Project Scheduling and Cost Minimization with Multiple Availability Constrained Resources under Stochastic Conditions

Rui Moutinho and Anabela Tereso
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Rui Moutinho: Department of Production and Systems Engineering, University of Minho, Guimarães, Portugal
Anabela Tereso: Department of Production and Systems Engineering, University of Minho, Guimarães, Portugal

International Journal of Human Capital and Information Technology Professionals (IJHCITP), 2015, vol. 6, issue 4, 46-63

Abstract: The authors propose a mathematical model to minimize the project total cost where there are multiple resources constrained by maximum availability. They assume the resources as renewable and the activities can use any subset of resources requiring any quantity from a limited real interval. The stochastic nature is inferred by means of a stochastic work content defined per resource within an activity and following a known distribution and the total cost is the sum of the resource allocation cost with the tardiness cost or earliness bonus in case the project finishes after or before the due date, respectively. The model was computationally implemented relying upon an interchange of two global optimization metaheuristics – the electromagnetism-like mechanism and the evolutionary strategies. Two experiments were conducted testing the implementation to projects with single and multiple resources, and with or without maximum availability constraints. The set of collected results shows good behavior in general and provide a tool to further assist project manager decision making in the planning phase.

Date: 2015
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