Conflict resolution strategy of inference engine of expert system is examined and a new method to carry out the resolution efficiently is proposed. In order to deal with the dilemma of choosing among qualified rules, we design a secondary inference engine for the major one which can provide rules to resolve conflicts among competing candidates. The experiment results verify the validity of this method and show that it can proceed to an optimal solution accurately and effectively under given conditions. Meanwhile this method has strong applicability and generality and it can be easily implanted into variety kinds of expert system.
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