Publications

05 Oct 2021
Blog Post

First-Gen Voices: Eric Westphal on Tapping into the Global Alumni Network & Making a Difference Across Borders

back to Brazil with my partner for the summer after I had been away for almost 20 years.” Making the Alumni Connection Broadening his location scope, Westphal changed his filter to fast growing early-stage tech companies where he could work closely with a founder. In... View Details

November 2012 (Revised June 2013)
Case

The Facebook IPO Litigation

By: Lena G. Goldberg and Annelena Loeb

Despite its success in the social-networking space, Facebook Inc.'s May 2012 IPO was largely considered a failure. Facebook faced multiple lawsuits and its share price had dropped significantly. Adversaries contended that Facebook had misled investors and violated... View Details

Keywords: Social Networking; IPO; Litigation Risk; Initial Public Offering; Ethics; Lawsuits and Litigation; Failure; Consumer Products Industry; Information Technology Industry; Entertainment and Recreation Industry; United States

Educators

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July 2013
Article

Ethnic Innovation and U.S. Multinational Firm Activity

By: C. Fritz Foley and William R. Kerr

This paper studies the impact that immigrant innovators have on the global activities of U.S. firms by analyzing detailed data on patent applications and on the operations of the foreign affiliates of U.S. multinational firms. The results indicate that increases in the... View Details

Keywords: Technology Transfer; Innovation; Ethnic Networks; Patents; Diasporas; Ethnicity; Multinational Firms and Management; Competitive Advantage; Research and Development; Foreign Direct Investment; Innovation and Invention; United States

Summer 2014
Article

When Does a Platform Create Value by Limiting Choice?

By: Ramon Casadesus-Masanell and Hanna Halaburda

We present a theory for why it might be rational for a platform to limit the number of applications available on it. Our model is based on the observation that even if users prefer application variety, applications often also exhibit direct network effects. When there... View Details

Keywords: Platform Governance; Direct Network Effects; Indirect Network Effects; Complements; Tragedy Of The Commons; Equilibrium Selection; Coordination; Foresight; Strategy; Value Creation; Digital Platforms; Balance and Stability; Decision Choices and Conditions; Consumer Behavior; Applications and Software; Network Effects

SSRN

Research Summary

When Cultural Worlds Collide: Investigating the Cross-Cultural Multiple Audience Problem

Today, many individuals have social networks that span cultural boundaries. For example, you may have a network of colleagues in China, friends and family in the U.S., and a group of childhood friends in Greece. Chances are, you are probably comfortable interacting... View Details

Keywords: Cross-cultural Networks; Multiple Audience Problem; Managing Multiple Identities

Competing in the Age of AI: Strategy and Leadership When Algorithms and Networks Run the World

In industry after industry, data, analytics, and AI-driven processes are transforming the nature of work. While we often still treat AI as the domain of a specific skill, business function, or sector, we have entered a new era in which AI is challenging the very... View Details

May 1995
Article

The Influence of Supervisory Promotion and Network Location on Subordinate Careers in a Dual Ladder RD&E Setting

By: R. Katz, Michael Tushman and T. Allen

Keywords: Human Resources; Personal Development and Career; Research and Development

2022
Article

Probing GNN Explainers: A Rigorous Theoretical and Empirical Analysis of GNN Explanation Methods.

By: Chirag Agarwal, Marinka Zitnik and Himabindu Lakkaraju

As Graph Neural Networks (GNNs) are increasingly employed in real-world applications, it becomes critical to ensure that the stakeholders understand the rationale behind their predictions. While several GNN explanation methods have been proposed recently, there has... View Details

Keywords: Graph Neural Networks; Explanation Methods; Mathematical Methods; Framework; Theory; Analysis

Web

The Network Effect: HBS and the Arts in NYC | Social Enterprise | Harvard Business School

Article

Two-Sided Platforms: Product Variety and Pricing Structures

By: Andrei Hagiu

This paper provides a new modeling framework to analyze two-sided platforms connecting producers and consumers. In contrast to the existing literature, indirect network effects are determined endogenously, through consumers' taste for variety and producer competition.... View Details

Keywords: Pricing Structure; Indirect Network Effects; Product Variety; Price; Network Effects; Two-Sided Platforms; Product; Renting or Rental; Competition

2013
Working Paper

Competing by Restricting Choice: The Case of Search Platforms

By: Hanna Halaburda and Mikolaj Jan Piskorski

Seminal papers recommend that platforms in two-sided markets increase the number of complements available. We show that a two-sided platform can successfully compete by limiting the choice of potential matches it offers to its customers while charging higher prices... View Details

Keywords: Matching Platform; Indirect Network Effects; Limits To Network Effects; Decision Choices and Conditions; Network Effects; Two-Sided Platforms; Marketplace Matching; Competitive Strategy

SSRN

01 Feb 2017
News

Does “Liking” Lead to Loving? The Impact of Joining a Brand’s Social Network on Marketing Outcomes

2006
Chapter

The Social Dimensions of Entrepreneurship

By: Amir Licht and Jordan I. Siegel

Schumpeter's canonical depiction of the entrepreneur as an agent of social and economic change implies that entrepreneurs are especially sensitive to the social environment. We use an organizing framework based on institutional economics, in combination with lessons... View Details

Keywords: Entrepreneurship; Social Institutions; Culture; Law; Social Networks; Reputation; Social Entrepreneurship; Corporate Social Responsibility and Impact

September 1998
Article

Producer Network Positions and Propensities to Collaborate: An Investigation of Strategic Alliance Formations in a High-technology Industry

Keywords: Cooperation; Strategy; Alliances; Information Technology; Networks; Technology Industry

2021
Working Paper

The Value of Data and Its Impact on Competition

By: Marco Iansiti

Common regulatory perspective on the relationship between data, value, and competition in online platforms has increasingly centered on the volume of data accumulated by incumbent firms. This view posits the existence of "data network effects," where more data leads to... View Details

Keywords: Online Platforms; Data Network Effects; Analytics and Data Science; Value; Competition; Digital Platforms

SSRN

25 Sep 2015
News

"Education Has Been My Pathway"

Keywords: career advice; networking; Ireland

September 16, 2022
Article

A Causal Test of the Strength of Weak Ties

By: Karthik Rajkumar, Guillaume Saint-Jacques, Iavor I. Bojinov, Erik Brynjolfsson and Sinan Aral

The authors analyzed data from multiple large-scale randomized experiments on LinkedIn’s People You May Know algorithm, which recommends new connections to LinkedIn members, to test the extent to which weak ties increased job mobility in the world’s largest... View Details

Keywords: Job Mobility; Social Networks; Social Ties; Networks; Personal Development and Career

Register to Read

2022
Chapter

Foreword

By: Jeff Polzer

Keywords: People Analytics; Networks; Analysis

Purchase

October 2014
Module Note

Market Design in Online Businesses (Abridged)

By: Peter Coles and Benjamin Edelman

The purpose of this note is to characterize the challenges entrepreneurs may face in creating a well-functioning ecosystem of users, and to equip entrepreneurs with tools to overcome these obstacles. The note is meant to accompany the final module of the "The Online... View Details

Keywords: Platform Design; Network Effects; Market Design; Information Technology Industry; Information Industry; Advertising Industry