Modelling and Monitoring the Decision Process of Wine Tasting Panellists

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Helena Alvelos (Author) Other; J. A. Sarsfield Cabral (Author) FEUP

Journal

Title: Food Quality and Preference

Vol. 18 No. 1

Pages: 51-57

ISSN: 0950-3293

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 6 Citations

Scientific classification

FOS: Social sciences > Economics and Business

Other information

Authenticus ID: P-004-D6Z

DOI: 10.1016/j.foodqual.2005.07.013

Abstract (EN): This paper presents a method for modelling and monitoring the individual decision process of wine tasting panellists. The individual decision of approving or rejecting a wine is based on the panellist's evaluation of the wine characteristics. The decision process is modelled through a logistic regression where the dependent variable is the decision itself (rejectedְ or approved'1) and the independent variables are the characteristics that were considered relevant for the wine evaluation. The process is monitored using a CUSUM control chart for binomial proportions. The control chart variable is the number of disagreements observed (in a sample of size N) between the actual decisions of the panellist and the results anticipated by the logistic regression model. The method was tested in the Port Wine Institute. Such a test revealed that the logistic model is a useful tool for clarifying both the way in which the wine evaluation process is carried out, and how the decisions are taken. Furthermore, the test has also showed that the control chart is responsive to signicant changes of the individual decision process.

Language: English

Type (Professor's evaluation): Scientific