We develop and implement a Bayesian Semi-parametric model of demand under inter-product competition that enables us to assess the respective contributions of branding hierarchy and inter-product similarity to explaining and predicting demand. To incorporate branding hierarchy effects, we use...

This research uses P&G's value pricing initiative as a context for testing the ability of a normative economic model to predict competitor and retailer response. We first estimate the response parameters of a demand function for each brand from the period before value pricing was initiated. We...