Due to the complicated circumstances in workshop, most of the conventional scheduling algorithms fail to meet the requirements of instantaneity, complexity, and dynamicity in job-shop scheduling problems. Compared with the static algorithms, dynamic scheduling algorithms can better fulfill the requirements in real situations. Considering that both flexibility and fuzzy processing time are commo...

Since their introduction, local search algorithms – and in particular tabu search algorithms – have consistently represented the state-of-the-art in solution techniques for the classical job-shop scheduling problem. This is despite the availability of powerful search and inference techniques for scheduling problems developed by the constraint programming community. In this paper, we introduce a...

In recent years, the manufacturing industry has developed rapidly with fierce competition. Manufacturing enterprises are faced challenge of on-time delivery, multiple product choices and quick response to order modification. Reasonable efficient production scheduling determines whether enterprise can continue survive. Therefore, study job shop problem practical significance. This paper summariz...

This paper reports a bibliographical study and some personnal works about the general Jobshop Problem and Jobshop Problems with setup times. Section 1 introduces some { usual { notations about the general problem. Speciic notations concerning with setup times will be introduced later. The bibliograacal study, in Section 2 focuses on recent papers on both problems. Section 3 presents a general s...

A frequently occurring operational problem is one of processing a given number of jobs (commodities) on a specified number of machines (facilities) referred to by various investigators as scheduling, dispatching, sequencing, or combinations thereof (Gupta and Stafford, 2006). In most manufacturing environments, a set of processes is needed to be serially performed in several stages before a job...

In our recent research, we showed results of the comparative study on effects of using several kinds of scheduling evaluation criteria as the fitness function of a genetic algorithm for job-shop scheduling. From these results, we obtained that the idle time criterion sometimes can provide a good makespan-minimizing schedule for a job-shop scheduling problem. In this paper, according to the abov...