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- All HBS Web
(292)
- News (77)
- Research (160)
- Events (4)
- Multimedia (1)
- Faculty Publications (24)
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- March 2020
- Article
Diagnosing Missing Always at Random in Multivariate Data
By: Iavor I. Bojinov, Natesh S. Pillai and Donald B. Rubin
Models for analyzing multivariate data sets with missing values require strong, often assessable, assumptions. The most common of these is that the mechanism that created the missing data is ignorable—a twofold assumption dependent on the mode of inference. The first... View Details
Keywords: Missing Data; Diagnostic Tools; Sensitivity Analysis; Hypothesis Testing; Missing At Random; Row Exchangeability; Analytics and Data Science; Mathematical Methods
Bojinov, Iavor I., Natesh S. Pillai, and Donald B. Rubin. "Diagnosing Missing Always at Random in Multivariate Data." Biometrika 107, no. 1 (March 2020): 246–253.
- August 2021
- Article
Multiple Imputation Using Gaussian Copulas
By: F.M. Hollenbach, I. Bojinov, S. Minhas, N.W. Metternich, M.D. Ward and A. Volfovsky
Missing observations are pervasive throughout empirical research, especially in the social sciences. Despite multiple approaches to dealing adequately with missing data, many scholars still fail to address this vital issue. In this paper, we present a simple-to-use... View Details
Hollenbach, F.M., I. Bojinov, S. Minhas, N.W. Metternich, M.D. Ward, and A. Volfovsky. "Multiple Imputation Using Gaussian Copulas." Special Issue on New Quantitative Approaches to Studying Social Inequality. Sociological Methods & Research 50, no. 3 (August 2021): 1259–1283. (0049124118799381.)
- January 2025
- Case
Untapped Global: Financing Africa's Missing Middle
By: Raymond Kluender and Emanuele Colonnelli
In November 2024, Jim Chu, founder and CEO of Untapped Global, faced mounting internal tensions over the company’s strategic direction. Untapped had developed a data-driven revenue-based financing (RBF) model to address the “missing middle” problem—the $5.2 trillion... View Details
Keywords: Social Entrepreneurship; Venture Capital; Working Capital; Private Equity; Financial Strategy; Microfinance; International Finance; Currency Exchange Rate; Profit Sharing; Revenue; Developing Countries and Economies; Economic Growth; Emerging Markets; Mission and Purpose; Small Business; Entrepreneurial Finance; Banking Industry; Financial Services Industry; Information Technology Industry; Technology Industry; Africa; Nigeria; South Africa; Kenya; Uganda; California; San Francisco
Kluender, Raymond, and Emanuele Colonnelli. "Untapped Global: Financing Africa's Missing Middle." Harvard Business School Case 825-056, January 2025.
- 20 Apr 2021
- Working Paper Summaries
Cognitive Biases: Mistakes or Missing Stakes?
- 2019
- White Paper
Impact-Weighted Financial Accounts: The Missing Piece for an Impact Economy
By: George Serafeim, T. Robert Zochowski and Jennifer Downing
Reimagining capitalism is an imperative. We need to create a more inclusive and sustainable form of capitalism that works for every person and the planet. Massive environmental damage, growing income and wealth disparity, stress, and depression within developed... View Details
Keywords: Impact-Weighted Accounts; IWAI; Background; Economic Systems; Economy; Corporate Social Responsibility and Impact; Measurement and Metrics; Financial Statements
Serafeim, George, T. Robert Zochowski, and Jennifer Downing. "Impact-Weighted Financial Accounts: The Missing Piece for an Impact Economy." White Paper, Harvard Business School, Boston, MA, September 2019.
- 18 Jun 2024
- Research & Ideas
Central Banks Missed Inflation Red Flags. This Pricing Model Could Help.
doctoral student at the University of Chicago. The ‘state’ of the price gap matters Economists generally use two main data models to detect inflation and predict the pace at which retailers raise prices: time dependent and state... View Details
- 2014
- Working Paper
The Unfairness Trap: A Key Missing Factor in the Economic Theory of Discrimination
By: Jordan I. Siegel, Naomi Kodama and Hanna Halaburda
Prior evidence linking increased female representation in management to corporate performance has been surprisingly mixed, due in part to data limitations and methodological difficulties, and possibly to omission of a fairness factor in the economic theory of... View Details
Siegel, Jordan I., Naomi Kodama, and Hanna Halaburda. "The Unfairness Trap: A Key Missing Factor in the Economic Theory of Discrimination." Harvard Business School Working Paper, No. 13-082, March 2013. (Revised January 2014, June 2014.)
- 09 May 2024
- Research & Ideas
Called Back to the Office? How You Benefit from Ideas You Didn't Know You Were Missing
classrooms, labs, dining halls, and elsewhere on campuses have a unique influence on the course of scientific research, according to the study, coauthored by Eamon Duede, a postdoctoral fellow at the Digital Data Design Institute at... View Details
Keywords: by Ben Rand
- 27 Feb 2023
- Research & Ideas
How One Late Employee Can Hurt Your Business: Data from 25 Million Timecards
authors reach their conclusions by correlating the timesheet records to a host of other data points, including daily store sales, scheduling practices, store traffic, and weather. In conducting their analyses, the researchers created a... View Details
- Teaching Interest
Empirical Technology and Operations Management Course
I taught a set of lectures on "Introduction to Machine Learning for Social Scientists" as part of this required course for first year PhD students. This module familiarizes students with all the basic concepts in machine learning, their implementations, as well as the... View Details
- 10 Apr 2013
- Research & Ideas
Learning Curve: Making the Most of Outsourcing
Companies that outsource merely to shuffle off commodity work to save costs might be missing important opportunities to work with vendors and significantly improve the final product. "When it comes to the outsourcing of many complex... View Details
- 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.
- 2019
- Working Paper
Biometric Monitoring, Service Delivery and Misreporting: Evidence from Healthcare in India
By: Thomas Bossuroy, Clara Delavallade and Vincent Pons
Developing countries increasingly use biometric identification technology in hopes of improving the reliability of administrative information and delivering social services more efficiently. This paper exploits the random placement of biometric tracking devices in... View Details
Keywords: Biometric Technology; Health Care and Treatment; Technological Innovation; Analytics and Data Science; Quality; Performance Improvement; India
Bossuroy, Thomas, Clara Delavallade, and Vincent Pons. "Biometric Monitoring, Service Delivery and Misreporting: Evidence from Healthcare in India." NBER Working Paper Series, No. 26388, October 2019. (Revise and resubmit requested, Review of Economics and Statistics.)
- January 2021 (Revised June 2023)
- Case
Biobot Analytics
In 2017, Newsha Ghaeli and Mariana Matus were deciding whether to leave their labs at the Massachusetts Institute of Technology, put other job opportunities aside, and dive full-time into founding a wastewater analysis start-up, Biobot. Ghaeli, an architect, and Matus,... View Details
Keywords: Entrepreneurship; Information Technology; City; Analytics and Data Science; Personal Development and Career; Technology Industry; Utilities Industry; Health Industry; Information Technology Industry; Information Industry; Biotechnology Industry; United States; Kuwait; Korean Peninsula
Kluender, Raymond, Joshua Krieger, and Mitchell Weiss. "Biobot Analytics." Harvard Business School Case 821-045, January 2021. (Revised June 2023.)
- 23 Oct 2018
- First Look
New Research and Ideas, October 23, 2018
conduct laboratory experiments that explore how gender stereotypes shape beliefs about ability of oneself and others in different categories of knowledge. The data reveal two patterns. First, men’s and women’s beliefs about both oneself... View Details
Keywords: Dina Gerdeman
- Article
Measuring the Scientific Effectiveness of Contact Tracing: Evidence from a Natural Experiment
By: Thiemo Fetzer and Thomas Graeber
Contact tracing has for decades been a cornerstone of the public health approach to epidemics, including Ebola, severe acute respiratory syndrome, and now COVID-19. It has not yet been possible, however, to causally assess the method’s effectiveness using a randomized... View Details
Fetzer, Thiemo, and Thomas Graeber. "Measuring the Scientific Effectiveness of Contact Tracing: Evidence from a Natural Experiment." Proceedings of the National Academy of Sciences 118, no. 33 (August 17, 2021): 1–4.
- 19 Sep 2023
- Research & Ideas
What Chandrayaan-3 Says About India's Entrepreneurial Approach to Space
to me the greatest form of public goods. Now digital public goods are the modern equivalent. Do you know that India uses more data per capita than any country in the world? If you added the per capita data... View Details
- 2010
- Other Unpublished Work
Modeling Passenger Travel and Delays in the National Air Transportation System
Many of the existing methods for evaluating an airline's on-time performance are based on flight-centric measures of delay. However, recent research has demonstrated that passenger delays depend on many factors in addition to flight delays. For instance,... View Details
- 03 May 2023
- Research & Ideas
Why Confronting Racism in AI 'Creates a Better Future for All of Us'
pretty bad. The present is better than 100 years ago and much better than 200 years ago. Today, the tech world is building AI systems and making decisions that will use human inferences and data built on the past. So instead of mimicking... View Details
Keywords: by Barbara DeLollis
- Article
When the Thought Doesn’t Count: The Dynamics of Unhelpful Help in Creative Organizations
By: Colin Fisher, Julianna Pillemer and Teresa Amabile
We’ve all been there. You ask a colleague for help with something, maybe a tricky research design or a difficult student. They agree to help, but their assistance misses its mark. You wonder what happened and, if you turn to existing research and theory, you don’t find... View Details
Fisher, Colin, Julianna Pillemer, and Teresa Amabile. "When the Thought Doesn’t Count: The Dynamics of Unhelpful Help in Creative Organizations." Academy of Management Discoveries (in press). (Pre-published online October 18, 2024.)