Wine ratings: seeking a consensus among tasters via normalization, approval and aggregation

Olivier Gergaud, Victor Ginsburgh and Juan Moreno-Ternero

No 21.05, Working Papers from Universidad Pablo de Olavide, Department of Economics

Abstract: The modern era of wine journalism has provided abundant information about wines and a 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 paper 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 Judgement of Paris and to rank 2018 en-primeur Bordeaux wines, rated by five international experts.

Keywords: Wines; Ratings; Global Wine Score; 2018 en-primeur Bordeaux wines; Judgement of Paris (search for similar items in EconPapers)
JEL-codes: D63 L66 (search for similar items in EconPapers)
Pages: 34 pages
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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Journal Article: Wine Ratings: Seeking a Consensus among Tasters via Normalization, Approval, and Aggregation (2021)
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Persistent link: https://EconPapers.repec.org/RePEc:pab:wpaper:21.05

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