commodities. Increasingly, separability has been utilized in conjunction with the AIDS to estimate conditional demand systems as … well as to improve upon precision of parameter estimates. The paper shows that separability conditions are inconsistent … with use of the AIDS and that tests of separability with the AIDS are problematic. …

The paper focuses on separability in the almost ideal demand system (AIDS) in time series analysis. The AIDS … illustrative purposes. A generalization to other types of separability is then considered. The model can be viewed as an extension …