Wine Ratings: Seeking a Consensus among Tasters via Normalization, Approval, and Aggregation

Olivier Gergaud, Victor Ginsburgh and Juan Moreno-Ternero

ULB Institutional Repository from ULB -- Universite Libre de Bruxelles

Abstract: The modern era of wine journalism has provided abundant information about wines and widespread use of numerical rating systems. A tiny difference, especially at the top of the distribution of ratings, may have striking consequences on wine sales and investment returns. This article provides a general framework to obtain a consensus among tasters' opinions (reflected as numerical wine ratings) via three subsequent stages: normalization, approval, and aggregation. It is inspired by contributions in political science, social choice, game theory, and operations research. We apply it to the Judgment of Paris as well as to rank 2018 en-primeur Bordeaux wines, rated by five international experts. (JEL Classifications: C18, L15, L66)

Keywords: 2018 en-primeur Bordeaux wines; global wine score; Judgment of Paris; ratings; wines (search for similar items in EconPapers)
Date: 2021
Note: SCOPUS: ar.j
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Published in: Journal of Wine Economics (2021)

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Journal Article: Wine Ratings: Seeking a Consensus among Tasters via Normalization, Approval, and Aggregation (2021)
Working Paper: Wine ratings: seeking a consensus among tasters via normalization, approval and aggregation (2021)
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