Neural Computing and Applications

, Volume 20, Issue 8, pp 1211–1218

Multidimensional scaling with discrimination coefficients for supervised visualization of high-dimensional data

ISNN 2010
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Abstract

Visualization techniques for high-dimensional data sets play a pivotal role in exploratory analysis in a wide range of disciplines. A particularly challenging problem represents gene expression data based on microarray technology where the number of features (genes) typically exceeds 20,000, whereas the number of samples is frequently below 200. We investigated class-specific discrimination coefficients for each feature and each pair of classes for an effective nonlinear mapping to lower-dimensional space. We applied the technique to three microarray data sets and compared the projections to two-dimensional space with the results from a conventional multidimensional scaling method, a score plot resulting from principal component analysis, and projections from linear discriminant analysis. In the experiments, we observed that the discrimination coefficients allowed for an improved visualization of high-dimensional genomic data.

Keywords

Visualization Discrimination coefficients Multidimensional scaling Principal component analysis Linear discriminant analysis Microarrays 

Copyright information

© Springer-Verlag London Limited 2010

Authors and Affiliations

  1. 1.Systems Biology Research Group, School of Biomedical SciencesUniversity of UlsterColeraineUK
  2. 2.Department of Cancer Systems Biology, Cancer InstituteJapan Foundation for Cancer ResearchTokyoJapan
  3. 3.University of Applied SciencesWeihenstephanGermany

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