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Show Results For
- All HBS Web
(7,821)
- News (2,202)
- Research (4,910)
- Events (40)
- Multimedia (226)
- Faculty Publications (4,037)
- August 2020 (Revised September 2020)
- Technical Note
Assessing Prediction Accuracy of Machine Learning Models
The note introduces a variety of methods to assess the accuracy of machine learning prediction models. The note begins by briefly introducing machine learning, overfitting, training versus test datasets, and cross validation. The following accuracy metrics and tools... View Details
Keywords: Machine Learning; Statistics; Econometric Analyses; Experimental Methods; Data Analysis; Data Analytics; Forecasting and Prediction; Analytics and Data Science; Analysis; Mathematical Methods
Toffel, Michael W., Natalie Epstein, Kris Ferreira, and Yael Grushka-Cockayne. "Assessing Prediction Accuracy of Machine Learning Models." Harvard Business School Technical Note 621-045, August 2020. (Revised September 2020.)
- March 2020 (Revised April 2020)
- Case
Dexai Prepares to Put 'Alfred' to the Test
By: Lena G. Goldberg, Michael S. Kaufman and Joseph A. Paul
- Article
The Feeling of Not Knowing It All
By: Haiyang Yang, Ziv Carmon, Dan Ariely and Michael I. Norton
How do consumers assess their mastery of knowledge they have learned? We explore this question by investigating a common knowledge consumption situation: encountering opportunities for further learning. We argue and show that such opportunities can trigger a... View Details
Keywords: Knowledge Consumption; Consumption Of Learning; Judgment Of Knowledge; Feeling Ofknowing; Confidence In Knowledge; WYSIATI; FONKIA; Knowledge Acquisition; Learning; Perception
Yang, Haiyang, Ziv Carmon, Dan Ariely, and Michael I. Norton. "The Feeling of Not Knowing It All." Journal of Consumer Psychology 29, no. 3 (July 2019): 455–462.
- November 2019
- Article
Procedural Justice and the Risks of Consumer Voting
By: Tami Kim, Leslie John, Todd Rogers and Michael I. Norton
Firms are increasingly giving consumers the vote. Eight studies demonstrate that when firms empower consumers to vote, consumers infer a series of implicit promises—even in the absence of explicit promises. We identify three implicit promises to which consumers react... View Details
Keywords: Consumer Empowerment; Procedural Justice; Promises; Customer Relationship Management; Voting; Perception; Fairness; Risk Management
Kim, Tami, Leslie John, Todd Rogers, and Michael I. Norton. "Procedural Justice and the Risks of Consumer Voting." Management Science 65, no. 11 (November 2019): 5234–5251.
- February 2017 (Revised August 2018)
- Case
Sarah Powers at Automated Precision Products
By: Jeffrey T. Polzer, Michael Norris, Julia Kelley and Kristina Tobio
In 2017, Sarah Powers, VP of Sales at an automation hardware firm, is trying to understand why some members of her sales team have been underperforming. She is tasked with analyzing her firm’s email and calendar data to try to find relationships between communications... View Details
Keywords: People Analytics; Sales Attainment; Communication Networks; Data; Human Resources; Business Processes; Sales; Communication; Analytics and Data Science; Analysis; Industrial Products Industry; Manufacturing Industry; United States
Polzer, Jeffrey T., Michael Norris, Julia Kelley, and Kristina Tobio. "Sarah Powers at Automated Precision Products." Harvard Business School Case 417-072, February 2017. (Revised August 2018.)
- Article
Managing Healthcare Costs and Value
By: Robert S. Kaplan, Michael E. Porter and Mark L. Frigo
Rising health care costs are a major global challenge. A number of factors contribute to this trend, including aging populations and medical technology. But an underlying and misunderstood source of health care’s escalating costs has been the inability of health care... View Details
Kaplan, Robert S., Michael E. Porter, and Mark L. Frigo. "Managing Healthcare Costs and Value." Strategic Finance 98, no. 7 (January 2017): 24–33.
- 2019
- Working Paper
Improving Working Conditions in Global Supply Chains: The Role of Institutional Environments and Monitoring Program Design
By: Jodi L. Short, Michael W. Toffel and Andrea R. Hugill
Activism seeking to improve labor conditions in global supply chains has led transnational corporations to adopt codes of conduct and monitor suppliers for compliance, but it is unclear whether these formal organizational structures raise labor standards. Drawing on... View Details
Keywords: Monitoring; Supplier Relationship; Sustainability; Sustainability Management; Sustainable Operations; Sustainable Supply Chains; NGO; Globalization; Corporate Accountability; Operations; Supply Chain; Supply Chain Management; Labor; Working Conditions; Business Processes; Corporate Social Responsibility and Impact; Performance Evaluation; Safety; Risk and Uncertainty; Apparel and Accessories Industry; Electronics Industry; China; Indonesia; India; Bangladesh
Short, Jodi L., Michael W. Toffel, and Andrea R. Hugill. "Improving Working Conditions in Global Supply Chains: The Role of Institutional Environments and Monitoring Program Design." Harvard Business School Working Paper, No. 17-001, July 2016. (Revised September 2019. Formerly titled "Code Contingencies: Designing Monitoring Regimes to Promote Improvement in Supply Chain Working Conditions" and "Beyond Symbolic Responses to Private Politics.")
- Article
Crowdsourcing City Government: Using Tournaments to Improve Inspection Accuracy
By: Edward Glaeser, Andrew Hillis, Scott Duke Kominers and Michael Luca
The proliferation of big data makes it possible to better target city services like hygiene inspections, but city governments rarely have the in-house talent needed for developing prediction algorithms. Cities could hire consultants, but a cheaper alternative is to... View Details
Keywords: User-generated Content; Operations; Tournaments; Policy-making; Machine Learning; Online Platforms; Analytics and Data Science; Mathematical Methods; City; Infrastructure; Business Processes; Government and Politics
Glaeser, Edward, Andrew Hillis, Scott Duke Kominers, and Michael Luca. "Crowdsourcing City Government: Using Tournaments to Improve Inspection Accuracy." American Economic Review: Papers and Proceedings 106, no. 5 (May 2016): 114–118.
- Article
How Elastic Are Preferences for Redistribution? Evidence from Randomized Survey Experiments
By: Ilyana Kuziemko, Michael I. Norton, Emmanuel Saez and Stefanie Stantcheva
We analyze randomized online survey experiments providing interactive, customized information on U.S. income inequality, the link between top income tax rates and economic growth, and the estate tax. The treatment has large effects on views about inequality but only... View Details
Kuziemko, Ilyana, Michael I. Norton, Emmanuel Saez, and Stefanie Stantcheva. "How Elastic Are Preferences for Redistribution? Evidence from Randomized Survey Experiments." American Economic Review 105, no. 4 (April 2015): 1478–1508.
- March 2013
- Other Article
Redesigning Primary Care: A Strategic Vision to Improve Value by Organizing Around Patients' Needs
By: Michael E. Porter, Erika A. Pabo and Thomas H. Lee
Primary care in the United States currently struggles to attract new physicians and to garner investments in infrastructure required to meet patients' needs. We believe that the absence of a robust overall strategy for the entire spectrum of primary care is a... View Details
Keywords: Health
Porter, Michael E., Erika A. Pabo, and Thomas H. Lee. "Redesigning Primary Care: A Strategic Vision to Improve Value by Organizing Around Patients' Needs." Health Affairs 32, no. 3 (March 2013): 516–525.
- 2013
- Article
Where Not to Eat? Improving Public Policy by Predicting Hygiene Inspections Using Online Reviews
By: Jun Seok Kang, Polina Kuznetsova, Yejin Choi and Michael Luca
Restaurant hygiene inspections are often cited as a success story of public disclosure. Hygiene grades influence customer decisions and serve as an accountability system for restaurants. However, cities (which are responsible for inspections) have limited resources to... View Details
Keywords: Safety; Food; Governance Compliance; Mathematical Methods; Applications and Software; Public Administration Industry; Retail Industry; Food and Beverage Industry
Kang, Jun Seok, Polina Kuznetsova, Yejin Choi, and Michael Luca. "Where Not to Eat? Improving Public Policy by Predicting Hygiene Inspections Using Online Reviews." Proceedings of the Conference on Empirical Methods in Natural Language Processing (2013): 1443–1448.
- May 2013
- Supplement
Hubei Lantian (B)
By: David F. Hawkins, Michael Shih-Ta Chen and Nancy Hua Dai
Hawkins, David F., Michael Shih-Ta Chen, and Nancy Hua Dai. "Hubei Lantian (B)." Harvard Business School Supplement 113-119, May 2013.
- May 18, 2012
- Article
Randomized Government Safety Inspections Reduce Worker Injuries with No Detectable Job Loss
By: David I Levine, Michael W. Toffel and Matthew S. Johnson
Controversy surrounds occupational health and safety regulators, with some observers claiming that workplace regulations damage firms' competitiveness and destroy jobs and others arguing that they make workplaces safer at little cost to employers and employees. We... View Details
Keywords: Regulation; Occupational Safety; Evaluation; Regression; Matching; Difference In Differences; Safety; Health; Working Conditions; Governing Rules, Regulations, and Reforms; Competitive Advantage; Performance; Manufacturing Industry; California
Levine, David I., Michael W. Toffel, and Matthew S. Johnson. "Randomized Government Safety Inspections Reduce Worker Injuries with No Detectable Job Loss." Science 336, no. 6083 (May 18, 2012): 907–911. (Online supplement (appendix). Featured in an article by the head of US OSHA, and in U.S. News & World Report and many other news outlets. Basis of U.S. Congressional testimony on promoting safe workplaces.)
- November 2012
- Article
An Age Penalty in Racial Preferences
By: Deborah A. Small, Devin G. Pope and Michael I. Norton
We document an age penalty in racial discrimination: charitable behavior toward African American children decreases-and negative stereotypical inferences increase-with the age of those children. Using data from an online charity that solicits donations for school... View Details
Keywords: Stereotyping; Charitable Giving; Prejudice; Prosocial Behavior; Philanthropy and Charitable Giving; Age; Race; Prejudice and Bias
Small, Deborah A., Devin G. Pope, and Michael I. Norton. "An Age Penalty in Racial Preferences." Social Psychological & Personality Science 3, no. 6 (November 2012): 730–737.
- 2011
- Working Paper
Discretion Within the Constraints of Opportunity: Gender Homophily and Structure in a Formal Organization
By: Adam M. Kleinbaum, Toby E. Stuart and Michael L. Tushman
Homophily in social relations is widely documented. We know that homophily results from both individual preferences and uneven opportunities for interaction, but how these two mechanisms interact in formal organizations is not well understood. We argue that... View Details
Keywords: Interactive Communication; Analytics and Data Science; Organizational Structure; Partners and Partnerships; Behavior; Internet and the Web; Theory; Information Technology Industry
Kleinbaum, Adam M., Toby E. Stuart, and Michael L. Tushman. "Discretion Within the Constraints of Opportunity: Gender Homophily and Structure in a Formal Organization." Harvard Business School Working Paper, No. 12-050, December 2011.
- June 2012
- Article
Racial Colorblindness: Emergence, Practice, and Implications
By: Evan P. Apfelbaum, Michael I. Norton and Samuel R. Sommers
We examine the pervasive endorsement of racial colorblindness-the belief that racial group membership should not be taken into account or even noticed-as a strategy for managing diversity and intergroup relations. Despite research demonstrating that race is perceived... View Details
Apfelbaum, Evan P., Michael I. Norton, and Samuel R. Sommers. "Racial Colorblindness: Emergence, Practice, and Implications." Current Directions in Psychological Science 21, no. 3 (June 2012): 205–209.
- Article
Deception and Its Detection: Effects of Monetary Incentives and Personal Relationship History
By: Lyn M. Van Swol, Deepak Malhotra and Michael T. Braun
The study examined detection of deception in unsanctioned, consequential lies between either friends or strangers using an ultimatum game. The sender was given an amount of money to divide with the receiver. The receiver did not know the precise amount the sender had... View Details
Van Swol, Lyn M., Deepak Malhotra, and Michael T. Braun. "Deception and Its Detection: Effects of Monetary Incentives and Personal Relationship History." Communication Research 39, no. 2 (April 2012): 217–238.
- January 2011
- Case
Founder-CEO Succession at Acer
By: Noam T. Wasserman, Michael Shih-ta Chen and Keith Chi-ho Wong
Stan Shih, founder-CEO of Acer, Inc., had proactively chosen and transitioned the "perfect" successor as CEO, but was now faced with major problems. Over the last two years, his heir apparent, Leonard Liu, had made the changes he had been hired to make, including... View Details
Keywords: Business Startups; Entrepreneurship; Cross-Cultural and Cross-Border Issues; Management Style; Management Succession; Organizational Change and Adaptation; Organizational Culture; Organizational Structure; Conflict Management
Wasserman, Noam T., Michael Shih-ta Chen, and Keith Chi-ho Wong. "Founder-CEO Succession at Acer." Harvard Business School Case 811-062, January 2011.
- June 2010 (Revised August 2013)
- Case
Remaking Singapore
By: Michael E. Porter, Boon Siong Neo and Christian H.M. Ketels
Looking through the lenses of both macro and micro economic policy, this case examines how Singapore has achieved such stellar success throughout its history, from independence through 2008. The case discusses the different policy choices the Singaporean government has... View Details
Keywords: History; Development Economics; Industry Clusters; Competitive Advantage; Policy; Economic Growth; Microeconomics; Government and Politics; Macroeconomics; Singapore
Porter, Michael E., Boon Siong Neo, and Christian H.M. Ketels. "Remaking Singapore." Harvard Business School Case 710-483, June 2010. (Revised August 2013.)
- Article
From Wealth to Well-Being? Money Matters, but Less than People Think
By: Lara B. Aknin, Michael I. Norton and Elizabeth W. Dunn
While numerous studies have documented the modest (though reliable) link between household income and well-being, we examined the accuracy of laypeople's intuitions about this relationship by asking people from across the income spectrum to report their own... View Details
Aknin, Lara B., Michael I. Norton, and Elizabeth W. Dunn. "From Wealth to Well-Being? Money Matters, but Less than People Think." Journal of Positive Psychology 4, no. 6 (2009): 523–527.