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- Generalized_Procrustes_analysis abstract "Generalized Procrustes analysis (GPA) is a method of statistical analysis that can be used to compare the shapes of objects, or the results of surveys, interviews, or panels. It was developed for analysing the results of free-choice profiling, a survey technique which allows respondents (such as sensory panelists) to describe a range of products in their own words or language. GPA is one way to make sense of free-choice profiling data; other ways can be multiple factorial analysis, or the STATIS method. The method was first published by J. C. Gower in 1975.Generalized Procrustes analysis estimates the scaling factor applied to respondent scale usage, thus it generates a weighting factor that is used to compensate for individual scale usage differences. Unlike measures such as a principal component analysis, since GPA uses individual level data, a measure of variance is utilized in the analysis.The Procrustes distance provides a metric to minimize in order to superimpose a pair of shape instances annotated by landmark points. GPA applies the Procrustes analysis method to superimpose a population of shapes instead of only two shape instances. The algorithm outline is the following: arbitrarily choose a reference shape (typically by selecting it among the available instances) superimpose all instances to current reference shape compute the mean shape of the current set of superimposed shapes if the Procrustes distance between the mean shape and the reference is above a threshold, set reference to mean shape and continue to step 2.↑ ↑ ↑ ↑".
- Generalized_Procrustes_analysis wikiPageID "12483536".
- Generalized_Procrustes_analysis wikiPageRevisionID "558024784".
- Generalized_Procrustes_analysis hasPhotoCollection Generalized_Procrustes_analysis.
- Generalized_Procrustes_analysis subject Category:Biometrics.
- Generalized_Procrustes_analysis subject Category:Euclidean_symmetries.
- Generalized_Procrustes_analysis subject Category:Multivariate_statistics.
- Generalized_Procrustes_analysis type Abstraction100002137.
- Generalized_Procrustes_analysis type Attribute100024264.
- Generalized_Procrustes_analysis type EuclideanSymmetries.
- Generalized_Procrustes_analysis type Property104916342.
- Generalized_Procrustes_analysis type SpatialProperty105062748.
- Generalized_Procrustes_analysis type Symmetry105064827.
- Generalized_Procrustes_analysis comment "Generalized Procrustes analysis (GPA) is a method of statistical analysis that can be used to compare the shapes of objects, or the results of surveys, interviews, or panels. It was developed for analysing the results of free-choice profiling, a survey technique which allows respondents (such as sensory panelists) to describe a range of products in their own words or language.".
- Generalized_Procrustes_analysis label "Generalized Procrustes analysis".
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