A System of Demand Equations Satisfying Effectively Global Regularity Conditions
提出一种间接效用函数的参数化形式，通过两个单位成本函数构造出“有效全局正则”的需求方程组，该正则区域覆盖样本及更高实际支出水平，并嵌套线性支出系统等常见模型，实证展示了其价值。
A parametric specification of an indirect utility function in terms of expenditure and two unit cost functions.is.proposed. Specification of these unit cost functions in terms of regular functions leads to the notion of an "effectively globally regular" system of demand equations; that is, a system of demand equations that is regular over a cone in expenditure-price space, and for which the regular region includes all points in any given sample, and all values of nominal expenditure and prices generating higher values of real expenditure than the sample minimum. This general model nests a number of popular demand systems, such as the Linear Expenditure System, as special cases. An empirical application demonstrates the value of the generalization.