Abstract
Due to the dynamism of business, it is very important to support continuous improvement and automation of business processes. The Workflow Management Systems (WMS) is one of the most significant technologies for such automation. Likewise, the quality of business process models is essential to facilitate understandability and adaptability of models to the constant changes experienced by the processes they represent. Therefore, it is fundamental to have tools to choose from several modeling alternatives, the most appropriate to the business needs. It is also essential to have tools to measure the quality of these models. Therefore, we propose a set of metrics for measuring the quality of workflow models based on their adaptability and understandability. In addition, we introduce the results of the first practical validation of the metrics through a comparative experiment of two Workflow modeling languages: YAWL Vs UML Activity Diagrams 2.0.