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Iterative Clustering Analysis for Grouping Missing Data in Gene Expression Profiles

  • Dae-Won Kim
  • Bo-Yeong Kang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3918)

Abstract

Clustering has been used as a popular technique for finding groups of genes that show similar expression patterns under multiple experimental conditions. Because a clustering method requires a complete data matrix as an input, we must estimate the missing values using an imputation method in the preprocessing step of clustering. However, a common limitation of these conventional approach is that once the estimates of missing values are fixed in the preprocessing step, they are not changed during subsequent process of clustering. Badly estimated missing values obtained in data preprocessing are likely to deteriorate the quality and reliability of clustering results. Thus, a new clustering method is required for improving missing values during iterative clustering process.

Keywords

Cluster Method Cluster Result Cluster Performance Imputation Method Cluster Centroid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Dae-Won Kim
    • 1
  • Bo-Yeong Kang
    • 2
  1. 1.School of Computer Science and EngineeringChung-Ang UniversitySeoulKorea
  2. 2.Center of Healthcare Ontology R&DSeoul National UniversitySeoulKorea

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