关键词: 可支配收入, 消费支出, 灰色系统建模, 分层关系研究

Abstract: This paper analyzes the change regulation of grey marginal propensity to consumption of different income groups by establishing the relationship GM(0,2)group between the different income levels and corresponding consumer spending. Further analysis of the driving action of disposable income on consumer spending and study of the relational system coordination between disposable income and consumer spending are illustrated through modeling GM(1,2). Through the comparison among the parameters of the models between income and spending in different periods, the dynamic changes of marginal propensity to consumption within the income groups of different levels is discussed, and the limitation of the model research is effectively improved.

Key words: disposable income, consumer spending, gray system modeling, research of hierarchical relationships