This paper shows that there exists a relatively simple demand model that is consistent with utility maximization, and has nested within it both the almost ideal demand system and translog models. This model is exactly aggregated, then estimated using aggregate U.S. demand data. The results are...

Let "y" be a vector of endogenous variables and let "w" be a vector of covariates, parameters, and errors or unobservables that together are assumed to determine "y". A structural model <formula format="inline"> <simplemath>"y"&equals;"H"("y", "w") </simplemath> </formula> is complete and coherent if it has a well-defined reduced form, meaning that for any...

Fractional demand systems are utility derived demands having quantities or budget shares proportional to ag + bf, where g and f are functions of income and a and b vary across goods and are functions of prices. Many known demand systems that have large regular regions are fractional. This paper...