In this paper we consider empirical econometric models for nine brands of a fast-moving nondurable consumer product using weekly observed scanning data on market share and distribution conditional on advertising, price, promotion activities. Since the data show nonstationary characteristics, we...

We introduce a new method, called "customer oriented finite perturbation analysis" (CFPA), for sensitivity estimation for discrete event dynamic systems (DEDS). We discuss the CFPA algorithm and applying a new proof technique we obtain necessary conditions for CFPA to yield an unbiased estimator...