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Table 3 Wilcoxon signed-rank test (p-values)

From: Comparative study of unsupervised dimension reduction techniques for the visualization of microarray gene expression data

PCA compared to ...

Accuracies(dim 2)

DB-Index(dim 2)

KPCA

0.1562

0.3223

LLE

0.0195

0.0273

IM

0.0078

0.1055

IM(mod)

0.0547

0.2324

LEM

0.1953

0.3750

DM

0.5000

0.8457

MVU

0.1953

0.7695

  1. The p-values of the Wilcoxon signed-rank test based on the null hypothesis, that PCA yields results similar to each other nonlinear method. The median randomization accuracies and cluster scores (both for two target space dimensions) of all ten datasets served as input to the tests.
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BMC Bioinformatics

ISSN: 1471-2105

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