Deriving a Flexible Mixed Demand System: The Normalized Quadratic Model
提出一种局部灵活且理论一致的混合需求函数系统，通过受限支出函数的新归一化二次参数化方法实现，并以意大利蔬菜需求的九商品模型为例进行说明。
Abstract This article deals with the specification of a locally flexible and theory‐consistent system of mixed demand functions, a framework that allows for a rich set of possibilities about what is assumed as exogenous in a demand model. A coherent mixed demand system is derived by using the restricted expenditure function typically studied in the related area of rationed demands. The method is implemented by a new normalized quadratic (NQ) parameterization of the restricted expenditure function. The resulting NQ mixed demand system is illustrated with an application to a nine‐good model of the Italian demand for vegetables.