Andrés Musalem, Eric T. Bradlow, and Jagmohan Raju, "Bayesian Estimation 
of Random-Coefficients Choice Models Using Aggregate Data", Journal of 
Applied Econometrics, Vol. 24, No. 3, 2009, pp. 490-516.

We use 104 weeks of data collected by Information Resources Inc. (IRI) for
the period spanning 08/30/1992 to 08/21/1994. These data are proprietary and
contain information on weekly volume sales, volume prices, and feature and
display activity for each UPC in the Buffalo InfoScan market in the product
category of facial tissue products. We use the first 52 weeks of data for
calibration, while the last 52 weeks are used for validation (hold-out
sample). Volume price (price) is measured in dollars per 20 units of facial
tissue. 

Andres Musalem
amusalem [AT] duke.edu