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Show Results For
- All HBS Web
(1,117)
- People (1)
- News (169)
- Research (614)
- Events (17)
- Multimedia (5)
- Faculty Publications (371)
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- 2023
- Working Paper
An Experimental Design for Anytime-Valid Causal Inference on Multi-Armed Bandits
By: Biyonka Liang and Iavor I. Bojinov
Typically, multi-armed bandit (MAB) experiments are analyzed at the end of the study and thus require the analyst to specify a fixed sample size in advance. However, in many online learning applications, it is advantageous to continuously produce inference on the... View Details
Liang, Biyonka, and Iavor I. Bojinov. "An Experimental Design for Anytime-Valid Causal Inference on Multi-Armed Bandits." Harvard Business School Working Paper, No. 24-057, March 2024.
- June 2020
- Article
Real-time Data from Mobile Platforms to Evaluate Sustainable Transportation Infrastructure
By: Omar Isaac Asensio, Kevin Alvarez, Arielle Dror, Emerson Wenzel, Catharina Hollauer and Sooji Ha
By displacing gasoline and diesel fuels, electric cars and fleets reduce emissions from the transportation sector, thus offering important public health benefits. However, public confidence in the reliability of charging infrastructure remains a fundamental barrier to... View Details
Keywords: Environmental Sustainability; Transportation; Infrastructure; Behavior; AI and Machine Learning; Demand and Consumers
Asensio, Omar Isaac, Kevin Alvarez, Arielle Dror, Emerson Wenzel, Catharina Hollauer, and Sooji Ha. "Real-time Data from Mobile Platforms to Evaluate Sustainable Transportation Infrastructure." Nature Sustainability 3, no. 6 (June 2020): 463–471.
- October 1, 2021
- Article
An Evaluation of Cross-efficiency Methods: With an Application to Warehouse Performance.
By: B.M. Balk, M.R. De Koster, Christian Kaps and J.L. Zofio
Cross-efficiency measurement is an extension of Data Envelopment Analysis that allows for tie-breaking ranking of the Decision Making Units (DMUs) using all the peer evaluations. In this article we examine the theory of cross-efficiency measurement by comparing a... View Details
Keywords: Efficiency Analysis; Performance Benchmarking; Warehousing; Analytics and Data Science; Performance Evaluation; Measurement and Metrics; Mathematical Methods
Balk, B.M., M.R. De Koster, Christian Kaps, and J.L. Zofio. "An Evaluation of Cross-efficiency Methods: With an Application to Warehouse Performance." Art. 126261. Applied Mathematics and Computation 406 (October 1, 2021).
- 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
Rajkumar, Karthik, Guillaume Saint-Jacques, Iavor I. Bojinov, Erik Brynjolfsson, and Sinan Aral. "A Causal Test of the Strength of Weak Ties." Science 377, no. 6612 (September 16, 2022).
- September 1990
- Article
Competition on Many Fronts: A Stackelberg Signaling Equilibrium
By: Jerry R. Green and Jean-Jacques Laffont
An economic agent, the incumbent, is operating in many environments at the same time. These may be locations, markets, or specific activities. He is informed of the particular conditions relevant to each situation. His action in each case is observable by another... View Details
Green, Jerry R., and Jean-Jacques Laffont. "Competition on Many Fronts: A Stackelberg Signaling Equilibrium." Games and Economic Behavior 2, no. 3 (September 1990): 247–272.
- 13 Jan 2003
- Research & Ideas
The Subconscious Mind of the Consumer (And How To Reach It)
of such interviews can be used to design more comprehensive surveys. And properly designed surveys, when subjected to careful statistical analyses, can yield further insights into unconscious consumer thinking. Q: At what point in the... View Details
Keywords: by Manda Mahoney
- 01 Nov 2021
- What Do You Think?
How Long Does It Take to Improve an Organization’s Culture?
consultants who provide advice on changing an organization’s culture generally estimate that the chances of success are low, typically one in three or four attempts. Those odds aren’t encouraging. But what isn’t clear in those statistics... View Details
Keywords: by James Heskett
- October 2007
- Article
The Effectiveness of Pre-Release Advertising for Motion Pictures: An Empirical Investigation Using a Simulated Market
By: Anita Elberse and Bharat N. Anand
One of the most visible and publicized trends in the movie industry is the escalation in movie advertising expenditures over time. Yet, the returns to movie advertising are poorly understood. The main reason is that disentangling the causal effect of advertising on... View Details
Keywords: Advertising; Stocks; Investment Return; Price; Revenue; Quality; Mathematical Methods; Motion Pictures and Video Industry
Elberse, Anita, and Bharat N. Anand. "The Effectiveness of Pre-Release Advertising for Motion Pictures: An Empirical Investigation Using a Simulated Market." Information Economics and Policy 19, nos. 3-4 (October 2007): 319–343. (Special Issue on Economics of the Media.)
- 26 Jul 2023
- Research & Ideas
STEM Needs More Women. Recruiters Often Keep Them Out
that male prospects are more likely to be a positive signal compared to your female prospects, then you may try and exhaust the male prospects in your queue before you get to your female ones,” Lane adds. "Because you're trying to call and you're also trying to... View Details
Keywords: by Rachel Layne
- September–October 2013
- Article
The Dynamic Advertising Effect of Collegiate Athletics
By: Doug J. Chung
I measure the spillover effect of intercollegiate athletics on the quantity and quality of applicants to institutions of higher education in the United States, popularly known as the "Flutie Effect." I treat athletic success as a stock of goodwill that decays over... View Details
Keywords: Choice Modeling; Entertainment Marketing; Heterogeneity; Panel Data; Structural Modeling; Rights; Analytics and Data Science; Higher Education; Ethics; Consumer Behavior; Advertising; Sports; Advertising Industry; Education Industry
Chung, Doug J. "The Dynamic Advertising Effect of Collegiate Athletics." Marketing Science 32, no. 5 (September–October 2013): 679–698. (Lead article. Featured in HBS Working Knowledge.)
- August 2004
- Article
Inequality and Happiness: Are Europeans and Americans Different?
By: Rafael Di Tella, Alberto Alesina and Robert MacCulloch
We study the effect of the level of inequality in society on individual well-being using a total of 123,668 answers to a survey question about “happiness”. We find that individuals have a lower tendency to report themselves happy when inequality is high, even after... View Details
Di Tella, Rafael, Alberto Alesina, and Robert MacCulloch. "Inequality and Happiness: Are Europeans and Americans Different?" Journal of Public Economics 88, nos. 9-10 (August 2004): 2009–42.
- Research Summary
Competitive Strategy
Porter is engaged in a major new body of work on the theoretical foundations of competitive positioning and the underpinnings of sustainable competitive advantage. This research highlights the distinction between positioning and operational effectiveness; the... View Details
- October 2018
- Article
The Operational Value of Social Media Information
By: Ruomeng Cui, Santiago Gallino, Antonio Moreno and Dennis J. Zhang
While the value of using social media information has been established in multiple business contexts, the field of operations and supply chain management have not yet explored the possibilities it offers in improving firms' operational decisions. This study attempts to... View Details
Cui, Ruomeng, Santiago Gallino, Antonio Moreno, and Dennis J. Zhang. "The Operational Value of Social Media Information." Special Issue on Big Data in Supply Chain Management. Production and Operations Management 27, no. 10 (October 2018): 1749–1774.
- 27 Sep 2011
- Working Paper Summaries
Salience in Quality Disclosure: Evidence from the U.S. News College Rankings
- August 2015 (Revised May 2017)
- Case
TSG Hoffenheim: Football in the Age of Analytics
By: Feng Zhu, Karim R. Lakhani, Sascha L. Schmidt and Kerry Herman
In 2015, Dietmar Hopp, owner of Germany's Bundesliga football team TSG Hoffenheim and co-founder of the global enterprise software company SAP, was considering how to ensure long-term sustainability and competitiveness for TSG Hoffenheim. While historically a small... View Details
Zhu, Feng, Karim R. Lakhani, Sascha L. Schmidt, and Kerry Herman. "TSG Hoffenheim: Football in the Age of Analytics." Harvard Business School Case 616-010, August 2015. (Revised May 2017.)
- 2013
- Working Paper
Increased Speed Equals Increased Wait: The Impact of a Reduction in Emergency Department Ultrasound Order Processing Time
By: Jillian Berry Jaeker, Anita L. Tucker and Michael H. Lee
We exploit an exogenous process change at two emergency departments (EDs) within a health system to test the theory that increasing capacity in a discretionary work setting increases wait times due to additional services being provided to customers as a consequence of... View Details
Keywords: Technology; Demand and Consumers; Service Delivery; Health Care and Treatment; Business Processes; Health Industry
Berry Jaeker, Jillian, Anita L. Tucker, and Michael H. Lee. "Increased Speed Equals Increased Wait: The Impact of a Reduction in Emergency Department Ultrasound Order Processing Time." Harvard Business School Working Paper, No. 14-033, October 2013.
- 05 Apr 2011
- Working Paper Summaries
The Power of Political Voice: Women’s Political Representation and Crime in India
- 2023
- Working Paper
The Irredeemability of the Past: Determinants of Reconciliation and Revenge in Post-Conflict Settings
By: Kristen Kao, Kristin Fabbe and Michael Bang Petersen
In the aftermath of violent conflict, identifying former enemy collaborators versus
innocent bystanders forced to flee violence is difficult. In post-conflict settings,
internally displaced persons (IDPs) risk becoming stigmatized and face difficulties... View Details
Keywords: Conflict and Resolution; War; Refugees; Moral Sensibility; Behavior; Public Opinion; Lawfulness; Iraq
Kao, Kristen, Kristin Fabbe, and Michael Bang Petersen. "The Irredeemability of the Past: Determinants of Reconciliation and Revenge in Post-Conflict Settings." Harvard Business School Working Paper, No. 24-011, August 2023.
- January 2020
- Article
The Market Reacts Quickly: Changes in Paclitaxel Vascular Device Purchasing Within the Ascension Healthcare System
By: Peter P. Monteleone, Subhash Banerjee, Priya Kothapalli, Ariel Dora Stern, Daniel Fehder, Ron Ginor, Dominic Vollmar, Edward T. A. Fry and Mark J. Pirwitz
Background. A meta-analysis of trials in endovascular therapy suggested an increased mortality associated with treatment exposure to paclitaxel. Multiple publications and corrections of prior data were performed, and the United States Food and Drug Administration has... View Details
Monteleone, Peter P., Subhash Banerjee, Priya Kothapalli, Ariel Dora Stern, Daniel Fehder, Ron Ginor, Dominic Vollmar, Edward T. A. Fry, and Mark J. Pirwitz. "The Market Reacts Quickly: Changes in Paclitaxel Vascular Device Purchasing Within the Ascension Healthcare System." Journal of Invasive Cardiology 32, no. 1 (January 2020).
- Research Summary
The Competitive Advantage of Nations and Regions
Michael E. Porter continues to extend his study first reported in The Competitive Advantage of Nations. Porter has published books and studies of other countries, states, and cities, including Canada, New Zealand, Portugal, the Commonwealth of Massachusetts,... View Details