How does your model represent the system? A note on model fidelity, underspecification, and uncertainty.

This article discusses the concept of model fidelity, underspecification, and uncertainty in the field of model-driven engineering (MDE). While there has been extensive research on conformity between models and metamodels, there is limited literature on how well a model represents the system it is intended to depict. The article introduces the concept of representativity, which refers to the level of refinement and accuracy of a model in relation to the system. It also explores the role of fidelity, underspecification, and uncertainty in modeling, highlighting the need for explicit consideration of these factors in order to improve the accuracy and effectiveness of models. The article concludes by emphasizing the importance of reasoning about representativity in various contexts, such as simulation, model composition, and system replacement. [Extracted from the article]