An Approach to Verifying Completeness and ... - Semantic Scholar
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system comprehensively spans the knowledge of a specialized domain. .... nary check on the knowledge base before the full reasoning mechanism is ...
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An Approach to Verifying Completeness and ... - Semantic Scholar
serve special functions. Some give a âdefinit,ionalâ value in the specified context. These are called znrtzal rules and. 18 THE AI MAGAZINE. Fall 1982 ...
An Approach to Verifying Completeness and Consistency in a Rule-Based Expert System Motoi
Suwa*
A. Carlisle Edward
Scott**
H. Shortliffe
Heurastac Programmzng ProJect Departments of Computer Sczence and Medrczne Stanford [Jnzverszty Stanford, Culzfornza 94305
Abstract, We describe a program for verifying that a set of rules in an expert system comprehensively spans the knowledge of a specialized domain. The program has been devised and tested within the context of the ONCOCIN System, a rule-based consultant for clinical oncology The ‘s I ules has allowed the automatic detecstylized format of ONCOCIN tion of a number of common errors as the knowledge base has been developed This capability suggests a general mechanism for correcting many problems with knowledge base completeness and consistency before they can cause pel fol mancc errors
THI? BUILDERS~FAKNOWI,EDGE-BASED cxpertsystern must ensure t,hat, t.he system will give its users accurate advice or correct solutions to t,heir problems. The process of verifying that a system is accurate and reliable has two distinct components: checking t,hat the knowledge base contains all necessary information and verifying that the program can interpret, and apply this information correctly. The first of This walk was supported in part by the National Library of Medicine (Program PI eject, Grant LM-~XSXY and Research career Development Award LM 00048) and the National Science Foundation (Grant MC% 7903753) It was callied out on the SUMEX-AIM computer facility (NIII grant. RI
