Although typically overlooked, many purchase datasets exhibit a high incidence of products with zero sales. We propose a new estimator for the Random-Coefficients Logit demand system for purchase datasets with zero-valued market shares. The identification of the demand parameters is based on a...

We propose a cross-nested logit (CNL) approach to address the question of how people revise their migration decisions when facing changes in the global environment. Compared with the popular logit model, the CNL allows for more sophisticated substitution patterns between destinations. Using...

We consider dynamic assortment optimization with incomplete information under the uncapacitated multinomial logit choice model. We propose an anytime stochastic approximation policy and prove that the regret - the cumulative expected revenue loss caused by offering suboptimal assortments - after...

Using data from three waves of Add Health we find that being very attractive reduces a young adult's (ages 18-26) propensity for criminal activity and being unattractive increases it for a number of crimes, ranging from burglary to selling drugs. A variety of tests demonstrate that this result...