We derive a structural model of firm behavior that is composed of the Generalized Quadratic Almost Ideal Demand System to represent both consumers' milk preferences and firm profit maximization conditions that allow for a range of competitive scenarios. The importance of this specification is...

We undertake a range of tests for structural food preference change in urban China, using provincial-level panel data from 2002 to 2010. We introduce a time transition function into the Generalized Quadratic Almost Ideal Demand System (GQAIDS) to represent consumer preferences. We apply this...