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2024
Article

Neyman Meets Causal Machine Learning: Experimental Evaluation of Individualized Treatment Rules

By: Michael Lingzhi Li and Kosuke Imai

A century ago, Neyman showed how to evaluate the efficacy of treatment using a randomized experiment under a minimal set of assumptions. This classical repeated sampling framework serves as a basis of routine experimental analyses conducted by today’s scientists across... View Details

Keywords: AI and Machine Learning; Research

2020
Working Paper

Design and Analysis of Switchback Experiments

By: Iavor I Bojinov, David Simchi-Levi and Jinglong Zhao

In switchback experiments, a firm sequentially exposes an experimental unit to a random treatment, measures its response, and repeats the procedure for several periods to determine which treatment leads to the best outcome. Although practitioners have widely adopted... View Details

Keywords: Switchback Experiments; Design; Analysis; Mathematical Methods

2022
Working Paper

Product2Vec: Leveraging Representation Learning to Model Consumer Product Choice in Large Assortments

By: Fanglin Chen, Xiao Liu, Davide Proserpio and Isamar Troncoso

We propose a method, Product2Vec, based on representation learning, that can automatically learn latent product attributes that drive consumer choices, to study product-level competition when the number of products is large. We demonstrate Product2Vec’s... View Details

Keywords: Consumer Choice; Consumer Behavior; Competition; Product Marketing

December 2017
Article

Overall Cost Comparison of Gastrointestinal Endoscopic Procedures with Endoscopist- or Anesthesia-Supported Sedation by Activity-Based Costing Techniques

By: Richard A. Helmers, James A. Dilling, Christopher R. Chaffee, Mark V. Larson, Bradly J. Narr, Derek A. Haas and Robert S. Kaplan

Endoscopic/Colonoscopic procedures are done either with gastroenterologist-administered conscious sedation or with anesthesia-administered sedation with propofol. Anesthesia-administered sedation has medical and patient benefits but is more expensive to administer. We... View Details

Keywords: Health Care and Treatment; Cost; Activity Based Costing and Management

August 2000 (Revised August 2003)
Case

Cox Communications, Inc., 1999

This case focuses on how much external financing a firm needs and what securities the firm should issue to raise this financing. Cox Communications is a major player in the cable industry, which is consolidating due to technological changes/capabilities brought about... View Details

Keywords: Change Management; Decision Choices and Conditions; Financing and Loans; Telecommunications Industry

January 2016 (Revised November 2019)
Case

Blackstone at Age 30

By: Josh Lerner, John D. Dionne and Amram Migdal

Since its IPO in 2007 and following the global financial crisis, Blackstone largely outpaced its alternative investment firm peers in assets under management, new business launches, profitability, and market capitalization. Under the leadership of Stephen A.... View Details

Keywords: Business Growth and Maturation; Asset Management; Private Equity; Financial Services Industry; New York (city, NY)

Research Summary

Optimal Heteroskedasticity Autocorrelation Consistent Covariance Estimators for GMM Weighting Matrices

This paper considers the optimal bias-variance tradeoff for estimators of the long run covariance matrix used to generate GMM weighting matrices in time series contexts. Minimum MSE HAC estimators do not yield minimum MSE GMM estimators. Instead, achieving... View Details

May 2020
Article

Inventory Auditing and Replenishment Using Point-of-Sales Data

By: Achal Bassamboo, Antonio Moreno and Ioannis Stamatopoulos

Spoilage, expiration, damage due to employee/customer handling, employee theft, and customer shoplifting usually are not reflected in inventory records. As a result, records often report phantom inventory, i.e., units of good not available for sale. We derive an... View Details

Keywords: Shelf Availability; Inventory Record Inaccuracy; Optimal Replenishment; Retail Analytics; Performance Effectiveness; Analysis; Mathematical Methods

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August 2005 (Revised April 2014)
Teaching Note

Innocents Abroad: Currencies and International Stock Returns

By: Mihir A. Desai, Kathleen Luchs, Elizabeth A. Meyer and Mark Veblen

What do international stocks contribute to the portfolio of a U.S. investor? How do currencies interact with stock price movements in determining the benefits of international diversification? This case helps students compare the risks and returns of foreign stock... View Details

Research Summary

Hedging Asian Options: Closed-Form Solutions Using the Malliavin Calculus

Hedging path-dependent options requires non-standard tools because the price processes no longer have smooth stochastic differentials. I show how the Malliavin calculus can be used to overcome the specific difficulties introduced by the averaging behavior of... View Details

29 Apr 2009
News

Economic Recovery

2014
Working Paper

Non-Adherence in Health Care: A Positive and Normative Analysis

By: Mark Egan and Tomas J. Philipson

Non-adherence in health care results when a patient does not initiate or continue care that a provider has recommended. Previous research identifies non-adherence as a major source of waste in US health care, totaling approximately 2.3% of GDP, and have proposed a... View Details

Keywords: Health Care and Treatment; Behavior; Economics; Analysis; Mathematical Methods

30 Jan 2024
Cold Call Podcast

Can Second-Generation Ethanol Production Help Decarbonize the World?

Keywords: Re: Gunnar Trumbull; Energy

May 2013
Teaching Note

Coca-Cola: Residual Income Valuation

By: Suraj Srinivasan and Edward J. Riedl

Teaching note for a case of the same title that introduces students to the residual income (also known as the abnormal earnings) valuation model using the firm Coca-Cola. Students are provided with the primary financial statements (through fiscal 2010) and forecast... View Details

Keywords: Valuation; United States

Article

The Perils of Proactive Churn Prevention Using Plan Recommendations: Evidence from a Field Experiment

By: Eva Ascarza, Raghuram Iyengar and Martin Schleicher

Facing the issue of increasing customer churn, many service firms have begun recommending pricing plans to their customers. One reason behind this type of retention campaign is that customers who subscribe to a plan suitable for them should be less likely to churn... View Details

Keywords: Churn/retention; Field Experiment; Pricing; Tariff/plan Choice; Targeting; Customer Relationship Management; Price; Performance Effectiveness

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June 2017
Case

AT&T Versus Verizon: A Financial Comparison

By: V.G. Narayanan and Joel L. Heilprin

This case asks students to prepare a report comparing the financial and operating performance of AT&T and Verizon. Taking the perspective of a communications industry analyst, they must also consider the differences between and implications of the companies' business... View Details

Keywords: Financial Statements; Operations; Analysis; Business Model; Accounting; Performance Effectiveness; Telecommunications Industry

June 2017
Article

Conspicuous Consumption of Time: When Busyness and Lack of Leisure Time Become a Status Symbol

By: Silvia Bellezza, Neeru Paharia and Anat Keinan

While research on conspicuous consumption has typically analyzed how people spend money on products that signal status, we investigate conspicuous consumption in relation to time. We argue that a busy and overworked lifestyle, rather than a leisurely lifestyle, has... View Details

Keywords: Status and Position; Perspective; North America; Europe

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Research Summary

The Commercialization of Internet Infrastructure

By: Shane M. Greenstein

Why did commercial Internet service initially develop in some geographical areas and not others? What determines the success of businesses? What determines the value of Internet services? The research stream developed the first analysis of the Internet access... View Details

September 1993 (Revised June 2009)
Case

Mary Kay Cosmetics: Asian Market Entry (A)

By: John A. Quelch

In February 1993, Curran Dandurand, senior vice president of Mary Kay Cosmetics Inc.'s global marketing group, was reflecting on the company's international operations. Mary Kay Cosmetics Inc. products had been sold outside the United States for over 15 years, but by... View Details

Keywords: Globalized Firms and Management; Market Entry and Exit; Operations; Sales; Beauty and Cosmetics Industry; Asia

May 2011
Article

Overconfidence by Bayesian Rational Agents

By: Eric J. Van den Steen

This paper derives two mechanisms through which Bayesian-rational individuals with differing priors will tend to be relatively overconfident about their estimates and predictions, in the sense of overestimating the precision of these estimates. The intuition behind one... View Details

Keywords: Decision Choices and Conditions; Forecasting and Prediction; Knowledge Acquisition; Risk Management; Prejudice and Bias

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