¹University of Pécs, Pécs, Hungary

Correspondence: S Jenei, Institute of Mathematics and Informatics, University of Pécs, Pécs, Hungary, Ifjúság u.6, H-7624, Pécs, Hungary. E-mail: jenei@ttk.pte.hu

Received April 1999; Accepted January 2001.

Abstract

A new approach for knowledge representation and inference is introduced and discussed in this paper which is applicable to a wide range of daily problems—practically for all the problems, where some 'strategy' for fault search and rectification is provided by an expert. The system is efficient even if this 'strategy'—that is, the general understanding of the actual problem—is weak. The theory finds its application in the ADAC project, corresponding to a problem raised by Circuit Foil, Luxembourg, a leader in the copper foil industry.