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      • Faculty Publications  (90)

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      • 2022
      • Working Paper

      Small Campaign Donors

      By: Laurent Bouton, Julia Cagé, Edgard Dewitte and Vincent Pons
      In this paper, we study the characteristics and behavior of small donors, and compare them to those of large donors. We first build a novel dataset including all the 340 million individual contributions reported to the U.S. Federal Election Commission between 2005 and...  View Details
      Keywords: Campaign Finance; Campaign Contributions; Small Donations; ActBlue; WinRed; TV Advertising; Political Elections; Finance; Demographics; Advertising; Analysis
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      Bouton, Laurent, Julia Cagé, Edgard Dewitte, and Vincent Pons. "Small Campaign Donors." NBER Working Paper Series, No. 30050, May 2022.
      • 2022
      • Working Paper

      Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers

      By: Magie Cheng and Shunyuan Zhang
      The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on an influencer’s reputation. We collect a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in...  View Details
      Keywords: Influencer Marketing; Social Influencers; Brand; Sponsorship; Video Analytics; Marketing; Brands and Branding; Media; Reputation
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      Cheng, Magie, and Shunyuan Zhang. "Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers." Harvard Business School Working Paper, No. 22-067, April 2022.
      • February 18, 2022
      • Article

      Transparency as a Solution for COVID-19 Related Hospital Capacity Issues

      By: Regina E. Herzlinger and Richard Boxer
      In the initial phases of the COVID-19 pandemic, many U.S. hospitals could not provide an adequate supply of beds to meet demand. Solving the problem of hospital bed capacity is of great importance in the “new normal,” which requires recognizing that SARS-CoV-2 is but...  View Details
      Keywords: COVID; COVID-19 Pandemic; Health Care; Health Care Demand; Health Care Delivery; Health Care Industry; Health Care Operations; Health Care Policy; Transparency; Hospital; Hospital Management; Hospitals; Health Pandemics; Health Care and Treatment; Service Delivery; Operations; Performance Capacity; Policy; Health Industry
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      Herzlinger, Regina E., and Richard Boxer. "Transparency as a Solution for COVID-19 Related Hospital Capacity Issues." Health Affairs Forefront (February 18, 2022).
      • Article

      A Prescriptive Analytics Framework for Optimal Policy Deployment Using Heterogeneous Treatment Effects

      By: Edward McFowland III, Sandeep Gangarapu, Ravi Bapna and Tianshu Sun
      We define a prescriptive analytics framework that addresses the needs of a constrained decision-maker facing, ex ante, unknown costs and benefits of multiple policy levers. The framework is general in nature and can be deployed in any utility maximizing context, public...  View Details
      Keywords: Prescriptive Analytics; Heterogeneous Treatment Effects; Optimization; Observed Rank Utility Condition (OUR); Between-treatment Heterogeneity; Machine Learning; Decision Making; Analysis; Mathematical Methods
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      McFowland III, Edward, Sandeep Gangarapu, Ravi Bapna, and Tianshu Sun. "A Prescriptive Analytics Framework for Optimal Policy Deployment Using Heterogeneous Treatment Effects." MIS Quarterly 45, no. 4 (December 2021): 1807–1832.
      • Winter 2021
      • Article

      Mobile Internet Usage and Usage-based Pricing

      By: Jeffrey Prince and Shane Greenstein
      Using data on mobile Internet usage of thousands of individuals, we provide some of the first analyses linking mobile usage to key demographics such as income. We find a reverse-U relationship between mobile Internet usage and income—notably different than the...  View Details
      Keywords: Mobile Internet Usage; Pricing Strategy; Internet and the Web; Mobile and Wireless Technology; Demographics; Income; Price; Strategy
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      Prince, Jeffrey, and Shane Greenstein. "Mobile Internet Usage and Usage-based Pricing." Journal of Economics & Management Strategy 30, no. 4 (Winter 2021): 760–783.
      • November 2021
      • Article

      The Comprehensive Effects of Sales Force Management: A Dynamic Structural Analysis of Selection, Compensation, and Training

      By: Doug J. Chung, Byungyeon Kim and Byoung G. Park
      This study provides a comprehensive model of an agent’s behavior in response to multiple sales management instruments, including compensation, recruiting/termination, and training. The model on agents’ behavior takes into account many of the key elements that...  View Details
      Keywords: Salesforce Management; Recruitment; Selection and Staffing; Compensation and Benefits; Resignation and Termination; Training; Behavior; Analysis
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      Chung, Doug J., Byungyeon Kim, and Byoung G. Park. "The Comprehensive Effects of Sales Force Management: A Dynamic Structural Analysis of Selection, Compensation, and Training." Management Science 67, no. 11 (November 2021): 7046–7074.
      • Article

      Biosimilars and Follow-On Products in the United States: Adoption, Prices, and Users

      By: Ariel Dora Stern, Jacqueline L. Chen, Melissa Ouellet, Mark R. Trusheim, Zeid El-Kilani, Amber Jessup and Ernst R. Berndt
      Biologic drugs account for a disproportionate share of the increase in pharmaceutical spending in the U.S. and worldwide. Against this backdrop, many look to the expanding market for biosimilars—follow-on products to biologic drugs—as a vehicle for controlling...  View Details
      Keywords: Pharmaceuticals; Drug Spending; Drug Pricing; Health Care and Treatment; Spending; Price; Markets; Cost Management; United States
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      Stern, Ariel Dora, Jacqueline L. Chen, Melissa Ouellet, Mark R. Trusheim, Zeid El-Kilani, Amber Jessup, and Ernst R. Berndt. "Biosimilars and Follow-On Products in the United States: Adoption, Prices, and Users." Health Affairs 40, no. 6 (June 2021).
      • 2021
      • Working Paper

      The Great Unequalizer: Initial Health Effects of COVID-19 in the United States

      By: Marcella Alsan, Amitabh Chandra and Kosali I. Simon
      We measure inequities from the COVID-19 pandemic on mortality and hospitalizations in the United States during the early months of the outbreak. We discuss challenges in measuring health outcomes and health inequality, some of which are specific to COVID-19 and others...  View Details
      Keywords: COVID-19; Health Inequality; Health Pandemics; Demographics; Equality and Inequality
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      Alsan, Marcella, Amitabh Chandra, and Kosali I. Simon. "The Great Unequalizer: Initial Health Effects of COVID-19 in the United States." NBER Working Paper Series, No. 28958, June 2021.
      • Article

      Use of Connected Digital Products in Clinical Research Following the COVID-19 Pandemic: A Comprehensive Analysis of Clinical Trials

      By: Caroline Marra, William J. Gordon and Ariel Dora Stern
      Objectives: In an effort to mitigate COVID-19 related challenges for clinical research, the U.S. Food and Drug Administration (FDA) issued new guidance for the conduct of ‘virtual’ clinical trials in late March 2020. This study documents trends in the use of...  View Details
      Keywords: Connected Digital Products; Telehealth; Remote Monitoring; Health Testing and Trials; Research; Governing Rules, Regulations, and Reforms; Technology
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      Marra, Caroline, William J. Gordon, and Ariel Dora Stern. "Use of Connected Digital Products in Clinical Research Following the COVID-19 Pandemic: A Comprehensive Analysis of Clinical Trials." BMJ Open 11, no. 6 (2021).
      • April 2021
      • Supplement

      Buy Online, Pickup in Store: CEO Supplement

      By: Antonio Moreno, Santiago Gallino and Amy Klopfenstein
      In April 2019, Sylvarella CEO Sylvia Coparella must assess the impact of the company’s Buy Online, Pickup in Store (BOPS) program on her company’s overall sales. To do so, she must review analyses of both e-commerce and brick-and-mortar sales data and compare the...  View Details
      Keywords: Operations; Service Delivery; Logistics; Infrastructure; Distribution Channels; Order Taking and Fulfillment; Analysis; Retail Industry; Apparel and Accessories Industry; United States; Canada
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      Moreno, Antonio, Santiago Gallino, and Amy Klopfenstein. "Buy Online, Pickup in Store: CEO Supplement." Harvard Business School Supplement 621-104, April 2021.
      • March 17, 2021
      • Other Article

      Beyond Pajamas: Sizing Up the Pandemic Shopper

      By: Ayelet Israeli, Eva Ascarza and Laura Castrillo
      A first look at how the COVID-19 pandemic impacted e-commerce apparel shopping in the US and the UK. Extensive analysis and interactive graphics utilizing millions of transactions.
      While the pandemic is still playing out, our preliminary investigations suggests...  View Details
      Keywords: Retail; Retail Analytics; Consumer; Pandemic; COVID; COVID-19; Apparel; Ecommerce; E-commerce; Online Shopping; Online Apparel; Online Sales; Returns; CRM; Customer Retention; Customer Experience; Customer Value; Digital; Customer Focus and Relationships; Customers; Health Pandemics; Consumer Behavior; Customer Relationship Management; Internet and the Web; Behavior; Retail Industry; Apparel and Accessories Industry; Technology Industry; United States; United Kingdom
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      Israeli, Ayelet, Eva Ascarza, and Laura Castrillo. "Beyond Pajamas: Sizing Up the Pandemic Shopper." Harvard Business School Working Knowledge (March 17, 2021).
      • December 2020
      • Article

      Different Founders, Different Firms: A Comparative Analysis of Academic and Non-academic Startups

      By: Maria P. Roche, Annamaria Conti and Frank T. Rothaermel
      What role do differences in founders' occupational backgrounds play in new venture performance? Analyzing a novel dataset of 2,998 founders creating 1,723 innovative startups in biomedicine, we find that the likelihood and hazard of achieving a liquidity event are...  View Details
      Keywords: Founders; Innovation; Occupational Imprinting; Academic Startups; Non-academic Startups; Founder Heterogeneity; Business Startups; Innovation and Invention; Performance; Demographics; Analysis
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      Roche, Maria P., Annamaria Conti, and Frank T. Rothaermel. "Different Founders, Different Firms: A Comparative Analysis of Academic and Non-academic Startups." Special Issue on Innovative Start-Ups and Policy Initiatives. Research Policy 49, no. 10 (December 2020).
      • 2020
      • Working Paper

      Where the Cloud Rests: The Economic Geography of Data Centers

      By: Shane Greenstein and Tommy Pan Fang
      This study provides an analysis of the entry strategies of third-party data centers in the United States, an industry with assets worth hundreds of billions of dollars. We examine the market in 2018 and 2019, and compare with the physical entry of private data centers...  View Details
      Keywords: Data Centers; Cloud Services; Information Technology; Market Entry and Exit; Strategy; Geographic Location
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      Greenstein, Shane, and Tommy Pan Fang. "Where the Cloud Rests: The Economic Geography of Data Centers." Harvard Business School Working Paper, No. 21-042, September 2020.
      • August 2020
      • Technical Note

      Comparing Two Groups: Sampling and t-Testing

      By: Iavor I Bojinov, Chiara Farronato, Yael Grushka-Cockayne, Willy C. Shih and Michael W. Toffel
      This note describes sampling and t-tests, two fundamental statistical concepts.  View Details
      Keywords: Statistics; Econometric Analyses; Experimental Methods; Data Analysis; Data Analytics; Analytics and Data Science; Analysis; Surveys; Mathematical Methods
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      Bojinov, Iavor I., Chiara Farronato, Yael Grushka-Cockayne, Willy C. Shih, and Michael W. Toffel. "Comparing Two Groups: Sampling and t-Testing." Harvard Business School Technical Note 621-044, August 2020.
      • August 2020 (Revised June 2021)
      • Case

      Just Arrived: Integrating Refugees in Sweden

      By: Brian Trelstad, Emilie Billaud and Mette Fuglsang Hjortshoej
      Just Arrived is an online platform that matches newly-arrived immigrants in Sweden with employment opportunities. As one of several for-profit and non-profit start-ups in Europe that is looking to address the refugee crisis, the case enables a comparative analysis of...  View Details
      Keywords: Immigration; Refugees; Employment; Integration; Business Model; Social Entrepreneurship; Growth and Development Strategy; Employment Industry; Sweden; Italy; Germany
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      Trelstad, Brian, Emilie Billaud, and Mette Fuglsang Hjortshoej. "Just Arrived: Integrating Refugees in Sweden." Harvard Business School Case 321-040, August 2020. (Revised June 2021.)
      • Article

      Oracle Efficient Private Non-Convex Optimization

      By: Seth Neel, Aaron Leon Roth, Giuseppe Vietri and Zhiwei Steven Wu
      One of the most effective algorithms for differentially private learning and optimization is objective perturbation. This technique augments a given optimization problem (e.g. deriving from an ERM problem) with a random linear term, and then exactly solves it....  View Details
      Keywords: Machine Learning; Algorithms; Objective Perturbation; Mathematical Methods
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      Neel, Seth, Aaron Leon Roth, Giuseppe Vietri, and Zhiwei Steven Wu. "Oracle Efficient Private Non-Convex Optimization." Proceedings of the International Conference on Machine Learning (ICML) 37th (2020).
      • 2020
      • Article

      Inconvenient Truths: Interpreting the Origins of the Internet

      By: Shane Greenstein
      A conventional economic narrative provides intellectual underpinnings for governments to subsidize research and development ("R&D") that coordinates risky research to benefit many in society. This essay compares this narrative with the origins and invention of the...  View Details
      Keywords: Lead Users; Technology Transfer; Internet and the Web; History; Analysis; Research and Development; Governance; Information Technology; Policy
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      Greenstein, Shane. "Inconvenient Truths: Interpreting the Origins of the Internet." Journal of Law & Innovation 3 (2020): 36–68.
      • May 2020
      • Article

      Inventory Auditing and Replenishment Using Point-of-Sales Data

      By: Achal Bassamboo, Antonio Moreno and Ioannis Stamatopoulos
      Spoilage, expiration, damage due to employee/customer handling, employee theft, and customer shoplifting usually are not reflected in inventory records. As a result, records often report phantom inventory, i.e., units of good not available for sale. We derive an...  View Details
      Keywords: Shelf Availability; Inventory Record Inaccuracy; Optimal Replenishment; Retail Analytics; Performance Effectiveness; Analysis; Mathematical Methods
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      Bassamboo, Achal, Antonio Moreno, and Ioannis Stamatopoulos. "Inventory Auditing and Replenishment Using Point-of-Sales Data." Production and Operations Management 29, no. 5 (May 2020): 1219–1231.
      • 2020
      • Chapter

      Reflections on Comparing China and India

      By: Tarun Khanna
      In this essay, the introductory chapter to an edited volume (Bajpai, Ho and Miller (edited), Routledge Handbook of China-India Relations, 2020), I reflect on two decades of my comparative scholarship on the trajectories of modern China and India, with a lens...  View Details
      Keywords: Country Analysis; Comparative Analysis; International Relations; Entrepreneurship; China; India
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      Khanna, Tarun. "Reflections on Comparing China and India." Chap. 1 in Routledge Handbook of China–India Relations, edited by Kanti Bajpai, Selina Ho, and Manjari Chatterjee Miller, 18–32. New York: Routledge, 2020.
      • Mar 2020
      • Conference Presentation

      A New Analysis of Differential Privacy's Generalization Guarantees

      By: Christopher Jung, Katrina Ligett, Seth Neel, Aaron Roth, Saeed Sharifi-Malvajerdi and Moshe Shenfeld
      We give a new proof of the "transfer theorem" underlying adaptive data analysis: that any mechanism for answering adaptively chosen statistical queries that is differentially private and sample-accurate is also accurate out-of-sample. Our new proof is elementary and...  View Details
      Keywords: Machine Learning; Transfer Theorem; Mathematical Methods
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      Jung, Christopher, Katrina Ligett, Seth Neel, Aaron Roth, Saeed Sharifi-Malvajerdi, and Moshe Shenfeld. "A New Analysis of Differential Privacy's Generalization Guarantees." Paper presented at the 11th Innovations in Theoretical Computer Science Conference, Seattle, March 2020.
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