Abstract
For my thesis work I am developing a method for evaluating and standardizing ontologies based on an integration of the Basic Formal Ontology (BFO) and OntoClean. BFO serves as the upper ontology for the domain ontologies of the Open Biomedical Ontologies (OBO) Foundry 1. The OBO Foundry initiative is a collaborative effort for developing interopera-ble, science-based ontologies. OntoClean is an approach for the quality assurance of ontologies, and helps a modeler de-tect when the subsumption relation is used improperly.