I wish to congratulate the authors on their comparison of the newly proposed generalized multinomial logit (GMNL) of Fiebig et al. [1], henceforth ‘FKLW,’ with the widely-used, latent class or finite mixture model of Kamakura and Russell [2]. Both models use the same logistic regression likelihood for product choice but differ in their distributions for individual parameter heterogeneity. I am ...

We propose an estimator for discrete choice models, such as the logit, with a nonparametric distribution of random coefficients. The estimator, based on linear regression subject to linear inequality constraints, is robust, simple to program, and quick to compute compared to alternative estimators for mixture models. We discuss three methods for proving identification of the distribution of het...

We propose an estimator for discrete choice models, such as the logit, with a nonparametric distribution of random coe¢ cients. The estimator is linear regression subject to linear inequality constraints and is robust, simple to program and quick to compute compared to alternative estimators for mixture models. We discuss three methods for proving identi…cation of the distribution of heterogene...

Dynamic traffic assignment (DTA) models can be realized with vehicle-based simulation approach or flow-based analytical approach. Depending on methodology, the flow-based analytical models can be further classified into mathematical programming, optimal control and variational inequality models. A brief review of the development of analytical models is given in this paper. A stochastic dynamic ...

Thresholds defined on the level and change in the HHI (HerfindahlHirschmann Index) applied to market shares seem to be the main instrument to select notified mergers for investigation in both the EU and US. We question the use of such a selection rule in differentiated products industries. We propose the use of a structural approach to apply HHI thresholds based on profit shares rather than mar...

BACKGROUND Utilization of specialty care may not be a discrete, isolated behavior but rather, a behavior of sequential movements within the health care system. Although patients may often visit their primary care physician and receive a referral before utilizing specialty care, prior studies have underestimated the importance of accounting for these sequential movements. METHODS The sample in...

This paper studies a Stated Preference (SP) experiment on the choice of type of (Rail) season card, conducted among current Dutch Railways season cardholders. They were asked to choose from the following three alternatives: (1) an unrestricted season card, (2) a cheaper season card with peak travel and travel frequency restrictions, and (3) not buying a season card. Multinomial logit (MNL), nes...