A genetic algorithm for project scheduling in activity networks under resource ...

• Author(s): Silva, Hélder C. ; Oliveira, José A. ; Tereso, Anabela Pereira
• Date: 2011
• Persistent ID: http://hdl.handle.net/1822/15524
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Project management; Scheduling; Complementarity of resources
• Document Type: Conference Object
• Language: English

Description

We address the issue of optimal resource allocation, and more specifically, the analysis of complementarity of resources (primary resource or P-resource and supportive resource or S-resource) to activities in a project. The concept of complementarity can be incorporated into the engineering domain as an enhancement of the efficacy of a "primary" resource (P-resource) by adding to it other "supportive" resources (S-resources). We developed a Genetic Algorithm capable of determining the ideal mixture of resources allocated to the activities of a project, such that the project is completed with minimal cost. This problem has a circularity issue that greatly increases its complexity. In this paper we present a constructive algorithm to build solutions from a chromosome that will be integrated in a Genetic Algorithm, which we illustrate by application to a small instance of the problem. The Genetic Algorithm is based on a random keys chromosome that is very easy to implement and allows using conventional genetic operators for combinatorial optimization problems. A project is formed by a set of activities. Each activity uses a specific set of resources, and it is also necessary to guarantee that there is no overlap in the time it takes to process activities in the same resource.