منابع مشابه
Job Shop Scheduling with Unit Length Tasks: Bounds and Algorithms
We consider the job shop scheduling problem unit−Jm, where each job is processed once on each of m given machines. Every job consists of a permutation of tasks for all machines. The execution of any task on its corresponding machine takes exactly one time unit. The objective is to minimize the overall completion time, called makespan. The contribution of this paper are the following results: (i...
متن کاملOn the power of randomization for job shop scheduling with k-units length tasks
In the job shop scheduling problem k-units-Jm there are m machines and each machine has an integer processing time of at most k time units. Each job consists of a permutation of m tasks corresponding to all machines and thus all jobs have an identical dilation D. The contribution of this paper are the following results: (i) For d = o( √ D) jobs and every fixed k, the makespan of an optimal sche...
متن کاملJob Shop Scheduling With Deadlines
In this paper we deal with a variant of the Job Shop Scheduling Problem. We consider the addition of release dates and deadlines to be met by all jobs. The objective is makespan minimization if there are no tardy jobs, and tardiness minimization otherwise. The problem is approached by using a Shifting Bottleneck strategy. The presence of deadlines motivates an iterative use of a particular one ...
متن کاملJob-shop scheduling
The n×m minimum-makespan general job-shop scheduling problem, hereafter referred to as the JSSP, can be described by a set of n jobs {Ji}1≤j≤n which is to be processed on a set of m machines {Mr}1≤r≤m. Each job has a technological sequence of machines to be processed. The processing of job Jj on machine Mr is called the operation Ojr. Operation Ojr requires the exclusive use of Mr for an uninte...
متن کاملHybrid job shop scheduling
We consider the problem of scheduling jobs in a hybrid job shop We use the term hybrid to indicate that we consider a lot of extensions of the classic job shop such as transportation times multiple resources and setup times The Shifting Bottleneck procedure can be generalized to deal with those extensions We test this approach for an assembly shop In this shop we study the in uence of static an...
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ژورنال
عنوان ژورنال: RAIRO - Theoretical Informatics and Applications
سال: 2011
ISSN: 0988-3754,1290-385X
DOI: 10.1051/ita/2011132