ACE View � an ontology and rule editor based on controlled English

We describe the architecture of a novel ontology and rule editor ACE View. The goal of ACE View is to simplify viewing and editing expressive and syntactically complex OWL/SWRL knowledge bases by making most of the interaction with the knowledge base happen via Attempto Controlled English (ACE). This makes ACE View radically different from current OWL/SWRL editors which are based on formal logic syntaxes and general purpose graphical user interface widgets. ACE View integrates two mappings, ACE →OWL/SWRL and OWLACE, and is implemented as a plug-in for Protégé 4