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A Free Exchange of Space and Time-An Analysis of Some Creative Techniques in “Death of a Salesman”
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作者 朱晓静 夏春红 《海外英语》 2013年第11X期233-234,共2页
"Death of a Salesman"is important not only in its contents, but also in its creative techniques. This paper will focus on Miller's specific methods with which he depicts Willy's inner world. To be ex... "Death of a Salesman"is important not only in its contents, but also in its creative techniques. This paper will focus on Miller's specific methods with which he depicts Willy's inner world. To be exact, he borrowed some techniques from the films to achieve a free exchange of space and time, that is, to make Willy's remembrance and illusion audio-visual, making the play characteristic of the films. 展开更多
关键词 " DEATH of a salesman" FLASHBACK dissolve MEDIUM
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On the Symbolism in Arthur Miller’s Death of a Salesman
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作者 魏文萍 《海外英语》 2019年第19期182-183,共2页
Death of a Salesman is the greatest masterpiece of Arthur Miller.The play is about a common man trying to reach his American dream and the disillusionment of his dream.This paper mainly analyzes the symbols that are u... Death of a Salesman is the greatest masterpiece of Arthur Miller.The play is about a common man trying to reach his American dream and the disillusionment of his dream.This paper mainly analyzes the symbols that are used in the play to embody the theme. 展开更多
关键词 DEATH of a salesman SYMBOLS AMERICAN DREAM
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Death of a Salesman and American Dream 被引量:2
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作者 许丰田 《海外英语》 2012年第12X期231-233,共3页
American Dream refers to the belief of the majority of Americans.Through hard work,thrift,and determination,they can surely achieve a better life and live a comfortable life.Such an American Dream has a profound influ... American Dream refers to the belief of the majority of Americans.Through hard work,thrift,and determination,they can surely achieve a better life and live a comfortable life.Such an American Dream has a profound influence on several generations of Americans.American Dream has a close relationship with people' s working life and cultural activities.Death of a Salesman is a typical play about the pursuit and the illusionary of the Dream follower.In Death of a Salesman,the American Dream is the main hero as well as Willy Loman' s spiritual pillar.The pursuit,the realization,and the disillusionment of the American Dream develop with Willy and his family. 展开更多
关键词 AMERICAN DREAM DISILLUSIONMENT DEATH of a salesman
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The Flute Musicin Death of a Salesman
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作者 方丹霞 《海外英语》 2014年第11X期177-178,共2页
Arthur Miller's Death of a Salesman takes advantage of the flute music to strengthen the atmosphere of stage, thus acoustically making people immerse the scene of the drama. The paper explores the conflicts and co... Arthur Miller's Death of a Salesman takes advantage of the flute music to strengthen the atmosphere of stage, thus acoustically making people immerse the scene of the drama. The paper explores the conflicts and connections in this drama through the flute music, such as work and family, agriculture and business, work and family. 展开更多
关键词 DEATH of a salesman the FLUTE MUSIC
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A Brief Analysis on the Image of Loneliness in Death of a Salesman
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作者 李明然 《海外英语》 2017年第4期159-160,共2页
Arthur Miller is one of the representatives of American playwrights in 1940 s. Miller's contribution to modern drama lies in making a good expression of the common's tragedy in his drama. Thus he is called as&... Arthur Miller is one of the representatives of American playwrights in 1940 s. Miller's contribution to modern drama lies in making a good expression of the common's tragedy in his drama. Thus he is called as"an American Ibsenian playwright". The Death of a Salesman, Miller's masterwork, presents a society in pursuit of"success". In it, the hero is just a poor man with failures, and his disillusionment of dream ends up with his tragic death. This thesis primarily summarizes the former studies of the Death of a Salesman, and from a novel prospective, focuses on exploring the reasons and results of the hero's loneliness, so as to further the study of the tragic spirit in it. 展开更多
关键词 Death of a salesman LONELINESS FAMILY BETRAYAL TRAGEDY
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Ant-cycle based on Metropolis rules for the traveling salesman problem
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作者 龚劬 《Journal of Chongqing University》 CAS 2005年第4期229-232,共4页
In this paper, recent developments of some heuristic algorithms were discussed. The focus was laid on the improvements of ant-cycle (AC) algorithm based on the analysis of the performances of simulated annealing (SA) ... In this paper, recent developments of some heuristic algorithms were discussed. The focus was laid on the improvements of ant-cycle (AC) algorithm based on the analysis of the performances of simulated annealing (SA) and AC for the traveling salesman problem (TSP). The Metropolis rules in SA were applied to AC and turned out an improved AC. The computational results obtained from the case study indicated that the improved AC algorithm has advantages over the sheer SA or unmixed AC. 展开更多
关键词 heuristics algorithm simulate annealing algorithm metropolis rules ant colony algorithm ant-cycle algorithm traveling salesman problem (TSP)
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Novel Local Search Method for the Traveling Salesman Problem
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作者 黄文奇 王磊 《Journal of Southwest Jiaotong University(English Edition)》 2005年第1期1-4,共4页
A new local search method for the traveling salesman problem based on an original greedy representation of solution space and neighborhood structure is proposed. First, a partial closed route that only consists of thr... A new local search method for the traveling salesman problem based on an original greedy representation of solution space and neighborhood structure is proposed. First, a partial closed route that only consists of three cities is given; then other cities are added to this route by a greedy procedure successively. Implemented on a personal computer, this algorithm finds optimal solutions for 24 out of 27 standard benchmarks, and outperforms the Full Subpath Ejection Algorithm (F-SEC) proposed by Rego in 1998. 展开更多
关键词 Traveling salesman problem HEURISTICS Local search
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From Illusion to Disillusionment——An Analysis of the Character Willy Loman in Death of a Salesman
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作者 秦为添 《海外英语》 2021年第5期211-212,共2页
This is an analysis of the character Willy Loman in Arthur Miller’play Death of a Salesman,who is a salesman living in his own"American Dream".His dream is shattered and finally destroyed by reality,so he c... This is an analysis of the character Willy Loman in Arthur Miller’play Death of a Salesman,who is a salesman living in his own"American Dream".His dream is shattered and finally destroyed by reality,so he chooses to die in the hope that he may retain his dignity and practically render some help to his family with the assurance. 展开更多
关键词 Willy Loman ILLUSION SELF-DECEPTION DISILLUSIONMENT Death of a salesman
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“Alone” VS. “Lonely”:Eudora Welty's Idyllic View on Life inDeath of a Traveling Salesman
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作者 刘现合 木拉提.吐尔别克 《海外英语》 2013年第18期183-184,共2页
In Death of a Traveling Salesman,Eudora Welty's idyllic view on life in the countryside,her nostalgic feelings for the loss of the American Southern tradition,and her protest against the industrialization of the c... In Death of a Traveling Salesman,Eudora Welty's idyllic view on life in the countryside,her nostalgic feelings for the loss of the American Southern tradition,and her protest against the industrialization of the city life are demonstrated by compar ing the"alone"of the couple in the countryside and the"lonely"of R. J. Bowman as a traveling salesman in the city. 展开更多
关键词 EUDORA WELTY idyllic VIEW INDUSTRIALIZATION Americ
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Analysis The Manifestation of The Stream of Consciousness Technique in The Novel Death of A Salesman
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作者 高秀琴 《海外英语》 2020年第11期207-208,共2页
Death of A Salesman is the representative works,of the famous American playwright Arthur Miller(Arthur Miller,1915-2005).It is one of the most influential drama scripts in the history of American.This paper analyzes t... Death of A Salesman is the representative works,of the famous American playwright Arthur Miller(Arthur Miller,1915-2005).It is one of the most influential drama scripts in the history of American.This paper analyzes the performance of stream of consciousness,based on the stream of consciousness by way of analysis,layer by layer to reveal the theme of performance and realism in the novel Death of A Salesman,and deepen the meaning the author wants to express in the aspect of the art effect. 展开更多
关键词 Stream of Consciousness Death of A salesman Artistic Effect Manifestation
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Using Data Mining to Find Patterns in Ant Colony Algorithm Solutions to the Travelling Salesman Problem
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作者 阎世梁 王银玲 《现代电子技术》 2007年第5期117-119,共3页
Travelling Salesman Problem(TSP) is a classical optimization problem and it is one of a class of NP-Problem.The purposes of this work is to apply data mining methodologies to explore the patterns in data generated by ... Travelling Salesman Problem(TSP) is a classical optimization problem and it is one of a class of NP-Problem.The purposes of this work is to apply data mining methodologies to explore the patterns in data generated by an Ant Colony Algorithm(ACA) performing a searching operation and to develop a rule set searcher which approximates the ACA′s searcher.An attribute-oriented induction methodology was used to explore the relationship between an operations′ sequence and its attributes and a set of rules has been developed.At the end of this paper,the experimental results have shown that the proposed approach has good performance with respect to the quality of solution and the speed of computation. 展开更多
关键词 数据挖掘 数据管理系统 数据库 数据分析
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Combining deep reinforcement learning with heuristics to solve the traveling salesman problem
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作者 Li Hong Yu Liu +1 位作者 Mengqiao Xu Wenhui Deng 《Chinese Physics B》 2025年第1期96-106,共11页
Recent studies employing deep learning to solve the traveling salesman problem(TSP)have mainly focused on learning construction heuristics.Such methods can improve TSP solutions,but still depend on additional programs... Recent studies employing deep learning to solve the traveling salesman problem(TSP)have mainly focused on learning construction heuristics.Such methods can improve TSP solutions,but still depend on additional programs.However,methods that focus on learning improvement heuristics to iteratively refine solutions remain insufficient.Traditional improvement heuristics are guided by a manually designed search strategy and may only achieve limited improvements.This paper proposes a novel framework for learning improvement heuristics,which automatically discovers better improvement policies for heuristics to iteratively solve the TSP.Our framework first designs a new architecture based on a transformer model to make the policy network parameterized,which introduces an action-dropout layer to prevent action selection from overfitting.It then proposes a deep reinforcement learning approach integrating a simulated annealing mechanism(named RL-SA)to learn the pairwise selected policy,aiming to improve the 2-opt algorithm's performance.The RL-SA leverages the whale optimization algorithm to generate initial solutions for better sampling efficiency and uses the Gaussian perturbation strategy to tackle the sparse reward problem of reinforcement learning.The experiment results show that the proposed approach is significantly superior to the state-of-the-art learning-based methods,and further reduces the gap between learning-based methods and highly optimized solvers in the benchmark datasets.Moreover,our pre-trained model M can be applied to guide the SA algorithm(named M-SA(ours)),which performs better than existing deep models in small-,medium-,and large-scale TSPLIB datasets.Additionally,the M-SA(ours)achieves excellent generalization performance in a real-world dataset on global liner shipping routes,with the optimization percentages in distance reduction ranging from3.52%to 17.99%. 展开更多
关键词 traveling salesman problem deep reinforcement learning simulated annealing algorithm transformer model whale optimization algorithm
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考虑客户满意度的实时取送货路径优化问题
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作者 吴腾宇 张景露 余海燕 《运筹与管理》 CSSCI CSCD 北大核心 2024年第4期21-27,I0002,共8页
针对即时配送订单出现的动态性、服务客户的满意度、末端配送路网的非对称性,在配送订单的时间窗限制下,建立实时取送货路径优化模型。通过定义并调整非对称网络系数,构建非对称配送网络,提出滚动时域忽略策略(Ignore策略)和滚动时域实... 针对即时配送订单出现的动态性、服务客户的满意度、末端配送路网的非对称性,在配送订单的时间窗限制下,建立实时取送货路径优化模型。通过定义并调整非对称网络系数,构建非对称配送网络,提出滚动时域忽略策略(Ignore策略)和滚动时域实时判断策略(Real-time策略)。Ignore策略要求配送员一旦出发,返回配送起点前忽略所有新出现的订单,Real-time策略要求配送途中实时判断当新订单出现时,是否返回起点取货,重新规划配送路线。使用数值仿真软件,在不同非对称系数、客户时间窗、订单数量等的情形下分析策略适用性。数值算例分析表明,Real-time策略适用于网络较大的情形,而网络较小且订单数量较少时,Ignore策略更适用。研究结果可为城市末端合单配送和路径优化策略提供新的思路和参考。 展开更多
关键词 旅行商问题 合单配送 实时取送货 单边软时间窗 非对称网络
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海岛无人机多模式应急配送模型与算法研究
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作者 胡志华 魏月荷 田曦丹 《大连理工大学学报》 CAS CSCD 北大核心 2024年第6期649-660,共12页
灾害情况下物资海岛配送是应急物流的一种特殊应用场景.无人机配送作为解决应急物流问题的一种新型配送方式受到广泛关注,并涌现出了一系列配送模式.通过考虑无人机成本、无人机飞行距离、无人机起降平台和地面配送成本,构建无人机直接... 灾害情况下物资海岛配送是应急物流的一种特殊应用场景.无人机配送作为解决应急物流问题的一种新型配送方式受到广泛关注,并涌现出了一系列配送模式.通过考虑无人机成本、无人机飞行距离、无人机起降平台和地面配送成本,构建无人机直接配送、点对点双阶段配送、回路双阶段配送和双层物流配送网络4种配送模式.针对回路双阶段配送的多指标耦合特征,提出一种迭代启发式算法进行优化.围绕普陀山海岛场景,构建20~100个需求点和2~4个无人机起降平台的算例进行数值实验,分析并验证模型正确性和算法性能.实验结果表明,4种配送模式模型具有有效性;算法一般经过2~5次迭代,能够有效减少回路双阶段配送约19.08%的无人机飞行距离,减少双层物流配送网络约28.63%的地面配送距离. 展开更多
关键词 无人机配送 应急物流 选址-路径优化 旅行商问题 迭代启发式算法
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路径交叉测绘任务规划问题
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作者 王维 张开放 《陆军工程大学学报》 2024年第5期49-56,共8页
不同于传统多旅行商问题,小型飞机测绘任务规划问题的每个测绘目标需要测绘多个测绘载荷,同时多次测绘间要有时间间隔,称之为路径交叉的多旅行商路径规划问题。针对点目标测绘任务场景,将最少飞机数量的求解目标转化为求解最短航行路径... 不同于传统多旅行商问题,小型飞机测绘任务规划问题的每个测绘目标需要测绘多个测绘载荷,同时多次测绘间要有时间间隔,称之为路径交叉的多旅行商路径规划问题。针对点目标测绘任务场景,将最少飞机数量的求解目标转化为求解最短航行路径。在采用遗传算法求解最短路径的基础上,结合探测载荷约束、探测任务时长约束等条件,进一步规划出最优的调度方案。针对点目标和区域目标测绘任务规划问题,考虑各机场测绘任务工作量的均衡,定义测绘工作量指标为每个机场完成的测绘目标点和目标道路的数目,求解调度策略和飞机数量。在此基础上求解均衡性,使3个机场探测的目标点和目标道路数量相当。结果表明,所提方案兼顾了测绘代价与任务分配的均衡性。 展开更多
关键词 多旅行商问题 遗传算法 组合优化 多目标规划 测绘任务规划 均衡度
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基于动态熵进化的异构蚁群优化
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作者 王世科 游晓明 +1 位作者 尹玲 刘升 《电子科技》 2024年第10期6-14,共9页
针对蚁群算法在求解旅行商问题(Traveling Salesman Problem,TSP)时收敛速度慢、求解精度低等问题,文中提出了一种基于动态熵进化的异构蚁群优化算法。该算法中,由蚁群系统(Ant Colony System,ACS)和最大最小蚂蚁系统(Max-Min Ant Syste... 针对蚁群算法在求解旅行商问题(Traveling Salesman Problem,TSP)时收敛速度慢、求解精度低等问题,文中提出了一种基于动态熵进化的异构蚁群优化算法。该算法中,由蚁群系统(Ant Colony System,ACS)和最大最小蚂蚁系统(Max-Min Ant System,MMAS)构成异构双种群,实现种群间优势互补。文中提出动态熵进化策略,通过信息熵来动态控制种群间的交流频率,并将两个种群各自最优解的公共路径的信息素进行融合,以调节低熵种群最优路径上的信息素分布,进而有效保留两个种群的历史搜索信息以及加快算法收敛。将低熵种群最优解的非公共路径进行伪初始化,以扩大其在较优解附近的搜索范围,提高解的精度,从而实现两个种群的协同进化。仿真实验结果表明,所提算法在求解大规模旅行商问题时能有效平衡算法多样性与收敛性之间的关系。 展开更多
关键词 蚁群优化 异构种群 多样性 动态熵 协同进化 信息素融合 伪初始化 旅行商问题
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自适应大邻域搜索求解着色旅行商问题
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作者 陆永亮 吴庆华 +1 位作者 李建斌 左平聪 《运筹与管理》 CSSCI CSCD 北大核心 2024年第7期57-64,共8页
着色旅行商问题(Colored Traveling Salesman Problem,CTSP)来源于一类多机器人加工实践应用,在现实生活中有着广泛的应用场景。在CTSP中,每个旅行商各自分配一种特定的颜色,每个城市节点携带一个或者多个旅行商的颜色值,这些城市节点... 着色旅行商问题(Colored Traveling Salesman Problem,CTSP)来源于一类多机器人加工实践应用,在现实生活中有着广泛的应用场景。在CTSP中,每个旅行商各自分配一种特定的颜色,每个城市节点携带一个或者多个旅行商的颜色值,这些城市节点只能被带有相同颜色的旅行商访问。针对CTSP这个NP难问题,本文提出了一种高效的自适应大邻域搜索算法来求解CTSP。该算法包括四个重要的组成部分:一个随机贪心的初始解构造方法、四个专门的破坏操作和修复操作、一个高效的局部搜索程序和一个自适应破坏和修复操作选择机制。在文献中三组标准算例集上的实验结果表明,本文提出的自适应大邻域搜索算法能够高效地求解CTSP问题。 展开更多
关键词 着色旅行商 大邻域搜索 路径优化
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基于多顶点替换策略的迭代局部搜索算法解决覆盖推销员问题
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作者 武艳宇 成毅 葛文 《信息工程大学学报》 2024年第1期58-64,共7页
覆盖推销员问题(Covering Salesman Problem,CSP)是著名的旅行商问题的一个变体,是NP难问题。给定一组顶点和每个顶点相关联的预定覆盖半径,CSP的目标是在顶点子集上找到一个最短长度的哈密顿回路,使每个顶点被访问或者在被访问顶点的... 覆盖推销员问题(Covering Salesman Problem,CSP)是著名的旅行商问题的一个变体,是NP难问题。给定一组顶点和每个顶点相关联的预定覆盖半径,CSP的目标是在顶点子集上找到一个最短长度的哈密顿回路,使每个顶点被访问或者在被访问顶点的覆盖范围内。为提升搜索候选顶点集的质量,提出一种基于多顶点替换的搜索策略,并将该策略引入到迭代局部搜索算法解决CSP。所提CSP算法通过扰动过程和改进过程的迭代探索邻域最优解,其中扰动过程将搜索发散到未探索的区域,改进过程提升解的质量。实验结果表明,多顶点替换方法相比“移出-重新插入”过程可以获得更高质量的候选顶点集。所提CSP算法在寻优的正确率上取得了不错的成效,尽管运行速度与其他启发式算法相比有差距,但可以在合理的运行时间内解决CSP。 展开更多
关键词 覆盖推销员问题 旅行商问题 迭代局部搜索 启发式算法
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基于双层规划的装备保障优化预调度
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作者 胡志刚 楼京俊 史跃东 《现代防御技术》 北大核心 2024年第5期147-155,共9页
装备保障影响作战任务完成质量甚至直接关系任务成败,装备保障优化调度是提升装备保障系统效益的关键。针对装备保障系统双层决策和组合优化的特点,提出一种基于双层规划的装备保障优化预调度模型。分析装备保障系统运行过程和建模框架... 装备保障影响作战任务完成质量甚至直接关系任务成败,装备保障优化调度是提升装备保障系统效益的关键。针对装备保障系统双层决策和组合优化的特点,提出一种基于双层规划的装备保障优化预调度模型。分析装备保障系统运行过程和建模框架;结合组合优化问题,建立双层规划模型,上层为粗粒度层,采用MTSP(multiple travelling salesman problem)方法,下层为细粒度层,采用JSP(job-shop scheduling problem)方法;通过改进MTSP算法设计和迁移JSP算法描述构建双层迭代算法进行模型求解。算例分析表明:该方法在大规模系统优化调度中具有结构开放性和参数适应性。 展开更多
关键词 装备保障 双层规划 预调度 大规模优化调度 改进MTSP
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基于PSO算法的商旅问题探讨 被引量:1
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作者 韩林萍 朱昊云 +2 位作者 谢梦敏 马飞 王明杰 《河南科技》 2024年第10期32-35,共4页
【目的】商旅问题是指商人在访问多个城市时,要求不能走回头路且最终要回到起点,寻求这个过程中最短路径的问题。通过分析旅行商问题,探讨不同算法的应用范围,选择合适的算法来优化解决旅行商问题。【方法】根据目前各种寻优算法的特点... 【目的】商旅问题是指商人在访问多个城市时,要求不能走回头路且最终要回到起点,寻求这个过程中最短路径的问题。通过分析旅行商问题,探讨不同算法的应用范围,选择合适的算法来优化解决旅行商问题。【方法】根据目前各种寻优算法的特点,选择粒子群算法作为求优算法来解决商旅问题,并在此基础上进行优化改进。先确定权重因子和加速因子,再根据随机函数对粒子个体和种群进行算法变异,从而实现旅行商问题寻优算法的改进。在此基础上,通过粒子群算法和MATLAB算法编程,以实现优化结果。【结果】通过改进参数和引入变量函数进行寻优算法改进,有利于算法的收敛。【结论】改进后的寻优算法可以快速找到商人旅行过程的最优路径规划。 展开更多
关键词 粒子群算法PSO 优化问题 旅行商问题
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