Views
A model is an abstract construct to represent a system for the purposes of reproducing, simplifying, analyzing, or understanding it. Any model used is based on a perceptual model (summary of our (personal) perceptions on how a system responds), which gets translated into a conceptual model (mathematical description) and implemented as a procedural model (computer code) . Uncertainties in this process should be documented as part of the model development quality assurance process and made available to users, including an archive of test cases.