Metrics for model transformations

One of the key concepts of model-driven engineering (MDE) is model transformation. Because of the crucial role of model transformations in MDE, they have to be treated in a similar way as traditional software artifacts. It is therefore necessary to define and assess their quality. In this paper we present three metric sets for assessing the quality of ATL, QVTO, and Xtend model transformations. We show the overlap between the metric sets, as well as their differences.