عنوان مقاله [English]
Timing a project with taking the limitations of resources into account is one of the issues with rich literature in the field of research in operation and project management. A great number of books and articles has been published regarding this field and two reasons can account for such an action: First, these issues are of high variety and second, since these issues are NP-Hard, scientists have also been looking for some more efficient ways to deal with these problems. The present study aims to propose a mathematical model with considering precedence relations; furthermore, it also aims at evaluating the efficiency of the firefly algorithm in solving RCPSP. To this end, a bi-objective mathematical model including time and cost, with regard to general precedence relations (GPR), has been proposed to time and manage the standard projects with resource constraint and then, using firefly metaheuristic algorithm composed with heuristic algorithm, relative answers in MATLAB software, version R2014a, have been acquired; moreover, in order to evaluate the efficiency of the firefly algorithm, the problem was solved using simulated annealing algorithm. The results reveled the accurate efficiency of the firefly algorithm as well as the acceptable function of the simulated annealing algorithm in solving the aforementioned problem; these results are way supreme when compared to those of best ways currently deployed.
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