Customers can access hundreds of reviews for a single product in online marketplaces.
Buyers often use reviews from other customers that share their type---such as height for …

This paper studies product ranking mechanisms of a monopolistic online platform in the
presence of social learning. The products' quality is initially unknown, but consumers can …

Decision making in modern stochastic systems, including e-commerce platforms, financial
markets, and healthcare systems, has evolved into a multifaceted process that involves …

This paper introduces the importance of the real-world relevant issues of the electrical power
market regarding 2× 2 strategic games, which have pointed out the optimization of the facing …

We study social learning through reviews in a market with horizontally and vertically
differentiated firms. Heterogeneous match qualities among consumers give rise to rich belief …

Product choice when consumers engage in social learning has significant implications on
learning outcomes and on the information accumulation rate. In many practical settings …

This thesis contains four chapters on liquidity, financial crisis, dynamic pricing and optimal
contracting with externalities. The first chapter studies how transparency (information …