Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 561318
Title The interpretation of Generalized Procrustes Analysis and allied methods
Author(s) Dijksterhuis, G.B.; Gower, J.C.
Source Food Quality and Preference 3 (1991)2. - ISSN 0950-3293 - p. 67 - 87.
Publication type Refereed Article in a scientific journal
Publication year 1991
Keyword(s) Analysis of Variance - Generalized Procrustes Analysis - sensory data

We discuss various issues surrounding the use and interpretation of Generalized Procrustes Analysis and related methods. Included are considerations that have to be made before starting an analysis, how to handle different dimensionalities of data, when to consider fitting scaling factors and when not to, and the distinction between the number of dimensions that are needed to give an adequate fit and the number of dimensions needed for graphical representation. The distinction between signal and noise plays an important part in explaining how different methods are suitable for exploring different aspects of the data, rather than being viewed as competing methods with the same general objectives. Explanations are largely set in a geometrical context, thus keeping technical mathematics to a minimum; a common Analysis of Variance framework allows all the methods to be considered in a unified way and suggests some new ways in which these kinds of data may be analysed. The whole is illustrated by example analyses.

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