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A Finite-Population Revenue Management Model and a Risk-Ratio Procedure for the Joint Estimation of Population Size and Parameters


Kalyan Talluri


Universitat Pompeu Fabra - Faculty of Economic and Business Sciences

February 2, 2009


Abstract:     
Many dynamic revenue management models divide the sale period into a finite number of periods T and assume, invoking a fine-enough grid of time, that each period sees at most one booking request. These Poisson-type assumptions restrict the variability of the demand in the model, but researchers and practitioners were willing to overlook this for the benefit of tractability of the models.

In this paper, we criticize this model from another angle. Estimating the discrete finite-period model poses problems of indeterminacy and non-robustness: Arbitrarily fixing T leads to arbitrary control values and on the other hand estimating T from data adds an additional layer of indeterminacy. To counter this, we first propose an alternate finite-population model that avoids this problem of fixing T and allows a wider range of demand distributions, while retaining the useful marginal-value properties of the finite-period model.

The finite-population model still requires jointly estimating market size and the parameters of the customer purchase model without observing no-purchases. Estimation of market-size when no-purchases are unobservable has rarely been attempted in the marketing or revenue management literature. Indeed, we point out that it is akin to the classical statistical problem of estimating the parameters of a binomial distribution with unknown population size and success probability, and hence likely to be challenging. However, when the purchase probabilities are given by a functional form such as a multinomial-logit model, we propose an estimation heuristic that exploits the specification of the functional form, the variety of the offer sets in a typical RM setting, and qualitative knowledge of arrival rates. Finally we perform simulations to show that the estimator is very promising in obtaining unbiased estimates of population size and the model parameters.

Number of Pages in PDF File: 22

Keywords: Revenue management, estimation, multi-nomial logit, risk-ratio

JEL Classification: C61, L93, L83, M11

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Date posted: April 8, 2009  

Suggested Citation

Talluri, Kalyan, A Finite-Population Revenue Management Model and a Risk-Ratio Procedure for the Joint Estimation of Population Size and Parameters (February 2, 2009). Available at SSRN: http://ssrn.com/abstract=1374853 or http://dx.doi.org/10.2139/ssrn.1374853

Contact Information

Kalyan Talluri (Contact Author)
Universitat Pompeu Fabra - Faculty of Economic and Business Sciences ( email )
Ramon Trias Fargas 25-27
Barcelona, 08005
Spain
(34) 93 542 17 50 (Phone)
(34) 93 542 17 46 (Fax)
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