Evaluation of complementary numerical and visual approaches for investigating pairwise comparisons after principal component analysis

FOOD QUALITY AND PREFERENCE（2023）

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摘要

•Paired comparisons investigated after PCA.•Visual comparison of 95% confidence ellipsoids and 95% density contours.•P values and ellipsoid volumes investigate uncertainty numerically.•P values allow for rapid screening of paired difference results.•Coverage properties of confidence ellipsoids investigated via simulations.

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关键词

principal component analysis (PCA),Paired comparison,Procrustes rotation,Sensory evaluation,Sensory profiling,Bootstrap

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