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Title: P-graph--A graph model for anomaly checking of knowledge bases
Authors: Lim, E.L.
McCallum, J. 
Chan, K.H.
Issue Date: 1990
Citation: Lim, E.L.,McCallum, J.,Chan, K.H. (1990). P-graph--A graph model for anomaly checking of knowledge bases : 871-877. ScholarBank@NUS Repository.
Abstract: The authors present a graph model, P-graph, which supports the checking of knowledge bases, for anomalies such as deadends, unreachability, cycles, inconsistency, redundancy, subsumption, and missing rules. P-graph captures the essential information needed for anomaly checks. The proposed approach differs from existing research as follows: (1) it checks on groups of problem instances rather than on individual problem instances; (2) it uses empirical knowledge to generate problem instances realizable in practice (only these problem instances need to be checked); and (3) it considers the fact base as part of the knowledge base to be checked.
ISBN: 0818620846
Appears in Collections:Staff Publications

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