This paper investigates the problem of information sharing between a retailer and a manufacturer in a supply chain. We develop a stylized model where a salient feature is that the product's quality is unknown but customers can infer it using a quality signal from customer-generated reviews. The...

We consider an ordinal optimization problem, where a decision maker learns the statistical characteristics of a number of systems using sequential sampling in order to ultimately determine the "best" one (with high probability). In so doing, the decision maker postulates a parametric model which...

In a multi-armed bandit (MAB) problem a gambler needs to choose at each round of play one of K arms, each characterized by an unknown reward distribution. Reward realizations are only observed when an arm is selected, and the gambler's objective is to maximize cumulative expected earnings over...