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Intellektik: Technical report 95-02

A Hybrid Fuzzy-Neural Expert System for Diagnosis

Christoph S. Herrmann

Fuzzy Logic, a neural network and an expert system are combine d to build a hybrid diagnosis system. With this system we introduce a new approach to the acquisition of knowledge bases. Our system consists of a fuzzy expert system with a dual source knowledge base. Two sets of rules are acquired, inductively from given examples and deductively formulated by a physician. A fuzzy neural network serves to learn from sample data and allows to extract fuzzy rules for the knowledge base. The diagnosis of electroencephalograms by interpretation of graphoelements serves as visualization for our approach. Preliminary results demonstrate the promising possibilities offered by our method.

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