Case-Based Quality Management System Using Expectation Values

Authors:
Hirokazu Taki;Satoshi Horie;Norihiro Abe
Affiliations:
-;-;-
Venue:
ICCBR '99 Proceedings of the Third International Conference on Case-Based Reasoning and Development
Year:
1999

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Qualitative simulation

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Abstract

This paper describes a quality management system (called CBQM: Case-Based Quality Management) using the case-based resoning mechanism which is based on a cost expection value. We developed a quality management system that employs a stochastic method. However, in some cases, this stochastic-based system failed to select good cases. Therefore, we have integrated dome expectation values into the case selection mechanism. The CBQM has an expecation measurement. Its case selection criteria use not only simiarity, but also some expectation values. If unforeseen malfunctions may occur due to inappropriate design, manufacturing condition and/or unsuiteble usage, the similarity is not enough to select useful cases from a casebase. That is because the similatity is mainly based on products themselves. The CBQM adopts the cast expectation value in order to pick up useful cases. The CBQM's selection criteria is based on the quality of cases, which considers difficulty. We validated this system in real product repair problems which field service engineers repair home appliances.