Stability of sample configurations from projective mapping: How many consumers are necessary?

Dublin Core

Título

Stability of sample configurations from projective mapping: How many consumers are necessary?

Tema

COMPORTAMIENTO DEL CONSUMIDOR
PERFILES SENSORIALES
BIBLIOGRAFIA NACIONAL QUIMICA
2014

Abstract

Projective mapping for sensory characterisation with consumers has been used for a relatively short period of time, which suggests that the development of guidelines regarding best practices is strongly needed. The present work aims to provide an insight on the minimum number of consumers needed to reach stable sample configurations. Data sets from 21 different consumer studies, differing in product category, number of samples and degree of difference among them, were used to evaluate the influence of the number of consumers on the stability of sample configurations by means of a resampling approach. For each study, 1000 random subsets of different number of consumers were generated from the original data set. For each virtual panel, sample configurations were obtained using Multiple Factor Analysis. The agreement between them and the reference configurations (obtained with all the consumers) was evaluated through the RV coefficient, using the first two and the first four dimensions of the MFA. Results showed that the stability of sample configuration clearly depended on the degree of difference and type of differences among samples and the number of samples in the dataset. Across the 21 data sets analysed, results suggested that when working with widely different samples, 50 consumers seems as a safe recommendation of minimum consumer panel size to obtain reliable results with projective mapping. However, after any characterisation by projective mapping is completed, it is highly recommended to check, a posteriori, the reliability of the sample space configuration using a bootstrapping procedure.

Autor

Vidal, Leticia
Silva Cadena, Rafael
Antúnez, Lucía
Varela, Paula

Fuente

Food Quality and Preference v. 34, 2014. -- p. 79-87

Editor

Elsevier

Fecha

2014

Derechos

Información sobre Derechos de Autor

(Por favor lea este aviso antes de abrir los documentos u objetos)

La legislación uruguaya protege el derecho de autor sobre toda creación literaria, científica o artística, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeción a lo establecido por el derecho común y las siguientes leyes

(LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)

ADVERTENCIA - La consulta de este documento queda condicionada a la aceptación de las siguientes condiciones de uso: Este documento es únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilización o cita de partes debe indicarse el nombre de la persona autora.

Formato

PDF

Idioma

Inglés

Tipo

Artículo

Identificador

doi:10.1016/j.foodqual.2013.12.006

Document Item Type Metadata

Original Format

PDF
Fecha de agregación
December 9, 2014
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
Etiquetas
,
Citación
Vidal, Leticia, “Stability of sample configurations from projective mapping: How many consumers are necessary?,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed May 24, 2020, http://riquim.fq.edu.uy/items/show/2176.
Archivos