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Show Results For
- All HBS Web
(2,151)
- News (417)
- Research (1,293)
- Events (25)
- Multimedia (3)
- Faculty Publications (448)
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- 2023
- Article
Estimating Causal Peer Influence in Homophilous Social Networks by Inferring Latent Locations.
By: Edward McFowland III and Cosma Rohilla Shalizi
Social influence cannot be identified from purely observational data on social networks, because such influence is generically confounded with latent homophily, that is, with a node’s network partners being informative about the node’s attributes and therefore its... View Details
Keywords: Causal Inference; Homophily; Social Networks; Peer Influence; Social and Collaborative Networks; Power and Influence; Mathematical Methods
McFowland III, Edward, and Cosma Rohilla Shalizi. "Estimating Causal Peer Influence in Homophilous Social Networks by Inferring Latent Locations." Journal of the American Statistical Association 118, no. 541 (2023): 707–718.
- October 2011
- Article
The Surprising Power of Age-Dependent Taxes
This article provides a new, empirically driven application of the dynamic Mirrleesian framework by studying a feasible and potentially powerful tax reform: age-dependent labor income taxation. I show analytically how age dependence improves policy on both the... View Details
Weinzierl, Matthew C. "The Surprising Power of Age-Dependent Taxes." Review of Economic Studies 78, no. 4 (October 2011): 1490–1518. (Also Harvard Business School Working Paper, No. 11-114, May 2011.)
- September 2015
- Article
Design and Implementation of a Privacy Preserving Electronic Health Record Linkage Tool in Chicago
By: Abel Kho, John Cashy, Kathryn Jackson, Adam Pah, Satyender Goel, Jorn Boehnke, John Eric Humphries, Scott Duke Kominers and et al.
Objective
To design and implement a tool that creates a secure, privacy preserving linkage of electronic health record (EHR) data across multiple sites in a large metropolitan area in the United States (Chicago, IL), for use in clinical... View Details
To design and implement a tool that creates a secure, privacy preserving linkage of electronic health record (EHR) data across multiple sites in a large metropolitan area in the United States (Chicago, IL), for use in clinical... View Details
Keywords: Information; Customers; Safety; Rights; Ethics; Entrepreneurship; Health Care and Treatment; Health Industry; Chicago
Kho, Abel, John Cashy, Kathryn Jackson, Adam Pah, Satyender Goel, Jorn Boehnke, John Eric Humphries, Scott Duke Kominers, and et al. "Design and Implementation of a Privacy Preserving Electronic Health Record Linkage Tool in Chicago." Journal of the American Medical Informatics Association 22, no. 5 (September 2015): 1072–1080.
- 2023
- Chapter
Marketing Through the Machine’s Eyes: Image Analytics and Interpretability
By: Shunyuan Zhang, Flora Feng and Kannan Srinivasan
he growth of social media and the sharing economy is generating abundant unstructured image and video data. Computer vision techniques can derive rich insights from unstructured data and can inform recommendations for increasing profits and consumer utility—if only the... View Details
Zhang, Shunyuan, Flora Feng, and Kannan Srinivasan. "Marketing Through the Machine’s Eyes: Image Analytics and Interpretability." Chap. 8 in Artificial Intelligence in Marketing. 20, edited by Naresh K. Malhotra, K. Sudhir, and Olivier Toubia, 217–238. Review of Marketing Research. Emerald Publishing Limited, 2023.
- Summer 2017
- Article
Copyright Enforcement: Evidence from Two Field Experiments
By: Hong Luo and Julie Holland Mortimer
Effective dispute resolution is important for reducing private and social costs. We study how resolution responds to changes in price and communication using a new, extensive dataset of copyright infringement incidences by firms. The data cover two field experiments... View Details
Luo, Hong, and Julie Holland Mortimer. "Copyright Enforcement: Evidence from Two Field Experiments." Journal of Economics & Management Strategy 26, no. 2 (Summer 2017): 499–528.
- October 2006 (Revised April 2007)
- Case
Ayala Corporation
Ayala Corporation is the oldest conglomerate in the Philippines and has been controlled by the Zobel de Ayala family for seven generations. Over the past 25 years, Ayala has evolved from a real estate family business into a highly diversified and professionally managed... View Details
Keywords: Diversification; Family Business; Business Conglomerates; Valuation; Financial Strategy; Public Ownership; Real Estate Industry; Philippines
Villalonga, Belen, Raphael Amit, and Christopher Hartman. "Ayala Corporation." Harvard Business School Case 207-041, October 2006. (Revised April 2007.)
- September 1972 (Revised February 1984)
- Case
Blanchard Importing and Distribution Co., Inc.
By: Paul W. Marshall
Illustration of the two main types of errors resulting from use of the economic order quantity (EOQ) as a tool in production scheduling. Designed to permit class discussion to begin with a consideration of one common type of mistake, errors in calculation of the EOQ... View Details
Marshall, Paul W. "Blanchard Importing and Distribution Co., Inc." Harvard Business School Case 673-033, September 1972. (Revised February 1984.)
- 2022
- Working Paper
The Disagreement Problem in Explainable Machine Learning: A Practitioner's Perspective
By: Satyapriya Krishna, Tessa Han, Alex Gu, Javin Pombra, Shahin Jabbari, Steven Wu and Himabindu Lakkaraju
As various post hoc explanation methods are increasingly being leveraged to explain complex models in high-stakes settings, it becomes critical to develop a deeper understanding of if and when the explanations output by these methods disagree with each other, and how... View Details
Krishna, Satyapriya, Tessa Han, Alex Gu, Javin Pombra, Shahin Jabbari, Steven Wu, and Himabindu Lakkaraju. "The Disagreement Problem in Explainable Machine Learning: A Practitioner's Perspective." Working Paper, 2022.
- 27 Feb 2018
- First Look
First Look at New Research and Ideas, February 27, 2018
Review Firm Turnover and the Return of Racial Establishment Segregation By: Ferguson, John-Paul, and Rembrand Koning Abstract—Racial segregation between American workplaces is greater today than it was a generation ago. This increase has... View Details
Keywords: Sean Silverthorne
- 2023
- Article
Experimental Evaluation of Individualized Treatment Rules
By: Kosuke Imai and Michael Lingzhi Li
The increasing availability of individual-level data has led to numerous applications of individualized (or personalized) treatment rules (ITRs). Policy makers often wish to empirically evaluate ITRs and compare their relative performance before implementing them in a... View Details
Keywords: Causal Inference; Heterogeneous Treatment Effects; Precision Medicine; Uplift Modeling; Analytics and Data Science; AI and Machine Learning
Imai, Kosuke, and Michael Lingzhi Li. "Experimental Evaluation of Individualized Treatment Rules." Journal of the American Statistical Association 118, no. 541 (2023): 242–256.
- Forthcoming
- Article
Slowly Varying Regression Under Sparsity
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Michael Lingzhi Li and Omar Skali Lami
We consider the problem of parameter estimation in slowly varying regression models with sparsity constraints. We formulate the problem as a mixed integer optimization problem and demonstrate that it can be reformulated exactly as a binary convex optimization problem... View Details
Bertsimas, Dimitris, Vassilis Digalakis Jr, Michael Lingzhi Li, and Omar Skali Lami. "Slowly Varying Regression Under Sparsity." Operations Research (forthcoming). (Pre-published online March 27, 2024.)
- 2021
- Working Paper
Property Rights and Urban Form
By: Simeon Djankov, Edward L. Glaeser, Valeria Perotti and Andrei Shleifer
How do the different elements in the standard bundle of property rights, including those of possession and transfer, influence the shape of cities? This paper incorporates insecure property rights into a standard model of urban land prices and density, and makes... View Details
Djankov, Simeon, Edward L. Glaeser, Valeria Perotti, and Andrei Shleifer. "Property Rights and Urban Form." NBER Working Paper Series, No. 28793, May 2021.
- May 2011
- Article
Race at the Top: How Companies Shape the Inclusion of African Americans on Their Boards in Response to Institutional Pressures
By: Clayton S. Rose and William T. Bielby
Drawing on institutionalist theory, we conceptualize the racial composition of the boards of directors of large American companies as shaped in response to social and political norms. We use new longitudinal and cross-sectional data to test hypotheses about factors... View Details
Keywords: Leadership; Governing and Advisory Boards; Race; Mathematical Methods; Government and Politics; Public Ownership; United States
Rose, Clayton S., and William T. Bielby. "Race at the Top: How Companies Shape the Inclusion of African Americans on Their Boards in Response to Institutional Pressures." Social Science Research 40, no. 3 (May 2011): 841–859.
- August 2021
- Article
Information Seeding and Knowledge Production in Online Communities: Evidence from OpenStreetMap
By: Abhishek Nagaraj
The wild success of a few online communities (like Wikipedia) has obscured the fact that most attempts at forming such communities fail. This study evaluates information seeding, an early-stage intervention to bootstrap online communities that enables contributors to... View Details
Keywords: Online Communities; Knowledge Production; Crowdsourcing; Innovation; Digitization; Internet and the Web; Digital Platforms; Social and Collaborative Networks; Analytics and Data Science; Knowledge Dissemination
Nagaraj, Abhishek. "Information Seeding and Knowledge Production in Online Communities: Evidence from OpenStreetMap." Management Science 67, no. 8 (August 2021).
- 2024
- Working Paper
The Cram Method for Efficient Simultaneous Learning and Evaluation
By: Zeyang Jia, Kosuke Imai and Michael Lingzhi Li
We introduce the "cram" method, a general and efficient approach to simultaneous learning and evaluation using a generic machine learning (ML) algorithm. In a single pass of batched data, the proposed method repeatedly trains an ML algorithm and tests its empirical... View Details
Keywords: AI and Machine Learning
Jia, Zeyang, Kosuke Imai, and Michael Lingzhi Li. "The Cram Method for Efficient Simultaneous Learning and Evaluation." Working Paper, March 2024.
- 07 Aug 2000
- Research & Ideas
Rocket Science Retailing
forecasting; supply chain speed; inventory planning; and gathering accurate, available data. The following excerpt from their report in the Harvard Business Review shows how some of these companies are making the most of the data... View Details
- 2019
- Working Paper
Does Public Ownership and Accountability Increase Diversity? Evidence from IPOs
By: Rembrand Koning and John-Paul Ferguson
Does public ownership improve employment diversity? Organizational researchers theorize that increased transparency to regulators and the public should lead firms to conform to legal and social norms—but that social closure and decoupling should preserve the status... View Details
Keywords: IPO; Initial Public Offering; Employees; Diversity; Gender; Race; Entrepreneurship; United States
Koning, Rembrand, and John-Paul Ferguson. "Does Public Ownership and Accountability Increase Diversity? Evidence from IPOs." Harvard Business School Working Paper, No. 19-071, January 2019.
- November 2000
- Case
Wit Capital: Evolution of the Online Investment Bank (B)
Describes the evolution of Wit Capital from its origins as a small brewery to an online investment bank advising both small technology-based companies seeking to raise capital and large companies seeking to acquire Internet companies, as well as offering retail... View Details
Keywords: Internet and the Web; Disruptive Innovation; Service Delivery; Investment Banking; Entrepreneurship
Hallowell, Roger H., and Charles Ruberto. "Wit Capital: Evolution of the Online Investment Bank (B)." Harvard Business School Case 801-265, November 2000.
- 2021
- Working Paper
CEO Activism, Consumer Polarization, and Firm Performance
By: Young Hou and Christopher W. Poliquin
CEOs are increasingly engaging in activism on controversial social and political issues that do not directly affect their businesses. Simultaneously, the general public is increasingly polarized. We examine how CEO support for gun control after two mass shootings... View Details
Keywords: CEO Activism; Guns; Polarization; Non-market Strategy; Social Issues; Leadership; Consumer Behavior; Performance
Hou, Young, and Christopher W. Poliquin. "CEO Activism, Consumer Polarization, and Firm Performance." Harvard Business School Working Paper, No. 21-106, February 2021.
- 2023
- Working Paper
Culture as a Signal: Evidence from a Natural Field Experiment
By: Wei Cai, Dennis Campbell and Jiehang Yu
The importance of culture as an informal management control system is increasingly acknowledged in academia. While prior research mainly focuses on the value of culture on internal stakeholders (e.g., employees), we examine whether culture serves as a credible signal... View Details
Cai, Wei, Dennis Campbell, and Jiehang Yu. "Culture as a Signal: Evidence from a Natural Field Experiment." SSRN Working Paper Series, No. 4447603, May 2023.