Abstract: Based on the idea of recombination of evolution computing theory, we proposed an exception handling method of an Agent system based on norm improvement to deal with the exceptions that violated execution norms in Agent system. The proposed method could analyze the reason for a norm exception based on the mutual triggering and execution information among norms, recombine the norms that were in the exception state, and improve the norm to make it more adaptable to the environment. The experimental results show that the method can deal with the exception state of the norm, enhance the triggering condition of norms, ensure that the norm meet the expected postcondition, and improve the ability of exception handling of Agent system in an open environment.

Key words: Agent system, norm, evolution computing, exception