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FUNCTIONAL APPROACH FOR THE ANALYSIS OF TIME INTENSITY CURVES USING B‐SPLINES
Author(s) -
LEDAUPHIN STÉPHANIE,
VIGNEAU EVELYNE,
CAUSEUR DAVID
Publication year - 2005
Publication title -
journal of sensory studies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 53
eISSN - 1745-459X
pISSN - 0887-8250
DOI - 10.1111/j.1745-459x.2005.00025.x
Subject(s) - sweetness , repeatability , projection (relational algebra) , mathematics , functional data analysis , computer science , statistics , algorithm , psychology , neuroscience , taste
This article deals with a functional approach based on the projection upon a B‐spline basis in order to analyze Time Intensity curves. The modelization is followed, on the one hand, by the assessment of the repeatability and the discrimination ability of the panelists, and on the other hand, by the determination of a good compromise over repetitions. Finally, a multidimensional analysis enables the comparison of the shapes of the curves associated with the assessors (assessors’ signature) and the characterization of the products. The properties of this functional approach are illustrated with TI curves describing sweetness variations of drinks.