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(525)
- News (51)
- Research (413)
- Events (8)
- Multimedia (1)
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- November 2019
- Article
Full Substitutability
By: John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky and Alexander Westkamp
Various forms of substitutability are essential for establishing the existence of equilibria and other useful properties in diverse settings such as matching, auctions, and exchange economies with indivisible goods. We extend earlier models’ definitions of... View Details
Hatfield, John William, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, and Alexander Westkamp. "Full Substitutability." Theoretical Economics 14, no. 4 (November 2019): 1535–1590.
- 2018
- Working Paper
Full Substitutability
By: John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky and Alexander Westkamp
Various forms of substitutability are essential for establishing the existence of equilibria and other useful properties in diverse settings such as matching, auctions, and exchange economies with indivisible goods. We extend earlier models’ definitions of... View Details
Hatfield, John William, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, and Alexander Westkamp. "Full Substitutability." Harvard Business School Working Paper, No. 19-016.
- 2014
- Working Paper
Hidden Substitutes
By: John William Hatfield and Scott Duke Kominers
In this paper, we show that preferences exhibiting some forms of complementarity
in fact have an underlying substitutable structure. Specifically, we show that some
preferences that are not substitutable in the setting of many-to-one matching with
contracts become... View Details
Keywords: Many-to-One Matching; Many-to-Many Matching; Stability; Substitutes; Matching With Contracts; Slot-Specific Priorities; Sherlock; Market Design; Contracts; Marketplace Matching; Balance and Stability
Hatfield, John William, and Scott Duke Kominers. "Hidden Substitutes." Working Paper, September 2014.
- Article
Testing Substitutability
By: John William Hatfield, Nicole Immorlica and Scott Duke Kominers
We provide an algorithm for testing the substitutability of a length-N preference relation over a set of contracts X in time O(|X|3⋅N3). Access to the preference relation is essential for this result: We show that a substitutability-testing algorithm with access only... View Details
Keywords: Substitutability; Matching; Communication Complexity; Preference Elicitation; Marketplace Matching; Communication; Mathematical Methods; Economics
Hatfield, John William, Nicole Immorlica, and Scott Duke Kominers. "Testing Substitutability." Games and Economic Behavior 75, no. 2 (July 2012): 639–645.
- June 2013 (Revised March 2014)
- Technical Note
Strategic Complements and Substitutes
The framework of strategic complements and substitutes can help companies anticipate competitors' responses. It is particularly helpful in deciding on price- or capacity-commitments (or pre-emption), but it can provide more general guidance for analyzing the potential... View Details
Keywords: Competition; Strategic Substitutes; Strategic Complements; Puppy Dog Strategy; Competitive Strategy; Game Theory; Strategy; Economics
Van den Steen, Eric. "Strategic Complements and Substitutes." Harvard Business School Technical Note 713-542, June 2013. (Revised March 2014.)
- 2015
- Working Paper
Full Substitutability
By: John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky and Alexander Westkamp
Various forms of substitutability are essential for establishing the existence of
equilibria and other useful properties in diverse settings such as matching, auctions,
and exchange economies with indivisible goods. We extend earlier models' canonical
definitions of... View Details
Hatfield, John William, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, and Alexander Westkamp. "Full Substitutability." Working Paper, May 2015.
- Article
Intertemporal Substitution in Macroeconomics
By: J. J. Rotemberg, N. Gregory Mankiw and Lawrence Summers
Keywords: Macroeconomics
Rotemberg, J. J., N. Gregory Mankiw, and Lawrence Summers. "Intertemporal Substitution in Macroeconomics." Quarterly Journal of Economics 100, no. 1 (February 1985): 225–251.
- Research Summary
Internet Auctions for Close Substitutes
Economists agree that eBays auction design is sensible and potentially welfare-maximizing for the trade of collectibles, which are unique and idiosyncratic. For mainstream goods, which have close but imperfect substitutes (cars, cameras, computers, clothes), the... View Details
- Research Summary
Internet Auctions for Close Substitutes
(with Eric Budish)
This is mainly an experimental project where we compare many auction designs in a market for close substitutes. We hypothesize some information will not get to market if there is sequential bidding and/or a hard close, and that this will... View Details
- 2005
- Chapter
Wi-Fi: Complement or Substitute for 3G?
- 2010
- Working Paper
Substitution Patterns of the Random Coefficients Logit
By: Thomas J. Steenburgh and Andrew Ainslie
Previous research suggests that the random coefficients logit is a highly flexible model that overcomes the problems of the homogeneous logit by allowing for differences in tastes across individuals. The purpose of this paper is to show that this is not true. We prove... View Details
Steenburgh, Thomas J., and Andrew Ainslie. "Substitution Patterns of the Random Coefficients Logit." Harvard Business School Working Paper, No. 10-053, January 2010.
- December 2003 (Revised April 2004)
- Case
Blockbuster Inc. & Technological Substitution (B): Confronting New Digital Formats
Investigates how the rise of digital video formats threatens to make videocassette technology obsolete; how this technological substitution might alter the economics and structure of the video rental and retail industries; and how Blockbuster Inc., the industry leader,... View Details
Keywords: Risk and Uncertainty; Decisions; Technological Innovation; Competition; Change Management; Service Industry; Motion Pictures and Video Industry
Coughlan, Peter J., and Jenny Illes. "Blockbuster Inc. & Technological Substitution (B): Confronting New Digital Formats." Harvard Business School Case 704-407, December 2003. (Revised April 2004.)
- June 2002
- Article
Intermedia Substitutability and Market Demand by National Advertisers
By: Alvin J. Silk, Lisa R. Klein and Ernst R. Berndt
Silk, Alvin J., Lisa R. Klein, and Ernst R. Berndt. "Intermedia Substitutability and Market Demand by National Advertisers." Review of Industrial Organization 20, no. 4 (June 2002): 323–348.
- July 28, 2004
- Article
Generic Dispensing and Substitution in Mail and Retail Pharmacies
By: Marta Wosinska and Robert S. Huckman
Wosinska, Marta, and Robert S. Huckman. "Generic Dispensing and Substitution in Mail and Retail Pharmacies." Health Affairs (July 28, 2004): W4–409 – W4–416.
- 1999
- Working Paper
The Value of Modularity Splitting and Substitution
By: Carliss Y. Baldwin and Kim Clark
- December 2003 (Revised April 2004)
- Case
Blockbuster Inc. & Technological Substitution (C): The Internet Changes the Game
Investigates how the rise of the Internet as a vehicle for renting and buying movies has disrupted the video rental industry and how market leader Blockbuster Inc. can and should respond to these developments. Explores how the emergence of e-commerce affects the degree... View Details
Keywords: Organizational Change and Adaptation; Risk and Uncertainty; Decisions; Technological Innovation; Competition; Change Management; Service Industry; Motion Pictures and Video Industry
Coughlan, Peter J., and Jenny Illes. "Blockbuster Inc. & Technological Substitution (C): The Internet Changes the Game." Harvard Business School Case 704-462, December 2003. (Revised April 2004.)
- 2000
- Working Paper
Unemployment Benefits as a Substitute for a Conservative Central Banker
By: Rafael Di Tella and Robert MacCulloch
- 1997
- Working Paper
Intermedia Substitutability in the U.S. National Advertising Market
By: Alvin J. Silk, Lisa R. Klein and Ernst R. Berndt
- 2001
- Other Unpublished Work
Intermedia Substitutability and Market Demand by National Advertisers
By: Alvin J. Silk, Lisa R. Klein and Ernst R. Berndt