Extracting Ontologies from Legacy Systems for Understanding and Re-Engineering

Authors:
Hongji Yang;Zhan Cui;Paul O'Brien
Affiliations:
-;-;-
Venue:
COMPSAC '99 23rd International Computer Software and Applications Conference
Year:
1999

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Abstract

Ontology has been investigated in the context of knowledge sharing among heterogeneous and disparate database and knowledge base systems. Our recent study and experiments suggest that ontology also have a great potential for legacy software understanding and re-engineering.In this paper we consider an ontology to be composed of four elements: classes, relations, functions and instances. We show these four elements forming an ontology for a legacy system can be extracted from the code of the concerned system using the existing software re-engineering tools. We then present our vision how the obtained ontology can be applied to understanding and eventually better re-engineering the legacy systems.