摘要：Structural change in meat consumption has been the focus of many researchers during the lasttwo decades. In this paper we develop a dynamic linear Almost Ideal Demand System (AIDS)model from a cost function that allows for time varying parameters. This model is consistentwith inertia in the parameters of the cost and indirect utility functions. It allows for persistentpreferences which may arise from cultural biases, lifestyles, peer pressure, etc. An empiricalapplication is conducted with US meat consumption and price data using a generalized system offlexible least squares, Generalized Flexible Least Squares (GFLS). GFLS allows parameters toevolve slowly over time through incorporating of penalties in fluctuations. Estimated quarterlyelasticities were subjected to additional analysis to determine how highly they were related to theBrown and Schrader Cholesterol Index and relative prices. The combined results support thatthe movements of elasticities over time are related to both.
