db_index - [p] (scalar) norm used in the computation...

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SOM Toolbox Online documentation http://www.cis.hut.fi/projects/somtoolbox/ db_index [t,r] = db_index(D, cl, C, p, q) DB_INDEX Davies-Bouldin clustering evaluation index. [t,r] = db_index(D, cl, C, p, q) Input and output arguments ([]'s are optional): D (matrix) data (n x dim) (struct) map or data struct cl (vector) cluster numbers corresponding to data samples (n x 1) [C] (matrix) prototype vectors (c x dim) (default = cluster means)
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Unformatted text preview: [p] (scalar) norm used in the computation (default == 2) [q] (scalar) moment used to calculate cluster dispersions (default = 2) t (scalar) Davies-Bouldin index for the clustering (=mean(r)) r (vector) maximum DB index for each cluster (size c x 1) See also SOM_KMEANS, KMEANS_CLUSTERS, SOM_GAPINDEX. [ SOM Toolbox online doc ]...
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This note was uploaded on 05/23/2010 for the course CS 245 taught by Professor Dunno during the Spring '10 term at Aarhus Universitet.

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