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This paper proposes and illustrates an object-oriented, knowledge-based approach to formulate Applied General Equilibrium (AGE) models. In this framework, an AGE model is viewed as a collection of structured objects from the real world such as economic agents and prices. A frame representation of major objects in AGE models for world trade is presented. This representation can be used as the structure of a model base in a loosely coupled intelligent modeling system. In such a system,doi:10.1016/0165-1889(94)00849-3 fatcat:32kgj76c7jfbxberp7a5ekjble