Comparison of Correspondence Analysis based on Hellinger and chi-square distances to obtain sensory spaces from check-all-that-apply (CATA) questions

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Título

Comparison of Correspondence Analysis based on Hellinger and chi-square distances to obtain sensory spaces from check-all-that-apply (CATA) questions

Tema

COMPORTAMIENTO DEL CONSUMIDOR
PERFILES DEL CONSUMIDOR
EVALUACION SENSORIAL
BIBLIOGRAFIA NACIONAL QUIMICA
2015

Abstract

Sample configurations from check-all-that-apply (CATA) questions are obtained using Correspondence Analysis (CA). Classical CA is based on chi-square distance, which has been reported to be strongly affected by infrequently selected terms. The Hellinger distance has been proposed as an alternative distance metric, and the aim of the present work was to compare product spaces from CATA questions obtained using CA based on chi-square and Hellinger distances. Data sets from 71 studies (5121 consumers), differing by product category, number of consumers, number of samples and number of terms included in the CATA question, as well as frequency of infrequently used terms, were analyzed. For each of the studies, frequency tables were input to CA based on chi-square and Hellinger distances. Sample and term configurations in the first two dimensions were compared using the RV coefficient. Furthermore, the stability of sample and term configurations for each type of distance was evaluated by simulating repeated experiments using a bootstraping resampling approach. Sample and term configurations obtained using Hellinger and chi-square distances were similar (average RV coefficients for sample configurations = 0.99; average RV coefficients between term configurations = 0.89). The stability of sample and term configurations were not largely affected by the type of distance used to analyze frequency tables. Results from the present work suggest that CA based on chi-square and Hellinger distances provide similar results. Contributing to guidelines for practitioners, this research therefore supports classical CA analysis as an acceptable approach to the analysis of sensory-specific CATA data.

Autor

Vidal, Leticia
Tárrega, Amparo
Antúnez, Lucía
Jaeger, Sara R

Fuente

Food Quality and Preference v. 43, 2015. -- p. 106-112

Editor

Elsevier

Fecha

2015

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PDF

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Artículo

Identificador

http://dx.doi.org/10.1016/j.foodqual.2015.03.003

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Original Format

PDF
Fecha de agregación
August 11, 2015
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
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Citación
Vidal, Leticia, “Comparison of Correspondence Analysis based on Hellinger and chi-square distances to obtain sensory spaces from check-all-that-apply (CATA) questions,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed June 24, 2024, https://riquim.fq.edu.uy/items/show/3358.
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