Developing a hybrid simulation model using both parsimonious and highly descriptive approaches: Reflections from the transport industry

We put forward some initial thoughts about using both parsimonious and highly descriptive approaches to engage stakeholders during the development of a hybrid simulation study in the transport industry. The hybridisation we discuss involved combining discrete-event and agent-based simulation. We discuss how both parsimonious and highly descriptive modelling approaches, which are seemingly incompatible, were used in the development of a hybrid model to help facilitate stakeholder engagement. In our experience stakeholders with limited understanding of the system being modelled engaged with more ease when presented with highly descriptive approaches. When working with stakeholders with a better understanding, parsimonious approaches can be beneficial. We also discuss potential techniques for managing the complexity of large simulation projects by adapting ideas from software development to help modellers work with stakeholders