abstract:The Almost Ideal Demand System (AIDS) (1980) is a consumer demand model used primarily by economists to study consumer behavior. The AIDS model gives an arbitrary first-order approximation to any demand system and has many desirable qualities of demand systems.
TheinventionofPCAIDS (ProportionalityCalibratedAlmostIdealDemandSystem) by Roy Epstein and Dan Rubinfeldstandsat the forefront ofcurrentapplications of mergersimulation .