Technology of Ontology Visualization Based on Cognitive Frames for Graphical User Interface

This paper is dedicated to the issue of visualization of OWL ontologies to help their comprehension. In a previous work we showed a process of simplifying OWL ontologies by transforming them into a form called the User Presentation Ontology (UPO). In this paper we discuss some aspects of visual representation of ontologies for better understanding by human users. We present the approach of combining some UPO elements with special fragments called cognitive frames. It is expected that showing cognitive frames during visualization instead of just showing any terms linked with the chosen term will be more useful for ontology understanding. We determine some requirements for cognitive frames, define their types, and consider formal algorithms for constructing the frames.