Publications

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

August 2021
Article

Multiple Imputation Using Gaussian Copulas

By: F.M. Hollenbach, I. Bojinov, S. Minhas, N.W. Metternich, M.D. Ward and A. Volfovsky

Missing observations are pervasive throughout empirical research, especially in the social sciences. Despite multiple approaches to dealing adequately with missing data, many scholars still fail to address this vital issue. In this paper, we present a simple-to-use... View Details

Keywords: Missing Data; Bayesian Statistics; Imputation; Categorical Data; Estimation

Find at Harvard

05 Apr 2010
Research & Ideas

HBS Cases: iPads, Kindles, and the Close of a Chapter in Book Publishing

bookstores—the whole physical distribution system—is on the cusp of changing fundamentally." Olson has a particularly informed view of the issue. Before arriving at HBS in 2008, he was CEO of Random House. In a recent unpublished... View Details

Keywords: by Julia Hanna; Information; Publishing; Entertainment & Recreation

Forthcoming
Article

Catching Outliers: Committee Voting and the Limits of Consensus When Financing Innovation

By: Andrey Malenko, Ramana Nanda, Matthew Rhodes-Kropf and Savitar Sundaresan

We document that investment committees of major VCs use a voting rule where one partner `championing' an early-stage investment is sufficient to invest. Their stated reason for this rule is to `catch outliers'. The same VCs use a more conventional `majority' rule for... View Details

Keywords: Optimal Voting Rules; Innovation and Invention; Venture Capital; Investment; Decision Making; Voting

SSRN

2023
Working Paper

Interest-Rate Risk and Household Portfolios

By: Sylvain Catherine, Max Miller, James Paron and Natasha Sarin

How are households exposed to interest-rate risk? When rates fall, households face lower future expected returns but those holding long-term assets—disproportionately the wealthy and middle-aged—experience capital gains. We study the hedging demand for long-term assets... View Details

Keywords: Portfolio Choice; Social Security; Interest Rates; Investment Portfolio; Equality and Inequality; Welfare

March 2022
Article

Targeting High Ability Entrepreneurs Using Community Information: Mechanism Design in the Field

By: Reshmaan Hussam, Natalia Rigol and Benjamin N. Roth

Identifying high-growth microentrepreneurs in low-income countries remains a challenge due to a scarcity of verifiable information. With a cash grant experiment in India we demonstrate that community knowledge can help target high-growth microentrepreneurs; while the... View Details

Keywords: Microentrepreneurs; Community Information; Field Experiment; Loans; Entrepreneurship; Developing Countries and Economies; Financing and Loans; Information; Mathematical Methods; India

Find at Harvard

August 2016
Case

Building Smart Neighborhoods at Bouygues

By: Amy C. Edmondson, Bertrand Moingeon, Guo Bai and Jean-François Harvey

Can a consortium of 16 organizations, including multinational corporations, local government agencies, and startups, turn a rundown Paris suburb into a “smart” (ecologically viable, high-tech, livable) neighborhood? This case explores how Bouygues Immobilier led such a... View Details

Keywords: Collaboration; Teaming; Cross-industry Collaboration; Interorganizatonal Relationships; Innovation; Nascent Industries; Smart Cities; Governance; Collaborative Innovation and Invention; Innovation and Management; Innovation Strategy; Technological Innovation; Information Technology Industry; Construction Industry; Paris; France

June 2016 (Revised December 2017)
Case

The Cheese and the Oligarchs: The Politics, the Media, and Israel's Dream of a Start-Up Nation

By: Rafael Di Tella and Christine Snively

Israel enjoyed the highest concentration of technology start-ups in the world per capita. Despite regional instability, the country maintained strong economic growth and was considered a high-tech powerhouse. But not all Israelis benefited. Between the 1980s and 2010s,... View Details

Keywords: Entrepreneurship; Information Technology; Business Conglomerates; Business Startups; Israel

2011
Working Paper

The Cost of Capital for Alternative Investments

By: Jakub W. Jurek and Erik Stafford

This paper studies the cost of capital for alternative investments. We document that the risk profile of the aggregate hedge fund universe can be accurately matched by a simple index put option writing strategy that offers monthly liquidity and complete transparency... View Details

Keywords: Cost of Capital; Financial Liquidity; Investment; Investment Return; Mathematical Methods; Risk and Uncertainty

December 2006 (Revised December 2008)
Case

Wireless Generation

Reflecting on an innovative joint venture that his company executed with a public school district in 2004, the CEO of Wireless Generation, a five-year-old, privately held educational technology company, is contemplating the company's product development strategy in... View Details

Keywords: Joint Ventures; Education; Government Legislation; Growth and Development Strategy; Product Development; Business and Government Relations; Education Industry

February 2005
Case

L. Londell McMillan (A)

On the plane back to New York City, L. Londell McMillan focused on the music on his headphones, the latest offering from his friend and long-time client, Prince Rogers Nelson--the artist known as "Prince." McMillan and Prince had spent several days contemplating a... View Details

Keywords: Contracts; Music Entertainment; Product Marketing; Music Industry

February 2005 (Revised April 2011)
Case

Haier's U.S. Refrigerator Strategy

By: Pankaj Ghemawat, Thomas M. Hout and Jordan I. Siegel

Haier, the first Chinese consumer durable brand in the United States, succeeded in the compact refrigerator, freezer, and air conditioner markets and then built a U.S. factory to enter the full-size market. Issues include the value of a local entrepreneur to the Asian... View Details

Keywords: Factories, Labs, and Plants; Global Strategy; Growth and Development Strategy; Brands and Branding; Market Entry and Exit; Competitive Strategy; Consumer Products Industry; China; United States

Herman B. ("Dutch") Leonard is Eliot I. Snider and Family Professor of Business Administration at the Harvard Business School and the George F. Baker, Jr. Professor of Public Sector Management at Harvard University's John F. Kennedy School of Government. In... View Details

Keywords: education industry; federal government; health care; nonprofit industry; state government

January 2023 (Revised April 2023)
Case

Cobalt Robotics: Scaling Workplace Robotics

By: Jeffrey F. Rayport, Nicole Tempest Keller and Kyung Keun Park

Founded in 2016, Cobalt Robotics, based in Fremont, California, was a Robot-as-a-Service (RaaS) company that built autonomous workplace robots that were designed to replace or supplement human security guards. Outfitted with over 60 sensors, Cobalt robots patrolled... View Details

Keywords: Information Infrastructure; Disruptive Innovation; Innovation and Invention; Marketing Strategy; Marketing Channels; Customers; Technology Industry; United States; California

Research Summary

Portfolio Betas Do Not Make for Better Asset Pricing Tests

Many papers claim that because using portfolios instead of individual stocks as test assets minimizes idiosyncratic volatility, their use also yields more precise estimates of risk premia. I show that while portfolio formation does lead to more efficient beta... View Details

March 2005
Case

Henkel Iberica (A)

By: Francisco de Asis Martinez-Jerez, V.G. Narayanan and Lisa Brem

In 2002, Esteban Garriga, customer service director at Henkel Iberica, questions whether Collaborative Planning, Forecasting, and Replenishment (CPFR) would help manage retail promotions and limit their impact on the stock-outs and obsolete inventory. Describes the... View Details

Keywords: Business Subsidiaries; Forecasting and Prediction; Price; Distribution Channels; Strategic Planning; Commercialization; Valuation; Rail Industry; Germany; Spain

24 Jan 2024
Op-Ed

Why Boeing’s Problems with the 737 MAX Began More Than 25 Years Ago

Stonecipher that turned Boeing’s culture from excellence in aviation design, quality, and safety into emphasizing short-term profit and distributing cash to shareholders via stock buybacks. McNerney compounded the problem through his... View Details

Keywords: by Bill George; Air Transportation; Transportation; Aerospace

Research Summary

Performance Impact of Continuous Replenishment Systems

By: Janice H. Hammond

Janice H. Hammond has conducted (with Ted Clark of Hong Kong University of Science and Technology) a survey of U.S. retailers to determine how the implementation of continuous replenishment programs between manufacturers and retailers affects supply channel... View Details

2021
Article

Evidence of Decreasing Internet Entropy: The Lack of Redundancy in DNS Resolution by Major Websites and Services

By: Samantha Bates, John Bowers, Shane Greenstein, Jordi Weinstock, Jonathan Zittrain and Yunhan Xu

This paper analyzes the extent to which the Internet’s global domain name resolution (DNS) system has preserved its distributed resilience given the rise of cloud-based hosting and infrastructure. We explore trends in the concentration of the DNS space since at least... View Details

Keywords: Domain Name System; Resilience; Entropy; Internet and the Web; Infrastructure; Performance Effectiveness; Safety; Cybersecurity