Abstract

Although researchers have long stressed the importance of temporal properties in knowledge representation and reasoning, and a lot of temporal knowledge representation frameworks are proposed, few is carried out in practical use. In this paper, a new temporal production system, in which both rules and facts possess temporal attributes, is introduced. Production system is a knowledge representation mechanism used by most knowledge based systems and expert systems in practice. In this paper its definition and reasoning algorithm are presented, and a sample implementation in a salary system is given in the end.

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