Working Papers

These papers are working drafts of research which often appear in final form in academic journals. The published versions may differ from the working versions provided here.

Narrow your results
Bar Light, Gabriel Weintraub
October 8, 2018

The standard solution concept for stochastic games is Markov perfect equilibrium (MPE); however, its computation becomes intractable as the number of players increases. Instead, we consider mean field equilibrium (MFE) that has been popularized in...

John R. Birge, Ozan Candogan, Hongfan Chen, Daniela Saban
September 30, 2018

Two salient features of most online platforms are that they do not dictate the transaction prices, and use commissions/subscriptions for extracting revenues. We consider a platform that charges commission rates and subscription fees to sellers...

Santiago Balseiro, Omar Besbes, Gabriel Weintraub
September 18, 2018

We study the dynamic mechanism design problem of a seller that repeatedly auctions independent items over a discrete time horizon to buyers that face a cumulative budget constraint. A driving motivation behind our model is...

Ruth Beer, Ignacio Rios, Daniela Saban
August 2018

Motivated by recent initiatives to increase transparency in procurement, we study the effects of disclosing information about previous purchases in a setting where an organization delegates its purchasing decisions to its employees. When employees can...

Paulo Somaini
July 30, 2018

Revise and Resubmit to Journal of Political Economy

This paper provides a positive identification result for procurement models with asymmetric bidders, statistically dependent private information, and interdependent costs. When bidders are risk neutral, the model’s payoff-relevant...

Dirk Bergemann, Francisco Castro, Gabriel Weintraub
June 13, 2018

We study the classic sequential screening problem in the presence of buyers’ ex-post participation constraints. A leading example is the online display advertising market, in which publishers frequently do not use up-front fees and instead...

Joann F. de Zegher, Dan A. Iancu, Erica Plambeck
June 2018

Millions of poor smallholder farmers produce global commodities, often through illegal deforestation. Multinational commodity buyers have committed to halt illegal deforestation and improve farmers’ livelihoods in their supply chains. We propose a profitable way to...

Kostas Bimpikis, Yiangos Papanastasiou
May 22, 2018

Crowd-sourced content in the form of online product reviews or recommendations is an integral feature of most Internet-based service platforms and marketplaces, including Yelp, TripAdvisor, Netflix, and Amazon. Customers may find such information useful when...

Kostas Bimpikis, Ozan Candogan, Daniela Saban
January 11, 2018

We explore spatial price discrimination in the context of a ride-sharing platform that serves a network of locations. Riders are heterogeneous in terms of their destination preferences and their willingness to pay for receiving service....

Georg Schorpp, Feryao Erhun, Hau L. Lee
January 2018

We study contracting for a three-tier supply chain consisting of a buyer, a supplier, and a sub-supplier where disruptions of random length occur at the sub-supplier. As is common in supply chains, the buyer has...

Yonatan Gur, Ahmadreza Momeni
2018

An agent facing sequential decisions that are characterized by partial feedback needs to strike a balance between maximizing immediate payoffs based on available information, and acquiring new information that may be essential for maximizing future...

Kostas Bimpikis, Wedad J. Elmaghraby, Ken Moon, Wenchang Zhang
2018

Platforms can obtain sizable returns by operationally managing their market thickness, i.e., the availability of supply-side inventory. Using data from a natural experiment on a major B2B auction platform specializing in the $424 billion secondary...

Omar Besbes, Yonatan Gur, Assaf Zeevi
2018

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...

Kostas Bimpikis, Ozan Candogan, Shayan Ehsani
2018

This paper studies multi-tier supply chain networks in the presence of disruption risk. Firms decide how to source their inputs from upstream suppliers so as to maximize their expected profits, and prices of intermediate goods...

Benjamin Hébert
December 29, 2017

Regulations on financial intermediaries can create apparent arbitrage opportunities. Intermediaries are unable to fully exploit these opportunities due to regulation, and other agents are unable to exploit them at all due to limited participation. Does...

Basak Kalkanci, Erica Plambeck
October 31, 2017

This paper contributes to a recent thrust in the OM literature on how various sorts of transparency influence social and environmental responsibility in a supply chain. In practice, companies are under pressure to publish their...

Li Chen, Yao Cui, Hau L. Lee
September 8, 2017

Given the promise of 3D printing, also known as additive manufacturing, some innovative consumer goods companies have started to experiment with such a technology for on-demand production. However, the potential impact of 3D printing on...

David J. Lowsky, Donald K.K. Lee, Stefanos Zenios
July 16, 2017

A Health Savings Account (HSA) is a tax-advantaged savings account available only to households with high-deductible health insurance. This paper provides initial answers to two questions related to HSAs: 1) How should a household determine...

Susan Athey, Stefan Wager
July 10, 2017

Many scientific and engineering challenges – ranging from personalized medicine to customized marketing recommendations – require an understanding of treatment effect heterogeneity. In this paper, we develop a non-parametric causal forest for estimating heterogeneous treatment...

Susan Athey, Stefan Wager, Julie Tibshirani
July 6, 2017

We propose generalized random forests, a method for non-parametric statistical estimation based on random forests (Breiman, 2001) that can be used to fit any quantity of interest identified as the solution to a set of...