Publications
Publications
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- All HBS Web
(861)
- Faculty Publications (175)
- August 2019
- Case
Twiggle: E-commerce with Semantic Search
By: Shane Greenstein and Danielle Golan
Four years after being founded, in 2014, by former Google executives Amir Konigsberg (CEO) and Adi Avidor (CTO), Twiggle had developed a search enhancement that plugged into an online merchant’s existing framework. The company utilized advanced structuring and... View Details
- August 2019
- Article
When and How to Diversify—A Multicategory Utility Model for Personalized Content Recommendation
By: Yicheng Song, Nachiketa Sahoo and Elie Ofek
Sometimes we desire change, a break from the same or an opportunity to fulfill different aspects of our needs. Noting that consumers seek variety, several approaches have been developed to diversify items recommended by personalized recommender systems. However,... View Details
- 2020
- Working Paper
To Infinity and Beyond: Scaling Economic Theories via Logical Compactness
By: Yannai A. Gonczarowski, Scott Duke Kominers and Ran I. Shorrer
Many economic-theoretic models incorporate finiteness assumptions that, while introduced for simplicity, play a real role in the analysis. Such assumptions introduce a conceptual problem, as results that rely on finiteness are often implicitly nonrobust; for example,... View Details
- January 2019 (Revised December 2019)
- Case
CrossBoundary Energy
By: John Macomber
Almost 500 million people are without electricity in sub-Saharan Africa. Governments and public utilities are challenged to bring generation and distribution to most of them. Considerable promise exists in “off-grid” or “mini-grid” technologies, notably using renewable... View Details
Keywords: Energy Investing; Economic Development; Renewable Energy; Business Growth and Maturation; Developing Countries and Economies; Project Finance; Emerging Markets; Industry Structures; Infrastructure; Segmentation; Private Equity; Decision Choices and Conditions; Energy Industry; Utilities Industry; Africa; Tanzania; Ghana
- 2019
- Working Paper
The Impact of Increasing Search Frictions on Online Shopping Behavior: Evidence from a Field Experiment
By: Donald Ngwe, Kris J. Ferreira and Thales Teixeira
Many online stores are designed such that shoppers can easily access any available discounted products. We propose that deliberately increasing search frictions by placing small obstacles to locating discounted items can improve online retailers’ margins and even... View Details
- December 2018
- Article
Reserve Design: Unintended Consequences and the Demise of Boston's Walk Zones
By: Umut Dur, Scott Duke Kominers, Parag A. Pathak and Tayfun Sönmez
Admissions policies often use reserves to grant certain applicants higher priority for some (but not all) available seats. Boston’s school choice system, for example, reserved half of each school’s seats for local neighborhood applicants while leaving the other half... View Details
- November 2018
- Case
The Bundesliga in the U.S.
By: Stephen A. Greyser, Sascha L. Schmidt and Florian Holzmayer
The Bundesliga, Germany’s premier football (soccer) league, is assessing its global broadcast and marketing strategy, with special focus on the very lucrative but highly competitive U.S. market. Its CEO Christian Seifert believed that a strong international position... View Details
- August 2018 (Revised September 2018)
- Supplement
Predicting Purchasing Behavior at PriceMart (B)
By: Srikant M. Datar and Caitlin N. Bowler
Supplements the (A) case. In this case, Wehunt and Morse are concerned about the logistic regression model overfitting to the training data, so they explore two methods for reducing the sensitivity of the model to the data by regularizing the coefficients of the... View Details
- August 2018 (Revised February 2022)
- Case
Lexoo: Building a Long-Lasting Platform
By: Chiara Farronato and Elena Corsi
Daniel van Binsbergen, Lexoo’s CEO, and web developer Chris O’Sullivan, CTO, had set up Lexoo, a UK legal marketplace, to help small and medium enterprises (SME) find legal advice at low prices. Lexoo had recently invested in a new vertical focused on larger companies.... View Details
- 2018
- Working Paper
Bundling Incentives in (Many-to-Many) Matching with Contracts
By: Jonathan Ma and Scott Duke Kominers
In many-to-many matching with contracts, the way in which contracts are specified can affect the set of stable equilibrium outcomes. Consequently, agents may be incentivized to modify the set of contracts upfront. We consider one simple way in which agents may do so:... View Details
- March 2018 (Revised August 2018)
- Case
Matching Markets for Googlers
By: Bo Cowgill and Rembrand Koning
This case describes how Google designed and launched an internal matching market to assign individual workers with projects and managers. The case evaluates how marketplace design considerations—and several alternative staffing models—could affect the company’s goals... View Details
- Article
Strategy-Proofness of Worker-Optimal Matching with Continuously Transferable Utility
By: Ravi Jagadeesan, Scott Duke Kominers and Ross Rheingans-Yoo
We give a direct proof of one-sided strategy-proofness for worker-firm matching under continuously transferable utility. A new “Lone Wolf” theorem (Jagadeesan et al., 2017) for settings with transferable utility allows us to adapt the method of proving one-sided... View Details
- January 2018 (Revised February 2018)
- Technical Note
Making Markets
Explains how to identify and capitalize on marketplace design opportunities. Defines markets and marketplaces and describes the basic functions of each. Discusses attributes (e.g., heterogeneity of participants' preferences and asymmetry in available information) that... View Details
- 2019
- Working Paper
Do Banks Have an Edge?
By: Juliane Begenau and Erik Stafford
Overall, no! We show that the level and time series variation in cash flows for most bank activities are well matched by capital market portfolios with similar interest rate and credit risk to what banks report to hold. Ignoring operating expenses, bank loans earn high... View Details
Keywords: Banks; Market Efficiency; Bank Capital; Bank Debt; CAPM; Banking; Bank Deposits; Bank Funding Advantage; Leverage; Maturity Transformation; Replicating Portfolio; Efficiency; Banks and Banking; Capital Markets; Performance Evaluation; Performance Efficiency; Banking Industry; United States
- 2017
- Working Paper
Lone Wolves in Competitive Equilibria
By: Ravi Jagadeesan, Scott Duke Kominers and Ross Rheingans-Yoo
This paper develops a class of equilibrium-independent predictions of competitive equilibrium with indivisibilities. Specifically, we prove an analogue of the “Lone Wolf Theorem” of classical matching theory, showing that when utility is perfectly transferable, any... View Details
- January 2018
- Article
Who Gets Hired? The Importance of Competition Among Applicants
By: Edward P. Lazear, Kathryn L. Shaw and Christopher Stanton
Despite seeming to be an important requirement for hiring, the concept of a slot is absent from virtually all of economics. Macroeconomic studies of vacancies and search come closest, but the implications of slot-based hiring for individual worker outcomes has not been... View Details
- November 2017
- Case
Poppy: A Modern Village for Childcare
By: Thomas Eisenmann and Jeff Huizinga
In 2017, management at Poppy, which matched families that required occasional childcare with thoroughly vetted caregivers, was formulating plans for the Seattle-based seed-stage startup’s next phase of expansion. One option was to grow using the same business model... View Details
- Article
An Invitation to Market Design
By: Scott Duke Kominers, Alexander Teytelboym and Vincent P. Crawford
Market design seeks to translate economic theory and analysis into practical solutions to real-world problems. By redesigning both the rules that guide market transactions and the infrastructure that enables those transactions to take place, market designers can... View Details
Keywords: Matching; Trading; Scrip; Liquidity; Efficiency; Equity; Allocation Rules; Marketplaces; Market Design; Marketplace Matching; Auctions
- October 2017
- Case
Shift Technologies, Inc.
By: Thomas Eisenmann and Nicole Tempest Keller
In 2017, management at Shift, an online marketplace that uses a “high touch,” concierge approach to buy and sell used cars, was formulating plans for the San Francisco–based startup’s next phase of expansion. One option was to preserve Shift’s current business model... View Details
- Article
A Field Experiment on Search Costs and the Formation of Scientific Collaborations
By: Kevin Boudreau, Tom Brady, Ina Ganguli, Patrick Gaule, Eva C. Guinan, Anthony Hollenberg and Karim R. Lakhani
We present the results of a field experiment conducted at Harvard Medical School to understand the extent to which search costs affect matching among scientific collaborators. We generated exogenous variation in search costs for pairs of potential collaborators by... View Details