C.: A layered framework for pattern-based ontology evolution

Abstract. The challenge of ontology-driven modelling of information components is well known in both academia and industry. In this pa-per, we present a novel approach to deal with customisation and ab-straction of ontology-based model evolution. As a result of an empir-ical study, we identify a layered change operator framework based on the granularity, domain-specificity and abstraction of changes. The first two layers are based on generic and structural ontology change opera-tors, whereas layer three is based on user-defined domain-specific change patterns. The implementation of the operator framework is supported through layered change logs. Layered change logs capture the objective of ontology changes at a higher level of granularity and support a com-prehensive understanding of ontology evolution. The layered change logs are formalised using a graph-based approach. We identify the recurrent ontology change patterns from an ontology change log for their reuse. The identified patterns facilitate us in optimizing and improving the definition of domain-specific change patterns. Key words: pattern-based ontology evolution, ontology change opera-tors, layered change logs