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Job-shop scheduling. Job-shop scheduling, the job-shop problem ( JSP) or job-shop scheduling problem ( JSSP) is an optimization problem in computer science and operations research. It is a variant of optimal job scheduling. In a general job scheduling problem, we are given n jobs J1 , J2 , ..., Jn of varying processing times, which need to be ...
Flow Shop Ordonnancement. Flow-shop scheduling is an optimization problem in computer science and operations research.It is a variant of optimal job scheduling.In a general job-scheduling problem, we are given n jobs J 1, J 2, ..., J n of varying processing times, which need to be scheduled on m machines with varying processing power, while trying to minimize the makespan – the total length ...
Job shop. A job shop is a manufacturing system that handles custom/bespoke or semi-custom/bespoke manufacturing processes, such as small to medium-size customer orders or batch jobs. Such a process is called "job production." Job shops typically move on to different jobs (possibly with different customers) when each job is completed.
Open-shop scheduling or open-shop scheduling problem ( OSSP) is an optimization problem in computer science and operations research. It is a variant of optimal job scheduling. In a general job-scheduling problem, we are given n jobs J1 , J2 , ..., Jn of varying processing times, which need to be scheduled on m machines with varying processing ...
Optimal job scheduling is a class of optimization problems related to scheduling. The inputs to such problems are a list of jobs (also called processes or tasks) and a list of machines (also called processors or workers ). The required output is a schedule – an assignment of jobs to machines. The schedule should optimize a certain objective ...
The Shifting Bottleneck Heuristic is a procedure intended to minimize the time it takes to do work, or specifically, the makespan in a job shop. The makespan is defined as the amount of time, from start to finish, to complete a set of multi-machine jobs where machine order is pre-set for each job. Assuming that the jobs are actually competing ...
Job shop scheduling – there are n jobs and m identical stations. Each job should be executed on a single station. This is usually regarded as an online problem. Open-shop scheduling – there are n jobs and m different stations. Each job should spend some time at each station, in a free order. Flow shop scheduling – there are n jobs and m ...
It is named after Edward G. Coffman, Jr. and Ronald Graham, who published it in 1972 for an application in job shop scheduling. In this application, the elements to be ordered are jobs, the bound W is the number of jobs that can be scheduled at any one time, and the partial order describes prerequisite relations between the jobs.