This article presents estimates of the almost Ideal demand system (AIDS) for four food groups_and compares these estimates WI~h the AIDS' own linear approximate version and the linear expenditure system The AIDS IS indirectly nonadditive and has several desirable properties, making it a Viable...

A Comprehensive model of U S agriculture incorporates the spatial pattern of supply, resource use, and the technical structure of agricultural production that is generated by a linear programming component, and it utilizes detailed information on market structure, processes, and prices that is...

ERS provides economic information on the near-term agricultural outlook and on longrun projections. Here is an overview of efforts to improve such information through comprehensive quantitative models. The various models incorporate intercommodity relationships within agriculture, aggregate farm...