Publications

13 Aug 2001
Lessons from the Classroom

Parents’ Guide to Harvard Business School

experience to students' parents, Narayandas leads a mini-case study of Coca-Cola as it decides whether to deploy a new generation of interactive vending machines. Narayandas also discusses the evolution of the modern enterprise, and the... View Details

Keywords: by Sean Silverthorne

August 2023
Article

Do Rating Agencies Behave Defensively for Higher Risk Issuers?

By: Samuel B. Bonsall IV, Kevin Koharki, Pepa Kraft, Karl A. Muller III and Anywhere Sikochi

We examine whether rating agencies act defensively toward issuers with a higher likelihood of default. We find that agencies' qualitative soft rating adjustments are more accurate as issuers' default risk grows, as evidenced by the adjustments leading to lower Type I... View Details

Keywords: Credit Rating Agencies; Soft Rating Adjustments; Default; Credit; Performance Evaluation; Measurement and Metrics; Financial Institutions; Risk Management

2015
Working Paper

Public R&D Investments and Private-sector Patenting: Evidence from NIH Funding Rules

By: Pierre Azoulay, Joshua S. Graff Zivin, Danielle Li and Bhaven N. Sampat

We quantify the impact of scientific grant funding at the National Institutes of Health (NIH) on patenting by pharmaceutical and biotechnology firms. Our paper makes two contributions. First, we use newly constructed bibliometric data to develop a method for flexibly... View Details

Keywords: Economics Of Science; Patenting; Academic Reserach; NIH; Knowledge Spillovers; Patents; Research; Government and Politics

17 Feb 2003
Research & Ideas

Rating Fund Managers by the Company They Keep

from the Working Paper.Ann Cullen: How is your system different than traditional mutual fund rating systems? Cohen: Our method takes advantage of a wealth of previously unexploited information about fund holdings. Standard metrics rate... View Details

Keywords: by Ann Cullen

Article

Counterfactual Explanations Can Be Manipulated

By: Dylan Slack, Sophie Hilgard, Himabindu Lakkaraju and Sameer Singh

Counterfactual explanations are useful for both generating recourse and auditing fairness between groups. We seek to understand whether adversaries can manipulate counterfactual explanations in an algorithmic recourse setting: if counterfactual explanations indicate... View Details

Keywords: Machine Learning Models; Counterfactual Explanations

May–June 2025
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

Keywords: Mathematical Methods; Analytics and Data Science

2020
Working Paper

Strategic Foresight as Dynamic Capability: A New Lens on Knightian Uncertainty

By: J. Peter Scoblic

This paper proposes to treat strategic foresight as a dynamic capability, providing a new theoretical lens on managerial judgment. Formulating strategy under uncertainty is a central challenge facing the modern firm. Analogy is thought to help managers make sense of... View Details

Keywords: Foresight; Dynamic Capabilities; Managerial Judgment; Risk and Uncertainty; Management; Strategy

20 Oct 2011
Research & Ideas

Getting the Marketing Mix Right

what is called the Invariant Proportion of Substitution (IPS) property, which implies that the proportion of demand generated by taking business away from a competitor is the same, no matter which marketing activity is used. "These... View Details

Keywords: by Dina Gerdeman

November 2011
Article

Social Strategies That Work

By: Mikolaj Jan Piskorski

Although most companies have collected lots of friends and followers on social platforms such as Facebook, few have succeeded in generating profits there. That's because they merely port their digital strategies into social environments by broadcasting their commercial... View Details

Keywords: Social Platforms; Social Strategies; Social and Collaborative Networks; Customers; Relationships; Business Strategy; Profit

Purchase

June–July 2019
Article

A Methodology for Operationalizing Enterprise IT Architecture and Evaluating Its Modifiability

By: Robert Lagerström, Alan MacCormack, David Dreyfus and Carliss Y. Baldwin

Recent contributions to information systems theory suggest that the primary role of a firm’s information technology (IT) architecture is to facilitate, and therefore ensure the continued alignment of a firm’s IT investments with a constantly changing business... View Details

Keywords: Enterprise Architecture; Modularity; Information Systems; Modifiability; Design Structure Matrix

Research Summary

Overview

By: Andy Wu

How can technology entrepreneurs build competitive advantage from the ground up? Professor Andy Wu conducts scholarly research and develops course materials that document how technology entrepreneurs can (1) organize for innovation to create new market opportunities... View Details

Keywords: Strategy; Entrepreneurship; Venture Capital; Growth Management; Organizational Design; Organizational Structure; Technology Platform; Technological Innovation; Information Technology Industry; Retail Industry; Pharmaceutical Industry; Video Game Industry; Media and Broadcasting Industry; United States; China; Southeast Asia; South Asia

13 Feb 2013
Research & Ideas

5 Weight Loss Tips From Behavioral Economists

Weight Loss: A Randomized, Controlled Trial," published in the June 2011 edition of Journal of General Internal Medicine. TIP #3- Fill your backpack with rocks. A research team from Harvard and the University of Central Florida tested the... View Details

Keywords: by Carmen Nobel

30 Dec 2014
Working Paper Summaries

Return on Political Investment in the American Jobs Creation Act of 2004

Keywords: by Hui Chen, Katherine Gunny & Karthik Ramanna

Research Summary

Markets and Market Design

The topic on which I currently spend the most of my research energy is the study of strategic interaction and reputation systems on eBay and similar markets from an applied, market design perspective. The rise of the Internet allowed a whole new generation of markets... View Details

23 Sep 2013
Working Paper Summaries

Applying Random Coefficient Models to Strategy Research: Testing for Firm Heterogeneity, Predicting Firm-Specific Coefficients, and Estimating Strategy Trade-Offs

Keywords: by Juan Alcácer, Wilbur Chung, Ashton Hawk & Gonçalo Pacheco-de-Almeida

November 2011
Article

Ownership Structure and Financial Constraints: Evidence from a Structural Estimation

By: Chen Lin, Yue Ma and Yuhai Xuan

This article examines the impact of the divergence between corporate insiders' control rights and cash-flow rights on firms' external finance constraints via generalized method of moments estimation of an investment Euler equation. Using a large sample of U.S.... View Details

Keywords: Ownership; Social Enterprise; Reputation; Cash Flow; Annuities; Investment; Investment Funds; Financial Reporting; Accounting Audits; Financial Services Industry; United States

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

Keywords: Machine Learning; Information; Sales; Forecasting and Prediction; Social Media