Download or read book The Shifting Bottleneck Procedure for Job Shop Scheduling written by Joseph Adams and published by . This book was released on 1986 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an approximation method for solving the minimum makespan problem of job shop scheduling. It sequences the machines one by one, successively, taking each time the machine identified as a bottleneck among the machines not yet sequenced. Every time after a new machine is sequenced, all previously established sequences are locally reoptimized. Both the bottleneck identification and the local reoptimization procedures are based on repeatedly solving certain one-machine scheduling problems. Besides this straight version of the Shifting Bottleneck Procedure, we have also implemented a version that applies the procedure to the nodes of a truncated search tree. Computational testing shows that our approach yields consistently better results than other procedures discussed in the literature. A high point of our computational testing occurred when the enumerative version of the Shifting Bottleneck Procedure found in a little over five minutes an optimal schedule to a notorious ten machines/ten jobs problem on which many algorithms have been run for hours without finding an optimal solution. Keywords: Heuristics.

Download or read book A Modified Shifting Bottleneck Approach to Job Shop Scheduling with Sequence Dependent Setups MSBSS written by Xiaoqing Sun and published by . This book was released on 1997 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research addresses the NP-Hard, practical problem of scheduling jobs with release dates, due dates and sequence dependent setups where the scheduling objective is to minimize the weighted sum of squared tardiness. Such a problem is practically relevant due to the fact that there are numerous industrial settings that involve sequence dependent setups. A shifting bottleneck based method (MSBSS) is developed for job shop scheduling with sequence dependent setups, which balances both efficiency and optimality. As a key component of MSBSS, a Lagrangian relaxation based approach (LRSSS) is also developed for single-machine scheduling with sequence dependent setups. Sequence dependent setups are formulated into capacity constraints, then the capacity constraints are relaxed using a Lagrangian multiplier. The primal problem is decomposed into job-level subproblems which are solved optimally and an approximation dual problem is then solved using a sub-gradient technique. The result of the relaxation is a list of jobs sequenced by beginning times that is then improved via a three-way enumeration. Experimental results are compared with EDD (earliest due date), ATCS (apparent tardiness cost with sequence dependent setups), dispatching rules, a 4-way enumeration local search, tabu search, and simulated annealing. The LRSSS approach results in superior solution quality with respect to EDD, ATCS, 4-way enumeration and tabu search results. It has comparable solution quality to the simulated annealing results, but is substantially more efficient. The LRSSS is then extended to job shop scheduling with sequence dependent setups, due dates and release dates. The resulting MSBSS procedure decomposes the job shop scheduling problem into a series of single-machine scheduling problems. Machines are scheduled in order of criticality defined as the marginal contribution of a machine to the objective function. The MSBSS approach is compared with EDD, ATCS, and SIMSET (similar setup times) dispatching rules. The MSBSS approach results in superior solution quality to the results of other dispatching rules. Overall the research has resulted in two efficient scheduling procedures (LRSSS and MSBSS) that fill an important gap in algorithm design dealing with practical, realistically sized scheduling problems.

Download or read book Intelligent and Evolutionary Systems written by Mitsuo Gen and published by Springer Science & Business Media. This book was released on 2009-03-12 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers fourteen select papers presented at the recent Asia-Pacific Symposia on Intelligent and Evolutionary Systems. They illustrate the breadth of research in the field with applications ranging from business to medicine to network optimization.

Download or read book Meta Heuristics written by Ibrahim H. Osman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meta-heuristics have developed dramatically since their inception in the early 1980s. They have had widespread success in attacking a variety of practical and difficult combinatorial optimization problems. These families of approaches include, but are not limited to greedy random adaptive search procedures, genetic algorithms, problem-space search, neural networks, simulated annealing, tabu search, threshold algorithms, and their hybrids. They incorporate concepts based on biological evolution, intelligent problem solving, mathematical and physical sciences, nervous systems, and statistical mechanics. Since the 1980s, a great deal of effort has been invested in the field of combinatorial optimization theory in which heuristic algorithms have become an important area of research and applications. This volume is drawn from the first conference on Meta-Heuristics and contains 41 papers on the state-of-the-art in heuristic theory and applications. The book treats the following meta-heuristics and applications: Genetic Algorithms, Simulated Annealing, Tabu Search, Networks & Graphs, Scheduling and Control, TSP, and Vehicle Routing Problems. It represents research from the fields of Operations Research, Management Science, Artificial Intelligence and Computer Science.

Download or read book Extension Configuration and the Advantages of the Shifting Bottleneck Approach for Solving Dynamic Job Shop Scheduling Problems in Production and Logistics Processes written by Yi Tan and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Shifting Bottleneck Procedure for Job shops with Parallel Machines written by Marvin Lee and published by . This book was released on 2000 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Essays and Surveys in Metaheuristics written by Celso C. Ribeiro and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finding exact solutions to many combinatorial optimization problems in busi ness, engineering, and science still poses a real challenge, despite the impact of recent advances in mathematical programming and computer technology. New fields of applications, such as computational biology, electronic commerce, and supply chain management, bring new challenges and needs for algorithms and optimization techniques. Metaheuristics are master procedures that guide and modify the operations of subordinate heuristics, to produce improved approx imate solutions to hard optimization problems with respect to more simple algorithms. They also provide fast and robust tools, producing high-quality solutions in reasonable computation times. The field of metaheuristics has been fast evolving in recent years. Tech niques such as simulated annealing, tabu search, genetic algorithms, scatter search, greedy randomized adaptive search, variable neighborhood search, ant systems, and their hybrids are currently among the most efficient and robust optimization strategies to find high-quality solutions to many real-life optimiza tion problems. A very large nmnber of successful applications of metaheuristics are reported in the literature and spread throughout many books, journals, and conference proceedings. A series of international conferences entirely devoted to the theory, applications, and computational developments in metaheuristics has been attracting an increasing number of participants, from universities and the industry.

Download or read book A Computational Study of Shifting Bottleneck Procedures for Shop Scheduling Problems written by Ebru Demirkol and published by . This book was released on 1996 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The shifting bottleneck procedure for the job shop problem written by and published by . This book was released on 2003 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Minimization of Weighted Tardiness in Job Shops Using Shifting Bottleneck and Tabu Search Procedures written by Srinivasa Rao Bongarala and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scheduling to meet set due dates is one of the most critical issues in modern production systems. One measure of schedule effectiveness in the presence of due dates is weighted tardiness since it can capture the cost of contractual penalties and other losses to an organization. This research work concentrates on the problem of minimizing the total weighted tardiness in classical job shops. Job shop scheduling problems are among the hardest known combinatorial optimization problems. In particular the problem of minimizing tardiness in job shops is strongly NP-hard, which makes finding optimal solutions to it impractical in most realistic situations. We approach this problem using two well known heuristics, namely the shifting bottleneck procedure and tabu search. Both heuristics are known to perform very well for minimizing makespan in job shops. Here we adapt them for the objective of minimizing weighted tardiness and test both under different parameter settings in order to select implementations that give the best results for a given computational effort. We test our algorithms with problem instances taken from the literature and with randomly generated instances. We present our observations and conclusions regarding the relative performance of these heuristics and their performance in comparison with dispatching rules. In particular, we find that the shifting bottleneck procedure outperforms tabu search for this problem.

Download or read book Handbook on Scheduling written by Jacek Blazewicz and published by Springer. This book was released on 2019-04-25 with total page 833 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a theoretical and application-oriented analysis of deterministic scheduling problems in advanced planning and computer systems. The text examines scheduling problems across a range of parameters: job priority, release times, due dates, processing times, precedence constraints, resource usage and more, focusing on such topics as computer systems and supply chain management. Discussion includes single and parallel processors, flexible shops and manufacturing systems, and resource-constrained project scheduling. Many applications from industry and service operations management and case studies are described. The handbook will be useful to a broad audience, from researchers to practitioners, graduate and advanced undergraduate students.

Download or read book Evolutionary Computation in Combinatorial Optimization written by Jens Gottlieb and published by Springer Science & Business Media. This book was released on 2004-03-26 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings for the 4th European Conference on Evolutionary Computation in Combinatorial Optimization, EvoCOP 2004, held in Coimbra, Portugal, in April together with EuroGP 2004 and six workshops on evolutionary computing. The 23 revised full papers presented were carefully reviewed and selected from 86 submissions. Among the topics addressed are evolutionary algorithms as well as metaheuristics like memetic algorithms, ant colony optimization, and scatter search; the papers are dealing with representations, operators, search spaces, adaptation, comparison of algorithms, hybridization of different methods, and theory. Among the combinatorial optimization problems studied are graph coloring, network design, cutting, packing, scheduling, timetabling, traveling salesman, vehicle routing, and various other real-world applications.

Download or read book Computer Aided Systems Theory EUROCAST 2007 written by Roberto Moreno Díaz and published by Springer. This book was released on 2007-11-16 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the 11th International Conference on Computer Aided Systems Theory, EUROCAST 2007. Coverage in the 144 revised full papers presented includes formal approaches, computation and simulation in modeling biological systems, intelligent information processing, heuristic problem solving, signal processing architectures, robotics and robotic soccer, cybercars and intelligent vehicles and artificial intelligence components.

Download or read book Theoretical and Practical Aspects of Ant Colony Optimization written by Christian Blum and published by IOS Press. This book was released on 2004 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combinatorial optimization problems are of high academical and practical importance. Unfortunately, many of them belong to the class of NP-hard problems and are therefore intractable. In other words, as their dimension increases, the time needed by exact methods to find an optimal solution grows exponentially. Metaheuristics are approximate methods for attacking these problems. An approximate method is a technique that is applied in order to find a good enough solution in a reasonable amount of time. Examples of metaheuristics are simulated annealing, tabu search, evolutionary computation, and ant colony optimization (ACO), the subject of this book. The contributions of this book to ACO research are twofold. First, some new theoretical results are proven that improve our understanding of how ACO works. Second, a new framework for ACO algorithms is proposed that is shown to perform at the state-of-the-art level on some important combinatorial optimization problems such as the k-cardinality tree problem and the group shop scheduling problem, which is a general shop scheduling problem that includes among others the well-known job shop scheduling and the open shop scheduling problems.

Download or read book Heuristic Scheduling Systems written by Thomas E. Morton and published by John Wiley & Sons. This book was released on 1993-09-10 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflects exact and heuristic methods of scheduling techniques suitable for creating customized sequencing and scheduling systems for flexible manufacturing, project management, group and cellular manufacturing operations. Summarizes complex computational studies demonstrating how they work in practice. Contains new theories and techniques developed by the author. Includes a software disk to reinforce and practice the methods described.

Download or read book Metaheuristics for Scheduling in Industrial and Manufacturing Applications written by Fatos Xhafa and published by Springer. This book was released on 2008-08-22 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decades scheduling has been among the most studied op- mization problemsanditisstillanactiveareaofresearch!Schedulingappears in many areas of science, engineering and industry and takes di?erent forms depending on the restrictions and optimization criteria of the operating en- ronments [8]. For instance, in optimization and computer science, scheduling has been de?ned as “the allocation of tasks to resources over time in order to achieve optimality in one or more objective criteria in an e?cient way” and in production as “production schedule, i. e. , the planning of the production or the sequence of operations according to which jobs pass through machines and is optimal with respect to certain optimization criteria. ” Although there is a standardized form of stating any scheduling problem, namely “e?cient allocation ofn jobs onm machines –which can process no more than one activity at a time– with the objective to optimize some - jective function of the job completion times”, scheduling is in fact a family of problems. Indeed, several parameters intervene in the problem de?nition: (a) job characteristics (preemptive or not, precedence constraints, release dates, etc. ); (b) resource environment (single vs. parallel machines, un- lated machines, identical or uniform machines, etc. ); (c) optimization criteria (minimize total tardiness, the number of late jobs, makespan, ?owtime, etc. ; maximize resource utilization, etc. ); and, (d) scheduling environment (static vs. dynamic,intheformerthenumberofjobstobeconsideredandtheirready times are available while in the later the number of jobs and their charact- istics change over time).

Download or read book Supply Chain Structures written by Jing-Sheng Song and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the foreword to Supply Chain Structures, Professor Paul Zipkin notes three global changes that have enabled the recent vast developments in the field of supply chains. Moreover, these changes may be only the beginning and more change is likely in the fast-moving field of supply chain management. These global changes are: the explosive growth of the Internet; the growth in free-market economies with the corresponding political interest in global economic stability; and the emergence of a global managerial culture focused on performance, quality, and service. Professor Zipkin goes on to say "In Supply Chain Structures, the editors Jeannette Song and David Yao have collected a spectrum of approaches to these challenges from some of the leading scholars of supply chains, from both the academic and commercial worlds. Each of the articles offers an interesting and illuminating way to think about the key issues in supply chain management. Some also offer practical techniques to solve important problems. Together they provide an excellent survey of the current state of the art in research and practice."