ديدگاه سيستمي در الگوسازي ديناميك از اقتصاد: نقش و مفهوم عرض از مبدا

System Approach to the Modelling of Economics Dynamics: The Concept of the Intercept and its Role in the Model

In many of econometric models, the coefficient of the intercept term appears insignificant. Based on a system approach to the modelling of economic systems, this paper discusses what actually the term of intercept stands for, and which role it can play truely. It is shown that according to the system dynamics, mostly the term could not have any meaning, and therefore, can not be logically included in the model. A few locations that it may be estimated significantly are listed. These include: data for the operating point of a short-run linearised model (equilibrium), a missed input signal (exogenous variable), or a bias term in the model error (uncertainty). The discussion is fulfilled by representing a real model for aggregate consumption in Iran.