Blar i NOFIMA vitenarkiv på forfatter "Westerhuis, Johan A."
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Critical evaluation of assessor difference correction approaches in sensory analysis
Großmann, Justus L.; Westerhuis, Johan A.; Næs, Tormod; Smilde, Age K. (Others, 2022)In sensory data analysis, assessor-dependent scaling effects may hinder the analysis of product differences. Romano et al. (2008) compared several approaches to reduce scaling differences between assessors by their ability ... -
Selecting the number of factors in principal component analysis by permutation testing—Numerical and practical aspects
Vitale, Raffaele; Westerhuis, Johan A.; Næs, Tormod; Smilde, Age K.; de Noord, Onno E.; Ferrer, Alberto (Journal article; Peer reviewed, 2017)Selecting the correct number of factors in principal component analysis (PCA) is a critical step to achieve a reasonable data modelling, where the optimal strategy strictly depends on the objective PCA is applied for. In ...