by Feng Zhu - Publications - Faculty & Research - Harvard Business School

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August 2015 (Revised January 2017)
Technical Note

From Correlation to Causation

By: Feng Zhu and Karim R. Lakhani

To make sound business decisions, managers must be comfortable with the concepts of correlation and causation. This background note provides an overview of correlation and causation using examples and explains why the former does not imply the latter. It also describes... View Details

Keywords: Statistics; Regression; Data Analytics; Decisions; Forecasting and Prediction; Judgments

2023
Article

Association Between Regulatory Submission Characteristics and Recalls of Medical Devices Receiving 510(k) Clearance

By: Alexander O. Everhart, Soumya Sen, Ariel D. Stern, Yi Zhu and Pinar Karaca-Mandic

Importance: Most regulated medical devices enter the U.S. market via the 510(k) regulatory submission pathway, wherein manufacturers demonstrate that applicant devices are “substantially equivalent” to 1 or more “predicate” devices (legally marketed medical devices... View Details

Keywords: Recalls; Governing Rules, Regulations, and Reforms; Medical Devices and Supplies Industry

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27 Jul 2010
First Look

First Look: July 27

Feng Zhu Abstract We provide the first formal model of business model innovation in a game-theoretic framework. Our analysis focuses on sponsor-based business model innovations where a firm monetizes its... View Details

Keywords: Martha Lagace

March 2020
Module Note

Scaling and Sustaining Platform Businesses

Keywords: Platform Businesses; Platform Disruption; Platforms; Digital Platforms; Technology Industry

January 2020
Teaching Note

Apple Pay and Mobile Payments in Australia (A) and (B)

2017
Working Paper

Threat of Platform-Owner Entry and Complementor Responses: Evidence from the Mobile App Market

We examine how app developers on the Android mobile platform adjust their innovation efforts (rate and direction) and value-capture strategies in response to Google’s entry threat and actual entry into their markets. We find that, after Google’s entry threat increases,... View Details

Keywords: Platform-owner Entry; Entry Threat; Innovation; Complementors; Mobile App Industry; Mobile and Wireless Technology; Innovation Strategy; Market Entry and Exit

October 2023
Article

Laboratory Safety and Research Productivity

By: Alberto Galasso, Hong Luo and Brooklynn Zhu

Are laboratory safety practices a tax on scientific productivity? We examine this question by exploiting the substantial increase in safety regulations at the University of California following the shocking accidental death of a research assistant in 2008.... View Details

Keywords: Economics Of Science; Risk Perception; Safety Regulations; Governing Rules, Regulations, and Reforms; Working Conditions; Safety; Performance Productivity

August 2024 (Revised March 2025)
Case

DBS' AI Journey

By: Feng Zhu, Harold Zhu and Adina Wong

Headquartered in Singapore, DBS Bank, one of Asia's leading financial services groups, embarked on a multi-year digital transformation under CEO Piyush Gupta in 2014. It was then that DBS also began experimenting with AI to drive value for the business and customers.... View Details

Keywords: Corporate Governance; AI and Machine Learning; Digital Transformation; Risk Management; Value Creation; Banking Industry; Financial Services Industry; Asia; Singapore

May 2021
Article

Ideology and Composition Among an Online Crowd: Evidence From Wikipedians

By: Shane Greenstein, Grace Gu and Feng Zhu

Online communities bring together participants from diverse backgrounds and often face challenges in aggregating their opinions. We infer lessons from the experience of individual contributors to Wikipedia articles about U.S. politics. We identify two factors that... View Details

Keywords: User Segregation; Online Community; Contested Knowledge; Collective Intelligence; Ideology; Bias; Wikipedia; Knowledge Sharing; Perspective; Government and Politics

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January 2020 (Revised February 2020)
Teaching Note

edaixi (eWash): Digital Transformation of Laundry Services (A) and (B)

Teaching Note for HBS Nos. 617-034 and 617-038. View Details

June 21, 2019
Article

When Tech Companies Compete on Their Own Platforms

One common complaint from third parties about platform businesses is that they see what succeeds on their platforms and then enter the most profitable areas themselves, often decimating third parties in the process. Studies have identified several motivations for... View Details

Keywords: Platform-based Markets; Platform-owner Entry; Digital Platforms; Market Entry and Exit; Competition

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23 Mar 2010
First Look

First Look: March 23

(1990) and Petersen-Rajan (1995) models of information acquisition in credit markets. Download the paper: http://www.hbs.edu/research/pdf/10-077.pdf Strategies to Fight Ad-sponsored Rivals Authors: Ramon Casadesus-Masanell and Feng View Details

Keywords: Martha Lagace

2021
Working Paper

Time Dependency, Data Flow, and Competitive Advantage

By: Ehsan Valavi, Joel Hestness, Marco Iansiti, Newsha Ardalani, Feng Zhu and Karim R. Lakhani

Data is fundamental to machine learning-based products and services and is considered strategic due to its externalities for businesses, governments, non-profits, and more generally for society. It is renowned that the value of organizations (businesses, government... View Details

Keywords: Economics Of AI; Value Of Data; Perishability; Time Dependency; Flow Of Data; Data Strategy; Analytics and Data Science; Value; Strategy; Competitive Advantage

May 2019 (Revised August 2019)
Teaching Note

X Fire Paintball & Airsoft: Is Amazon a Friend or Foe? (A) and (B)

Teaching Note for HBS Nos. 617-046 and 617-047. View Details

Article

Friends or Foes? Examining Platform Owners' Entry into Complementors' Spaces

As platform owners continue to expand their ecosystems, many of them have started to provide consumers with their own complementary applications. These moves position the platform owners as direct competitors to their complementors. This paper surveys empirical studies... View Details

Keywords: Platform; Complementors; Digital Platforms; Market Entry and Exit; Competition

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March 2020 (Revised March 2016)
Teaching Note

SF Express: From Delivery to E-Commerce

November 2021
Supplement

Ant Group (B)

By: Krishna G. Palepu, Feng Zhu and Susie L. Ma

Keywords: Information Technology; Value Creation; Network Effects; Strategy; Disruptive Innovation; Technology Industry; Financial Services Industry; China

Forthcoming
Article

Antitrust Platform Regulation and Entrepreneurship: Evidence from China

By: Ke Rong, D. Daniel Sokol, Di Zhou and Feng Zhu

Many jurisdictions have launched antitrust enforcement and brought in regulation of large tech platforms. The swift and strict implementation of China’s Anti-Monopoly Guidelines for the Platform Economy (Platform Guidelines) provides a quasi-natural experiment... View Details

Keywords: Platform; Antitrust; Regulation; Entrepreneurship; Venture Capital; Governing Rules, Regulations, and Reforms; Competition; Market Entry and Exit; Supply and Industry; China

2024
Working Paper

Fiscal Policy under Convex Supply Curves

By: Shlok Goyal, Avi Lipton and Borui Niklas Zhu

Recent empirical evidence suggests that supply curves are convex. Supply curve convexity is at odds with conventional Phillips curves, which rely on an infinitely elastic underlying supply curve. This paper explores the effect of supply curve convexity on the... View Details

Keywords: Fiscal Stimulus; Fiscal Policy; Inflation; Inflation and Deflation; Macroeconomics; Policy; Mathematical Methods; United States

November 7, 2016
Article

How Wikipedia Keeps Political Discourse from Turning Ugly

By: Shane Greenstein and Feng Zhu

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