Critical evaluation of paradigms for modelling integrated supply chains
- ISSN: 00981354
- DOI: 10.1016/j.compchemeng.2009.01.023
Abstract
Contemporary problems in process systems engineering often require model-based decision support tool. Among the various modelling paradigms, equation-based models and agent-based models are widely used to develop dynamic models of sys- tems. Which is the most appropriate modelling paradigm for a supply chain? In this paper, we seek to address this important question through a well-structured bench- marking process. First, we demonstrate that in the space of models, equations and agents are concepts of a different order, the former referring to the system description elements in the model while the latter emphasises the model elements. Thus conceptually, the two paradigms are not mutually exclusive. Next, in a case study different dynamic models of an oil refinery supply chain are developed, using different tools and approaches. By performing detailed experiments with two differ- ent models, it is demonstrated that the models are equivalent when compared using model definition, numerical results and recommended decisions. However, the mod- elling process itself is different and results in different model structures. By analysing the effort required to expand the models, allowing new scenarios to be tested, and reuse of model components, we identify the strengths of the two paradigms in the context of supply chain modelling.
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