机制,使算法性能能够得到进一步的改善。实验数据表明ICSO算法在求解FJSP问题方面具有一定的有效性。     

一种求解作业车间调度的文化粒子群算法*

提出了一种文化粒子群算法用于求解置换流水车间调度问题中的最小化最大完成时间。算法设置了群体空间和信念空间两类独立空间,群体空间采用自适应粒子群算法完成进化,信念空间通过更新函数来进行演化。算法中群体空间的粒子群不但通过跟踪个体极值和全局极值来更新自己,实现群体演化,而且通过不断与信念空间中的优秀个体交互,加快群体的收敛速度。该算法在不同规模的问题实例上与其他几个具有代表性的算法的比较结果表明,该算法具有较快的收敛速度,无论是在求解质量还是稳定性方面都优于比较的算法。     

基于多班教学优化的多目标分布式混合流水车间调度

单工厂环境下的混合流水车间调度问题已受到广泛关注,而多工厂环境下的分布式混合流水车间调度问题(distributed hybrid flow shop scheduling problem,DHFSP)研究进展则较小.针对考虑顺序相关准备时间的DHFSP,提出一种多班教学优化(multi-class teaching-...     

柔性资源受限多项目调度的混沌粒子群算法研究

为解决柔性资源受限多项目的调度问题,有效实行资源分配和工作时间安排,采用混沌粒子群算法结合混合优先规则,形成优先规则序列。针对多项目问题,避免了传统方法将多个项目合并为一个项目,而是形成一个链表在项目的各工序间进行选择调度,并在初始化中嵌入混沌理论,在迭代过程中使用并行算法,有效避免了算法易陷入局部最优解的可能。改编标准库的多模式算例,对比多种算法下的结果,验证了该方法在求解该问题的可行性和有效性,对于项目管理中柔性资源受限问题具有实际应用价值。     

An improved particle swarm optimization algorithm for flowshop scheduling problem

The flowshop scheduling problem has been widely studied and many techniques have been applied to it, but few algorithms based on particle swarm optimization (PSO) have been proposed to solve it. In this paper, an improved PSO algorithm (IPSO) based on the “alldifferent” constraint is proposed to solve the flow shop scheduling problem with the objective of minimizing makespan. It combines the particle swarm optimization algorithm with genetic operators together effectively. When a particle is going to stagnate, the mutation operator is used to search its neighborhood. The proposed algorithm is tested on different scale benchmarks and compared with the recently proposed efficient algorithms. The results show that the proposed IPSO algorithm is more effective and better than the other compared algorithms. It can be used to solve large scale flow shop scheduling problem effectively.     

置换流水车间调度的蚁群优化算法

提出了一种求解置换流水车间调度的蚁群优化算法。该算法的要点是结合了NEH启发式算法和蚁群优化方法。理论论证和对置换流水车间调度问题的基准测试表明了该算法的有效性。