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The motivation for the work reported in this paper is the belief that not only is it bene"cial to reuse knowledge but it is essential if we wish to build knowledge-based systems (KBS) that meet the needs of users. The focus of most KBS research is on complex modelling at the knowledge level which requires a knowledge engineer to act as the intermediary between the expert and the system. The type of reuse primarily considered is the reuse of ontologies or problem-solving methods so that improvements can be made in system quality and development time. However, there is little focus on the needs of users to access the knowledge in a variety of ways according to the individual's decision style or situation. The system described in this paper seeks to support the user in a number of di!erent activities including knowledge acquisition, inferencing, maintenance, tutoring, critiquing, &&what-if '' analysis, explanation and modelling. The ability to ask di!erent types of questions and to explore the knowledge in alternative ways is a di!erent type of knowledge reuse. The knowledge acquisition and representation technique used as the foundation is known as ripple-down rules (RDR). To support

Author

DEBBIE RICHARDS

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 1071-5819)

Published

2000

Language

EN