Publications

2013
Working Paper

Competing Ad Auctions

By: Itai Ashlagi, Benjamin Edelman and Hoan Soo Lee

We present a two-stage model of competing ad auctions. Search engines attract users via Cournot-style competition. Meanwhile, each advertiser must pay a participation cost to use each ad platform, and advertiser entry strategies are derived using symmetric Bayes-Nash... View Details

Keywords: Online Advertising; Auctions; Market Participation; Market Platforms; Mathematical Methods; Competition

SSRN

March 2022
Case

In Data We Trust: Be Mobile Africa and Furthering Financial Inclusion Across the African Continent

By: Lauren Cohen, Grace Headinger and Pierre Marchesseault

To Cédric Jeannot, leveraging technology to promote financial inclusion was personal. After no established financial institution would accept his technology platform to lower transaction costs for free, Jeannot launched FinTech company Be Mobile Africa in May 2020.... View Details

Keywords: Finance; Fintech; Emerging Market; Fundraising; Financial Inclusion; Strategy; Expansion; Management; Entrepreneurship; Personal Finance; Corporate Social Responsibility and Impact; Growth and Development Strategy; Financial Services Industry; Banking Industry; Africa; Togo; Nigeria; Ghana

November 2008 (Revised November 2008)
Case

Cyworld: Creating and Capturing Value in a Social Network

By: Sunil Gupta and Sangman Han

In May 2008, the new CEO of Cyworld, a social network company in Korea, had to decide how to create and capture value from his rapidly growing user base. Cyworld was founded in 1999, and in 2003 it was acquired by SK Telecom, a leading mobile service provider in Korea.... View Details

Keywords: Customer Value and Value Chain; Consumer Behavior; Social and Collaborative Networks; Segmentation; Value Creation; South Korea

Forthcoming
Article

Human-Algorithm Collaboration with Private Information: Naïve Advice Weighting Behavior and Mitigation

By: Maya Balakrishnan, Kris Ferreira and Jordan Tong

Even if algorithms make better predictions than humans on average, humans may sometimes have private information which an algorithm does not have access to that can improve performance. How can we help humans effectively use and adjust recommendations made by... View Details

Keywords: AI and Machine Learning; Analytics and Data Science; Forecasting and Prediction; Digital Marketing

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

Find at Harvard

March 2024
Case

ixigo

By: Ranjay Gulati and Rachna Tahilyani

Ixigo is India’s second-largest online travel aggregator (OTA) and the market leader among private train OTAs. It has overcome numerous near-death crises to emerge as a customer-centric, profitable firm. It aspires to become the leading OTA in the next billion Internet... View Details

Keywords: Initial Public Offering; Profit; Growth and Development; Product Positioning; Travel Industry; India

25 Jun 2019
Research & Ideas

The Powerful Strategic Tool Companies Should Not Try to Control

products sold and marketed by LEGO. In addition to reducing innovation costs, this often leads to an increase in authentic, word-of-mouth advertising as users promote designs that they created or designs... View Details

Keywords: by Danielle Kost

Research Summary

Managing Networked Businesses

By: Thomas R. Eisenmann

Platform-based businesses that leverage network effects face a distinctive set of management challenges. A platform encompasses components and rules that facilitate interactions between the platform's users. A platform-based product or service exhibits a network... View Details

May, 2019
Article

Who Would You Like to Work With?: Use of Individual Characteristics and Social Networks in Team Formation Systems

By: Diego Gomez-Zara, Matthew Paras, Marlon Twyman, Jacqueline N. Lane, Leslie A. DeChurch and Noshir Contractor

People and organizations are increasingly using online platforms to assemble teams. In response, HCI researchers have theorized frameworks and created systems to support team assembly. However, little is known about how users search for and choose teammates on these... View Details

Keywords: Team Formation; Groups and Teams; Recruitment; Networks; Diversity

October 2017 (Revised August 2018)
Case

HTC and Virtual Reality

By: David B. Yoffie, Andy Wu and Allison M. Ciechanover

In fall 2017, HTC CEO and Chairperson Cher Wang was driving the company to focus on virtual reality (VR). HTC's first VR product, VIVE, released in spring 2016, was applauded for its superior immersive room-scale capabilities. However, early adoption of VR beyond... View Details

Keywords: Virtual Reality; Strategy; Competition; Information Technology; Innovation and Management; Consumer Behavior; Customer Relationship Management; Technology Industry

11 Mar 2015
Research & Ideas

How Do You Grade Out as a Negotiator?

drop. It's all fine to read books and take courses, but we have this rich negotiation experience, and if we could tap it and analyze it in a meaningful way, it could lead to more improvement." With that in mind, Wheeler conceived of a new... View Details

Keywords: by Michael Blanding

March–April 2023
Article

Market Segmentation Trees

By: Ali Aouad, Adam Elmachtoub, Kris J. Ferreira and Ryan McNellis

Problem definition: We seek to provide an interpretable framework for segmenting users in a population for personalized decision making. Methodology/results: We propose a general methodology, market segmentation trees (MSTs), for learning market... View Details

Keywords: Decision Trees; Computational Advertising; Market Segmentation; Analytics and Data Science; E-commerce; Consumer Behavior; Marketplace Matching; Marketing Channels; Digital Marketing

May–June 2019
Article

U-Shaped Conformity in Online Social Networks

By: Monic Sun, Michael Zhang and Feng Zhu

We explore how people balance their needs to belong and to be different from their friends by studying their choices of a virtual-house wall color on a leading Chinese social-networking site. The setting enables us to randomize both the popular color and the adoption... View Details

Keywords: Conformity; Normative Social Influence; Social Networks; Field Experiment; Social and Collaborative Networks; Behavior; Attitudes; Social Media

Find at Harvard

19 Oct 2016
HBS Seminar

Luís Cabral, NYU Stern School of Business

27 Jul 2009
Research & Ideas

Social Network Marketing: What Works?

When marketers want to reach users of social networks such as Facebook, MySpace, or Cyworld, they have two choices: buy advertising or start a viral campaign. New research by Harvard Business School professor Sunil Gupta suggests that... View Details

Keywords: by Sarah Jane Gilbert; Advertising; Publishing; Retail

Research Summary

Consumer Response to Online Ratings and Recommendations

Jolie is currently conducting several laboratory and field experiments to assess the tendency of individuals to employ predictable heuristics in complex information aggregation tasks, thus leading to search and choice behavior that is suboptimal relative to the fully... View Details

21 Feb 2012
First Look

First Look: Feb. 21

impact of rankings on application decisions. When explicit rankings of colleges are published in U.S. News, a one-rank improvement leads to a 1-percentage-point increase in the number of applications to that college. Second, we show that... View Details

Keywords: Sean Silverthorne

Fall 2023
Article

Infringing Use as a Path to Legal Consumption: Evidence from a Field Experiment

By: Hong Luo and Julie Holland Mortimer

Digitization has transformed how users find and use copyrighted goods, but many existing legal options remain difficult to access, possibly leading to infringement. In a field experiment, we contact firms that are caught infringing on expensive digital images. Emails... View Details

Keywords: Copyright Infringement; Field Experiment; Copyright; Lawfulness

Find at Harvard

2019
Working Paper

Infringing Use as a Path to Legal Consumption: Evidence from a Field Experiment

By: Hong Luo and Julie Holland Mortimer

Digitization has transformed how users find and use copyrighted goods, but many existing legal options remain difficult to access, possibly leading to infringement. In a field experiment, we contact firms that are caught infringing on expensive digital images. Emails... View Details

Keywords: Copyright Infringement; Field Experiment; Intellectual Property; Lawfulness