USING GRASP FOR RESOURCE AVAILABILITY COST PROBLEM WITH TIME DEPENDENT RESOURCE COST

In this paper, we consider the resource investment project scheduling problem of minimizing the total resource availability costs by a given project deadline subject to recruitment and release dates for resources with time dependent recruitment setup cost. The project contains activities interrelated by finish-start type precedence relations with a time lag of zero, which require a set of renewable resources. A mixed integer programming formulation is proposed for the problem. The problem formed in this way is an NP-hard one forcing us to use Greedy Randomized Adaptive Search Procedure (GRASP) algorithm to obtain a satisfying solution. The performance of the proposed algorithm is evaluated on 150 test problems by statistically comparing in term of the objective function and computational times. Comparative computational results reveal that the proposed algorithm is efficient and effective.

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