Abstract

This chapter introduces concepts and principles associated with the verification and validationVerification and validation process of simulation models, mainly in the context of models of complete systems. The word ‘verification’ is used here to describe testing processes to establish whether a computer-based representation correctly describes the underlying mathematical, logical and theoretical structure of the model. The word ‘validation’ is used to describe procedures for establishing whether the model fidelity is adequate for the purposes of the given application. Verification is internal to the model and the computer-based representation while validation processes involve information external to the model, normally using dataData or observations from the corresponding real system. The goal of the testing process for a simulation model must always be to establish the extent to which a model has the quality and credibilityCredibility required for the intended applicationIntended application. These model testingTesting processes, involving both verification and validation, are inherently iterative.