NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Kevin A. Bryan

University of Toronto
Canada

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Institutional Affiliation: University of Toronto

NBER Working Papers and Publications

April 2019In-Text Patent Citations: A User’s Guide
with Yasin Ozcan, Bhaven N. Sampat: w25742
We introduce, validate, and provide a public database of a new measure of the knowledge inventors draw on: scientific references in patent specifications. These references are common and algorithmically extractable. Critically, they are very different from the “front page” prior art commonly used to proxy for inventor knowledge. Only 24% of front page citations to academic articles are in the patent text, and 31% of in-text citations are on the front page. We explain these differences by describing the legal rules and practice governing citation. Empirical validations suggest that in-text citations appear to more accurately measure real knowledge flows, consistent with their legal role.
July 2018A Theory of Multihoming in Rideshare Competition
with Joshua S. Gans: w24806
We examine competition amongst ridesharing platforms where firms compete by choosing both the price of rides and the extent of idleness. Idleness means drivers who are compensated without picking up passengers, instead acting to reduce passenger wait time. We show that when consumers are the only agents who multihome, idleness falls compared with when they face a monopoly ridesharing platform. When drivers and consumers multihome, idleness further falls to zero as it involves costs for each platform that are appropriated, in part, by their rival. Interestingly, socially superior outcomes may involve monopoly or competition under various multihoming regimes, depending on the density of the city, and the relative costs of idleness versus consumer disutility of waiting.

Published: Kevin A. Bryan & Joshua S. Gans, 2019. "A theory of multihoming in rideshare competition," Journal of Economics & Management Strategy, vol 28(1), pages 89-96. citation courtesy of

 
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