Publications

SSRN

07 Jan 2019
Research & Ideas

The Better Way to Forecast the Future

are broader. When Grushka-Cockayne refers to averaging the forecasts, she is not necessarily referring to a mathematical average but any number of ways to combine them. Various methods can include weighting... View Details

Keywords: by Roberta Holland; Air Transportation; Transportation

2010
Book

The New Science of Retailing: How Analytics Are Transforming the Supply Chain and Improving Performance

By: Marshall Fisher and Ananth Raman

Retailers today are drowning in data but lacking in insight: They have huge volumes of information at their disposal. But they're unsure of how to sort through it and use it to make smart decisions. The result? They're struggling with profit-sapping supply chain... View Details

Keywords: Profit; Knowledge Use and Leverage; Logistics; Supply Chain Management; Mathematical Methods; Retail Industry

July 2025
Article

Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers

By: Mengjie Cheng and Shunyuan Zhang

The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on influencers' reputations. We collected a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in... View Details

Keywords: Reputation; Mathematical Methods; Marketing Reference Programs; Social Media; Brands and Branding

October 2001 (Revised October 2017)
Case

Store24 (A): Managing Employee Retention

By: Frances X. Frei and Dennis Campbell

Provides a retailing context in which employee retention strategies are explored through analyzing detailed store-level data. View Details

Keywords: Retention; Management Analysis, Tools, and Techniques; Analytics and Data Science; Strategy; Mathematical Methods; Retail Industry

October 2000 (Revised April 2001)
Case

Cost of Capital at Ameritrade

By: Mark L. Mitchell and Erik Stafford

Ameritrade Holding Corp. is planning large marketing and technology investments to improve the company's competitive position in deep-discount brokerage by taking advantage of emerging economies of scale. In order to evaluate whether the strategy would generate... View Details

Keywords: Developing Countries and Economies; Asset Pricing; Cash Flow; Cost of Capital; Investment; Marketing; Mathematical Methods; Competition; Information Technology; Internet and the Web; Financial Services Industry

Profile

Kiran Gandhi

Berklee, HBS, and MIT students together to discuss problems in the music industry. We’ve modeled our meetings on the Socratic method seen in the HBS classroom: Everyone gets reading material in advance so they can make informed... View Details

Keywords: Entertainment/Media

02 Oct 2017
What Do You Think?

Do Bitcoin and Digital Currency Have a Future?

for market manipulation (and) used as payment method for online crime.” Bitcoin does not have a future as a currency, Turnbull said, because of the cost of operating sufficient computers to collectively document every single transaction.... View Details

Keywords: by James L. Heskett; Financial Services

September 2010 (Revised January 2012)
Case

OPOWER: Increasing Energy Efficiency through Normative Influence (A)

By: Amy J.C. Cuddy, Kyle Todd Doherty and Maarten W. Bos

The case profiles OPOWER, an energy efficiency software company that applies Cialdini's principles of social influence to successfully encourage consumers to reduce their energy usage. OPOWER was co-founded in 2008 by two young Harvard graduates, Dan Yates and Alex... View Details

Keywords: Mathematical Methods; Applications and Software; Attitudes; Entrepreneurship; Energy Conservation; Power and Influence; Growth and Development Strategy; Energy Industry; United States

Web

Entrepreneurial Management Awards & Honors - Faculty & Research

Best Paper Award for “Cognitive Framing and Capability Development at the Federal Bureau of Investigation” with Tiona Zuzul, Ryan Raffaelli, and Jan Rivkin. Ranjay Gulati : Winner of the 2019 Strategic Management Society (SMS) Annual Conference Best Research View Details

September 2010 (Revised December 2010)
Case

Compass Maritime Services, LLC: Valuing Ships

By: Benjamin C. Esty and Albert W. Sheen

Tom Roberts, a founding partner of Compass Maritime Services, a New Jersey-based shipping research and consulting firm, has been asked by a new potential customer in May 2008 for advice on purchasing a capesize bulk carrier. After identifying a suitable ship with his... View Details

Keywords: Decision Choices and Conditions; Judgments; Price; Management Analysis, Tools, and Techniques; Negotiation Offer; Mathematical Methods; Ship Transportation; Valuation; Consulting Industry; Shipping Industry

Web

Frequently Asked Questions | HBS Online

to the Payment & Financial Aid page . What are my payment options? HBS Online offers a variety of payment methods to provide flexibility, including: Credit and debit cards (Visa, MasterCard, Discover, and AMEX) PayPal Wire transfers... View Details

17 Dec 2007
Research & Ideas

The Rise of Medical Tourism

India [see article], treats indigent people from neighboring countries—Pakistan, Bangladesh, Burma—who suffer from heart disease and can't afford surgery. Treatment for them is free. The hospital is able to provide it because surgical View Details

Keywords: by Martha Lagace; Health; Medical Devices & Supplies

28 Mar 2023
Blog Post

Meet Professor Elisabeth Paulson: A Conversation on Life, Research, and Teaching

mom was a statistics professor, so a career in academia was always something that I considered. During undergrad, I started doing research and was involved in high school tutoring programs. I loved diving deep into complex problems, and helping others apply View Details

1982
Chapter

Informal Covariation Assessment: Data-based vs. Theory-based Judgements

By: D. Jennings, T. M. Amabile and L. D. Ross

Keywords: Mathematical Methods

November 1993
Article

Stable Matchings, Optimal Assignments, and Linear Programming

By: A. E. Roth, U. G. Rothblum and J. H. Vande Vate

Keywords: Mathematical Methods

2013
Article

Beyond Alternating Permutations: Pattern Avoidance in Young Diagrams and Tableaux

By: Nihal Gowravaram and Ravi Jagadeesan

We investigate pattern avoidance in alternating permutations and generalizations thereof. First, we study pattern avoidance in an alternating analogue of Young diagrams. In particular, we extend Babson-West’s notion of shape-Wilf equivalence to apply to alternating... View Details

Keywords: Pattern Avoidance; Alternating Permutations; Descent Type Permutations; Wilf Equivalence; Shape-Wilf Equivalence; Mathematical Methods

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Article

Hinged Dissections Exist

By: Timothy G. Abbott, Zachary Abel, David Charlton, Erik D. Demaine, Martin L. Demaine and Scott Duke Kominers

We prove that any finite collection of polygons of equal area has a common hinged dissection. That is, for any such collection of polygons there exists a chain of polygons hinged at vertices that can be folded in the plane continuously without self-intersection to form... View Details

Keywords: Folding; Reconfiguration; Hinge; Plygon; Refinement; Mathematical Methods

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May 2009
Article

Configurations of Extremal Even Unimodular Lattices

By: Scott Duke Kominers

We extend the results of Ozeki on the configurations of extremal even unimodular lattices. Specifically, we show that if L is such a lattice of rank 56, 72, or 96, then L is generated by its minimal-norm vectors. View Details

Keywords: Mathematical Methods

2010
Article

On the Classification of Type II Codes of Length 24

By: Noam D. Elkies and Scott Duke Kominers

We give a new, purely coding-theoretic proof of Koch's criterion on the tetrad systems of Type II codes of length 24 using the theory of harmonic weight enumerators. This approach is inspired by Venkov's approach to the classification of the root systems of Type II... View Details

Keywords: Mathematical Methods