Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/86030
Authors: 
van Oest, Rutger
Franses, Philip Hans
Year of Publication: 
2003
Series/Report no.: 
Tinbergen Institute Discussion Paper 03-079/4
Abstract: 
Market share models for weekly store-level data are useful to understand competitive structures by delivering own and cross price elasticities. These models can however not be used to examine which brands lose share to which brands during a specificperiod of time. It is for this purpose that we propose a new model, which does allow for such an examination. We illustrate the model for two product categories in two markets, and we show that our model has validity in terms of both in-sample fit and out-of-sample forecasting. We also demonstrate how our model can be used to decompose own and cross price elasticities to get additional insights into the competitive structure.
Subjects: 
competitive structure
elasticity decomposition
market shares
share-switching
store-level scanner data
JEL: 
C10
C51
C53
M31
Document Type: 
Working Paper

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