Abstract: Inferring mechanism is one critical technique to simulate the thought of human being. This paper researches on the realization and application of case-based reasoning and provides an example. Introducing a fuzzy inference algorithm based on the fuzzy relationship metric, one model of case representation and fuzzy matching algorithm to realize the case-based reasoning is put forward. The application of fuzzy case-based reasoning in a GSM optimization expert system is analyzed.

Key words: fuzzy inferring, case-based reasoning, expert system