A Case Study in Using Protégé2000 as a Tool for

Abstract. This article describes a case study in which Protégé-2000 was used to build a tool for constructing CommonKADS knowledge models. The case study tries to capitalize on the strong points of both approaches in the tool-support and modelling areas. We specify the CommonKADS knowledge model as an ontology in the Protégé specification formalism, and define a number of visualizations for the resulting types. The study shows that this type of usage of Protégé-2000 as a “metaCASE ” tool is to a large extent feasible. In particular, the flexible class/instance distinction in Protégé is a feature that is needed for undertaking such a metamodelling exercise. The case study revealed a number of problems, such as the representation of rule types. The study also led to a set of f new tool requirements, such as extended expressivity of the Protégé forms.