A new profile alignment method for clustering gene expression data

  • Authors:
  • Ataul Bari;Luis Rueda

  • Affiliations:
  • School of Computer Science, University of Windsor, Windsor, ON, Canada;Department of Computer Science, University of Concepción, Concepción, Chile

  • Venue:
  • AI'06 Proceedings of the 19th international conference on Advances in Artificial Intelligence: Canadian Society for Computational Studies of Intelligence
  • Year:
  • 2006

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Abstract

We focus on clustering gene expression temporal profiles, and propose a novel, simple algorithm that is powerful enough to find an efficient distribution of genes over clusters. We also introduce a variant of a clustering index that can effectively decide upon the optimal number of clusters for a given dataset. The clustering method is based on a profile-alignment approach, which minimizes the mean-square-error of the first order differentials, to hierarchically cluster microarray time-series data. The effectiveness of our algorithm has been tested on datasets drawn from standard experiments, showing that our approach can effectively cluster the datasets based on profile similarity.