Jiaqi (Joseph) Xu

Jiaqi (Joseph) Xu
  • Doctoral Candidate

Contact Information

  • office Address:

    533.3 Jon M. Huntsman Hall
    Philadelphia,

Research Interests: empirical operations management, online retailing, revenue management and pricing

Overview

Joseph Xu is a fourth year doctoral student in the operations management track. His research interests are empirical operations management, online retail operations, and revenue management.

Joseph graduated from Cornell University with a B.Sc. in Operations Research in 2010. Before coming to Wharton, he worked as an algorithmic trader at Archelon Deutschland GmbH.

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Research

Marshall Fisher, Santiago Gallino, Joseph Xu. The Value of Rapid Delivery in Online Retailing. (Working)
Gerard Cachon, Santiago Gallino, Joseph XuMaximizing Profitability in Online Retail through Free Shipping Threshold Policy: A Model and Evidence (Working)
Peter Fader, Senthil Veeraraghavan, Joseph Xu. The Evaluation of Dynamic Pricing Policies in a Quasi-Experimental Setting. (Working)
  • Marshall L. Fisher, Santiago Gallino, Jiaqi (Joseph) Xu (2019), The Value of Rapid Delivery in Omnichannel Retailing, Journal of Marketing Research. Abstract

    The authors study how faster delivery in the online channel affects sales within and across channels in omnichannel retailing. The authors leverage a quasi-experiment involving the opening of a new distribution center by a U.S. apparel retailer, which resulted in unannounced faster deliveries to western states through its online channel. Using a difference-in-differences approach, the authors show that online store sales increased on average by 1.45% per business day reduction in delivery time, from a baseline of seven business days. The authors also find a positive spillover effect to the retailer’s offline stores. These effects increase gradually in the short to medium term as the result of higher order count. The authors identify two main drivers of the observed effect: customer learning through service interactions with the retailer, and existing brand presence in terms of online store penetration rate and offline store presence. Customers with less online store experience are more responsive to faster deliveries in the short term, while experienced online store customers are more responsive in the long term.

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  • Gérard Cachon, Santiago Gallino, Jiaqi (Joseph) Xu, Free Shipping Is Not Free: A Data-Driven Model to Design Free-Shipping Threshold Policies. Abstract

    Online retailers often offer free shipping threshold policies: customers who purchase more than a threshold amount are not charged an additional fee for shipping. This paper provides a data-driven analytical model to (i) assess the profitability of a retailer’s current shipping threshold policy and (ii) identify the best freeshipping threshold policy for a retailer. The model is estimated from actual transaction and product return data. The model explicitly accounts for changes in customer shopping behavior due to a free shipping threshold, including strategically adding items to a shopping basket to receive free shipping, which we call orderpadding, and the subsequent adjustment in product return decisions. Roughly speaking, according to our model, a retailer that offers a free shipping threshold policy should set the threshold slightly abovethe average shopping basket amount. We calibrate our model to data from an online apparel retailer and determine that its decision to offer a lower free shipping threshold reduced its profitability considerably.This result is robust to a number of assumptions regarding the impact on long-run sales and possible price adjustments. We conclude that free shipping threshold policies are profitable only under a limited set of restrictive conditions.

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Teaching

Teaching Assistant

  • Managing the Productive Core of the Firm: Operations Strategy. Fall 2015.
  • Managing the Productive Core of the Firm: Operations Strategy (Executive MBA). Spring 2015, Spring 2014.
  • Mathematical Modeling and Its Application in Finance. Spring 2015, Spring 2014, Spring 2013.
  • Retail Supply Chain Management. Spring 2014, Spring 2013.
  • Global Supply Chain Management. Fall 2014, Fall 2013.
  • Managing the Productive Core of the Firm: Quality and Productivity (Executive MBA). Fall 2013.