Publications

2015
Article

Scalable Detection of Anomalous Patterns With Connectivity Constraints

By: Skyler Speakman, Edward McFowland III and Daniel B. Neill

We present GraphScan, a novel method for detecting arbitrarily shaped connected clusters in graph or network data. Given a graph structure, data observed at each node, and a score function defining the anomalousness of a set of nodes, GraphScan can efficiently and... View Details

Keywords: Biosurveillance; Event Detection; Graph Mining; Scan Statistics; Spatial Scan Statistic

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2019
Working Paper

Thinking Outside the Box (12): The Benefits of Increased Transparency in Employer-Sponsored Health Insurance for the 180 Million Insured

By: Regina E. Herzlinger and Barak D. Richman

Economists have long noted that the tax exclusion of employer-sponsored insurance (ESI) caused workers to purchase health plans that differ in price and other characteristics from those they would otherwise choose for themselves. We explore the short-term and long-term... View Details

Keywords: After-tax Income; Consumer-driven Health Care; Health Care Costs; Health Insurance; Income Inequality; Tax Policy; Health Care and Treatment; Cost; Insurance; Income; Equality and Inequality; Taxation; Policy; United States

March 2022
Article

Where to Locate COVID-19 Mass Vaccination Facilities?

By: Dimitris Bertsimas, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li and Alessandro Previero

The outbreak of COVID-19 led to a record-breaking race to develop a vaccine. However, the limited vaccine capacity creates another massive challenge: how to distribute vaccines to mitigate the near-end impact of the pandemic? In the United States in particular, the new... View Details

Keywords: Vaccines; COVID-19; Health Care and Treatment; Health Pandemics; Performance Effectiveness; Analytics and Data Science; Mathematical Methods

Article

Matriarch: A Python Library for Materials Architecture

By: Tristan Giesa, Ravi Jagadeesan, David I. Spivak and Markus J. Buehler

Biological materials, such as proteins, often have a hierarchical structure ranging from basic building blocks at the nanoscale (e.g., amino acids) to assembled structures at the macroscale (e.g., fibers). Current software for materials engineering allows the user to... View Details

Keywords: Building Block; Category Theory; Hierarchical Protein Materials; Molecular Design; Open-Source Software; Structure Creation

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January 2020
Article

Assessing the Safety of Electronic Health Records: A National Longitudinal Study of Medication-related Decision Support

By: A Jay Holmgren, Zoe Co, Lisa Newmark, Melissa Danforth, David Classen and David Bates

Background Electronic health records (EHR) can improve safety via computerised physician order entry with clinical decision support, designed in part to alert providers and prevent potential adverse drug events at entry and before they reach the patient.... View Details

Keywords: Hospital; Electronic Health Records; Health Care and Treatment; Information Technology; Safety; Performance; Quality; Performance Improvement

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15 Aug 2023
HBS Case

(Virtual) Reality Check: How Long Before We Live in the 'Metaverse'?

coordinating all the pieces of the ecosystem,” he says. “It's not just a matter of a headset. You also have to have content like games or simulations or social media interaction platforms. We still haven't seen what that killer app is... View Details

Keywords: by Jay Fitzgerald; Technology; Computer; Information Technology

29 Nov 2022
Research & Ideas

How Much More Would Holiday Shoppers Pay to Wear Something Rare?

we explain this finding is through social influences,” Farronato says. “I can now go around and show off an item that is recognizable to my friends, but also hard to get.” Paying a premium to be trendy The researchers ran simulations to... View Details

Keywords: by Michael Blanding; Retail

18 Jun 2024
Research & Ideas

Central Banks Missed Inflation Red Flags. This Pricing Model Could Help.

pandemic- and Ukraine-related supplier disruptions. They followed the frequency and daily price changes on almost 585,000 products from 58 companies in Western Europe and the United States. Using that data, researchers simulated what... View Details

Keywords: by Rachel Layne; Financial Services; Banking

2011
Working Paper

Fairness, Efficiency and Flexibility in Organ Allocation for Kidney Transplantation

By: Dimitris Bertsimas, Vivek F. Farias and Nikolaos Trichakis

We propose a scalable, data-driven method for designing national policies for the allocation of deceased donor kidneys to patients on a waiting list, in a fair and efficient way. We focus on policies that have the same form as the one currently used in the U.S. In... View Details

Keywords: Fairness; Policy; Health Disorders; Marketplace Matching; Performance Effectiveness; Rank and Position; Health Industry; United States

October–December 2022
Article

Achieving Reliable Causal Inference with Data-Mined Variables: A Random Forest Approach to the Measurement Error Problem

By: Mochen Yang, Edward McFowland III, Gordon Burtch and Gediminas Adomavicius

Combining machine learning with econometric analysis is becoming increasingly prevalent in both research and practice. A common empirical strategy involves the application of predictive modeling techniques to "mine" variables of interest from available data, followed... View Details

Keywords: Machine Learning; Econometric Analysis; Instrumental Variable; Random Forest; Causal Inference; AI and Machine Learning; Forecasting and Prediction

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2021
Working Paper

Supply- and Demand-Side Effects in Performance Appraisals: The Role of Gender and Race

By: Iris Bohnet, Oliver P. Hauser and Ariella Kristal

Performance reviews in firms are common but controversial. Managers’ subjective appraisals of their employees’ performance and employees’ self-evaluations might be affected by demographic characteristics, interact with each other as self-evaluations are typically... View Details

Keywords: Performance Appraisals; Gender; Race; Performance Evaluation

12 Feb 2018
Research & Ideas

Customers at the Back of the Line Are Anxious—Can You Keep Them from Leaving?

simulation to quiz respondents about their anxieties while waiting in line. (From Last Place Aversion in Queues) Respondents were told they would be paid 50 cents to answer a survey that took several minutes to complete. Before they could... View Details

Keywords: by Michael Blanding; Retail; Service

2013
Dissertation

Designing Freemium: A Model of Consumer Usage, Upgrade, and Referral Dynamics

By: Clarence Lee, Vineet Kumar and Sunil Gupta

Abstract. Over the past decade "freemium" (free + premium) has become the dominant business model among internet start-ups for its ability to acquire and monetize a large install-base with limited marketing resources. Freemium is a hybrid strategy where a firm offers... View Details

Keywords: Discrete-Continuous Choice Dynamic Structural Models; Bayesian Estimation; Word-of-Mouth; Digital Services; Freemium; Entrepreneurship; Business Model; Motivation and Incentives; Marketing Strategy; Internet and the Web; Consumer Behavior; Marketing Reference Programs; Business Startups

24 Aug 2012
Working Paper Summaries

Equalizing Outcomes vs. Equalizing Opportunities: Optimal Taxation when Children’s Abilities Depend on Parents’ Resources

Keywords: by Alexander Gelber & Matthew Weinzierl

30 May 2023
Research & Ideas

Can AI Predict Whether Shoppers Would Pick Crest or Colgate?

commercially available version of GPT-3 to elicit thousands of simulated customer responses and found that AI can produce demand patterns that resemble those of human studies. “Utilizing this tool, which is in some ways a consumer... View Details

Keywords: by Kristen Senz

07 Jul 2019
HBS Case

Walmart's Workforce of the Future

first year. “There’s so much to unpack in the choices that Walmart is making,” Kerr says, remarking that management has also introduced virtual reality goggles to train employees as well as an app, Spark City, that uses a game-type View Details

Keywords: by Julia Hanna; Retail

May 2021
Article

Value-Based Healthcare in Urology: A Collaborative Review

By: Chanan Reitblat, Paul A. Bain, Michael E. Porter, David N. Bernstein, Thomas W. Feeley, Markus Graefen, Santosh Iyer, Matthew J. Resnick, C.J. Stimson, Quoc-Dien Trinh and Boris Gershman

Context:
In response to growing concerns over rising costs and major variation in quality, improving value for patients has been proposed as a fundamentally new strategy for how healthcare should be delivered, measured, and... View Details

Keywords: Value-based Healthcare; Integrated Practice Units; Outcome Measurement; Time-Driven Activity-Based Costing; Health Care and Treatment; Value; Cost Management; Strategy; Outcome or Result; Measurement and Metrics

Article

National Trends in the Safety Performance of Electronic Health Record Systems From 2009 to 2018

By: David Classen, A Jay Holmgren, Zoe Co, Lisa Newmark, Diane Seger, Melissa Danforth and David Bates

Importance Despite the broad adoption of electronic health record (EHR) systems across the continuum of care, safety problems persist. Objective To measure the safety performance of operational EHRs in hospitals across the country during a 10-year period. Design,... View Details

Keywords: Electronic Health Record Systems; Health Care and Treatment; Information Technology; Performance; Safety; Measurement and Metrics; United States