Effect of Background Correction on Cancer Classification with Gene Expression Data

  • Authors:
  • Adelaide Freitas;Gladys Castillo;Ana São Marcos

  • Affiliations:
  • Department of Mathematics, University of Aveiro, Portugal;Department of Mathematics, University of Aveiro, Portugal;Department of Mathematics, University of Aveiro, Portugal

  • Venue:
  • AIME '09 Proceedings of the 12th Conference on Artificial Intelligence in Medicine: Artificial Intelligence in Medicine
  • Year:
  • 2009

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Abstract

This paper empirically compares six background correction methods aimed at removing unspecific background noise of the overall signal level measured by a scanner across microarrays. Using three published cDNA microarray datasets we investigated the effect of background correction on cancer classification in terms of the predictive performance of two classifiers (k-NN and support vector machine with linear kernel) induced from microarray data where a particular background correction method is applied, individually and in combination with a single-bias or double-bias-removal normalization method.