Transcription of NON METRIC MULTIDIMENSIONAL SCALING MDS
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NON METRIC MULTIDIMENSIONAL SCALING MDS
N O N -M E T R I C M U LT I D I M E N S I O N A L SCALING (MDS)Steven M. Ho!andDepartment of Geology, University of Georgia, Athens, GA 30602-2501 May 2008 IntroductionNonmetric MULTIDIMENSIONAL SCALING (MDS, also NMDS and NMS) is an ordination tech-nique that differs in several ways from nearly all other ordination methods. In most ordina-tion methods, many axes are calculated, but only a few are viewed, owing to graphical limita-tions. In MDS, a small number of axes are explicitly chosen prior to the analysis and the data are fitted to those dimensions; there are no hidden axes of variation. Second, most other or-dination methods are analytical and therefore result in a single unique solution to a set of data.
NON-METRIC MULTIDIMENSIONAL SCALING (MDS) Steven M. Ho!and Department of Geology, University of Georgia, Athens, GA 30602-2501 May 2008
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