Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/77174 
Year of Publication: 
1998
Series/Report no.: 
Technical Report No. 1998,35
Publisher: 
Universität Dortmund, Sonderforschungsbereich 475 - Komplexitätsreduktion in Multivariaten Datenstrukturen, Dortmund
Abstract: 
We consider a model for sensory profiling data including translation, rotation and scaling. We compare two methods to calculate an overall consensus from several data matrices: GPA and STATIS. These methods are briefly illustrated and explained under our model. A series of simulations to compare their performance has been carried out. We found significant differences in performance depending on the variance of random errors and on the dimensionality of the true underlying consensus. Therefore we investigated on the dimensionality of the calculated group averages. We found both methods to give too many dimensions compared to the true consensus. This finding is supported by some theoretical considerations. Finally we propose a combined approach which takes advantage of both methods and which gave better results in the simulations.
Subjects: 
Consensus
Dimensionality
GPA
modified GPA
STATIS
Sensory Profiling
Document Type: 
Working Paper

Files in This Item:
File
Size
478.54 kB
195.05 kB





Items in EconStor are protected by copyright, with all rights reserved, unless otherwise indicated.