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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

January–February 2020
Article

Competing in the Age of AI

By: Marco Iansiti and Karim R. Lakhani

Today’s markets are being reshaped by a new kind of firm—one in which artificial intelligence (AI) runs the show. This cohort includes giants like Google, Facebook, and Alibaba, and growing businesses such as Wayfair and Ocado. Every time we use their services, the... View Details

Keywords: Artificial Intelligence; Algorithms; Technological Innovation; Business Model; Competition; Competitive Strategy; AI and Machine Learning

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January 2, 2020
Article

Changes in Quality of Care After Hospital Mergers and Acquisitions

By: Nancy Dean Beaulieu, Leemore S. Dafny, B. E. Landon, Jesse Dalton, Ifedayo Kuye and J. Michael McWilliams

Background: The hospital industry has consolidated substantially during the past two decades and at an accelerated pace since 2010. Multiple studies have shown that hospital mergers have led to higher prices for commercially insured patients, but research about effects... View Details

Keywords: Hospitals; Mergers and Acquisitions; Health Care and Treatment; Quality

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December 2019
Case

Steemit: A New Social Media?

By: Ramon Casadesus-Masanell, Alexander White and Karen Elterman

This case discusses the alternative social media site Steemit, including the principles it was founded on in 2016 and the challenges it faced in 2019. Steemit was a blockchain-based platform that aimed to differentiate itself from other social media companies by... View Details

December 2019
Background Note

An (Abbreviated) Perspective on Entrepreneurship

By: Mitchell Weiss and Benjamin Henkes

Among the many competing definitions of entrepreneurship, the one adopted in “The Entrepreneurial Manager” at HBS was authored by Howard Stevenson in the 1980s and elaborated on in the decades since. Stevenson provided a managerial take on the term—he described... View Details

Keywords: Entrepreneurial Managers; Entrepreneurship

Article

How to Use Heuristics for Differential Privacy

By: Seth Neel, Aaron Leon Roth and Zhiwei Steven Wu

We develop theory for using heuristics to solve computationally hard problems in differential privacy. Heuristic approaches have enjoyed tremendous success in machine learning, for which performance can be empirically evaluated. However, privacy guarantees cannot be... View Details

Article

The Role of Interactivity in Local Differential Privacy

By: Matthew Joseph, Jieming Mao, Seth Neel and Aaron Leon Roth

We study the power of interactivity in local differential privacy. First, we focus on the difference between fully interactive and sequentially interactive protocols. Sequentially interactive protocols may query users adaptively in sequence, but they cannot return to... View Details

November–December 2019
Article

Head, Heart or Hands: How Do Employees Respond to a Radical Global Language Change Over Time?

By: Sebastian Reiche and Tsedal Neeley

To understand how recipients respond to radical change over time across cognitive, affective, and behavioral dimensions, we conducted a longitudinal study of a mandated language change at a Chilean subsidiary of a large U.S. multinational organization. The... View Details

Keywords: Language; Communication; Change; Employees; Attitudes; Emotions; Globalized Firms and Management

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September 2019 (Revised February 2020)
Teaching Note

Commonwealth Bank of Australia: Unbanklike Experimentation

By: Ryan W. Buell and Leslie K. John

Email mking@hbs.edu for a courtesy copy.

This Teaching Note explains the theory of the case and teaching plan for the case: Commonwealth Bank of Australia: Unbanklike Experimentation (619-018). In August 2017,... View Details

Keywords: Transparency; Experimentation; Banks and Banking; Credit Cards; Customer Focus and Relationships; Competitive Strategy; Banking Industry; Australia

September 2019
Article

Technology Reemergence: Creating New Value for Old Technologies in Swiss Mechanical Watchmaking, 1970-2008

By: Ryan Raffaelli

In 1983, 14 years after the introduction of the battery-powered quartz watch, mechanical watches and the Swiss watchmakers who built them were predicted to be obsolete (Landes, 1983). Unexpectedly, however, by 2008 the Swiss mechanical watchmaking industry had... View Details

Keywords: Technology Reemergence; Technology Cycles; Cognition And Market Redefinition; Legacy Technology Trajectories; Information Technology; Demand and Consumers; Organizational Change and Adaptation; Identity; Change; Consumer Products Industry; Switzerland

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November 2019
Other Article

Corrigendum to "Multilateral Matching"

By: Keisuke Bando, Toshiyuki Hirai, John William Hatfield and Scott Duke Kominers

We identify an error in the claim by Hatfield and Kominers (2015) that every stable outcome in the setting of multilateral matching with contracts is efficient. We then show that the result can be recovered under a suitable differentiability condition. View Details

Keywords: Matching; Stability; Competitive Equilibrium; Networks; Joint Ventures; Balance and Stability

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April 2019 (Revised July 2019)
Case

Aperture Investors

By: Krishna G. Palepu, George Serafeim and David Lane

Aperture Investors is a startup investment firm that seeks to disrupt the asset management industry through competitive differentiation by charging investors primarily when its portfolio managers outperform the marketplace. Headed by Wall Street veteran Peter Kraus and... View Details

Keywords: Business Model; Talent and Talent Management; Investment; Investment Funds; Asset Management; Recruitment; Selection and Staffing; Marketing Channels; Emerging Markets; Partners and Partnerships; Motivation and Incentives; Financial Services Industry

March 2019
Teaching Note

Zespri Grows

By: David E. Bell and John Masko

Teaching Note for HBS No. 519-047. View Details

March 2019 (Revised April 2021)
Case

The DivaCup: Navigating Distribution and Growth

By: Ayelet Israeli

When the mother-daughter founders of DivaCup set out with a mission to disrupt the menstrual care industry with an innovative product form, they initially struggled to gain legitimacy and convince retailers to carry their unique product. Fifteen years later, the... View Details

2018
Working Paper

Corporate Sustainability: A Strategy?

By: George Serafeim

We explore the conditions under which firms maintain their competitive advantage through sustainability-based differentiation when faced with imitation pressures by industry peers. We document growing intraindustry convergence on sustainability actions over time for... View Details

Keywords: Sustainability; Corporate Performance; Industry Analysis; CSR; ESG; ESG (Environmental, Social, Governance) Performance; Environment; Social Responsibility; Strategy And Execution; Corporate Social Responsibility and Impact; Environmental Sustainability; Strategy; Performance; Corporate Strategy

January 2019 (Revised October 2020)
Technical Note

Brand Storytelling

Marketers have long appreciated the value and power of storytelling. Stories fill brands with resonant and relevant meaning and empower brands to serve as critical elements in the lives of consumers. Mastering the art of brand storytelling is an increasingly important... View Details

Keywords: Brand Communication; Brand Management; Brand Storytelling; Marketing; Marketing Communications; Brands and Branding; Marketing Strategy; Advertising; Consumer Behavior; Consumer Products Industry

Article

Accuracy First: Selecting a Differential Privacy Level for Accuracy-Constrained ERM

By: Katrina Ligett, Seth Neel, Aaron Leon Roth, Bo Waggoner and Steven Wu

Traditional approaches to differential privacy assume a fixed privacy requirement ϵ for a computation, and attempt to maximize the accuracy of the computation subject to the privacy constraint. As differential privacy is increasingly deployed in practical settings, it... View Details

Keywords: Differential Privacy; Empirical Risk Minimization; Accuracy First

2018
Article

What Can Managers Privately Disclose to Investors?

By: Eugene F. Soltes

Regulators have long been aware that differential access to information can undermine the efficiency and fairness of financial markets. In an effort to place investors on equal footing, the Securities and Exchange Commission in 2000 created Regulation Fair Disclosure... View Details

Keywords: Disclosure Regulation; Information; Communication; Business and Shareholder Relations; Governing Rules, Regulations, and Reforms

November 2018 (Revised April 2019)
Case

Zespri Grows

By: David E. Bell and Natalie Kindred

Controlling about a third of global kiwifruit exports by volume and nearly half by value in 2018, Zespri was a grower-owned “corporatized cooperative” with the exclusive right to export New Zealand-grown kiwifruit (except to Australia). Zespri did not grow fruit but... View Details

October 2018 (Revised February 2020)
Case

Commonwealth Bank of Australia: Unbanklike Experimentation

By: Ryan W. Buell and Leslie K. John

Email mking@hbs.edu for a courtesy copy.

In August 2017, Commonwealth Bank of Australia was looking for ways to differentiate itself from competing banks and was also trying to improve the financial well-being of... View Details

Keywords: Transparency; Experimentation; Banks and Banking; Credit Cards; Customer Focus and Relationships; Competitive Strategy; Banking Industry; Australia

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