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

Author

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  • Olivier Gergaud

    (KEDGE Business School, Bordeaux, France)

  • Victor Ginsburgh

    (ECARES, Universite Libre de Bruxelles, Belgium, and CORE, Universite catholique de Louvain, Belgium)

  • Juan D. Moreno-Ternero

    (Department of Economics, Universidad Pablo de Olavide)

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.

Suggested Citation

  • Olivier Gergaud & Victor Ginsburgh & Juan D. Moreno-Ternero, 2021. "Wine ratings: seeking a consensus among tasters via normalization, approval and aggregation," Working Papers 21.05, Universidad Pablo de Olavide, Department of Economics.
  • Handle: RePEc:pab:wpaper:21.05
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    References listed on IDEAS

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    Cited by:

    1. Clarissa Laura Maria Spiess Bru, 2023. "Does the Tasting Note Matter? Language Categories and Their Impact on Professional Ratings and Prices," Working Papers Dissertations 105, Paderborn University, Faculty of Business Administration and Economics.
    2. Olivier Gergaud & Victor Ginsburgh & Juan D. Moreno-Ternero, 2022. "Tracking Quality Assessments Over Time. The Rise and Fall of S.L.V. Cabernet Sauvignon," Working Papers ECARES 2022-13, ULB -- Universite Libre de Bruxelles.
    3. Barberà, Salvador & Bossert, Walter & Moreno-Ternero, Juan D., 2023. "Wine rankings and the Borda method," Journal of Wine Economics, Cambridge University Press, vol. 18(2), pages 122-138, May.
    4. Bergantiños, Gustavo & Moreno-Ternero, Juan D., 2020. "Broadcasting La Liga," MPRA Paper 104750, University Library of Munich, Germany.
    5. Victor Ginsburgh & Juan D. Moreno-Ternero, 2023. "The Eurovision Song Contest: voting rules, biases and rationality," Journal of Cultural Economics, Springer;The Association for Cultural Economics International, vol. 47(2), pages 247-277, June.
    6. Manuel Serra & Nuno Antonio & Claudia Henriques & Carlos M. Afonso, 2021. "Promoting Sustainability through Regional Food and Wine Pairing," Sustainability, MDPI, vol. 13(24), pages 1-22, December.
    7. Bodington, Jeff, 2021. "A Maximum Entropy Estimate of Uncertainty about a Wine Rating," Working Papers 321847, American Association of Wine Economists.

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    More about this item

    Keywords

    Wines; Ratings; Global Wine Score; 2018 en-primeur Bordeaux wines; Judgement of Paris;
    All these keywords.

    JEL classification:

    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement
    • L66 - Industrial Organization - - Industry Studies: Manufacturing - - - Food; Beverages; Cosmetics; Tobacco

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