the heuristic and metahuristic methods to minimize the total completion and total tardiness jobs times problem

In this paper, we found some methods for solving one of the bicriteria machine scheduling problems (bmsp). our discussed problem is represented by the total completion and the total tardiness jobs times (1//( pcj , ptj )) simultaneously. in order to solve the suggested bmsp, some new heuristic and metaheuristic methods are proposed which are produced good results. the results of the new suggested methods are compared with the exact method; like the complete enumeration method (cem) and branch and bound (bab) method, then compared results of the heuristics with each other’s to obtain to the most efficient method.