Dimension Reduction for Classification with Gene Expression Microarray Data
Dai Jian J,
Lieu Linh and
Rocke David
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Dai Jian J: University of California, Davis
Lieu Linh: University of California, Los Angeles
Rocke David: University of California, Davis
Statistical Applications in Genetics and Molecular Biology, 2006, vol. 5, issue 1, 21
Abstract:
An important application of gene expression microarray data is classification of biological samples or prediction of clinical and other outcomes. One necessary part of multivariate statistical analysis in such applications is dimension reduction. This paper provides a comparison study of three dimension reduction techniques, namely partial least squares (PLS), sliced inverse regression (SIR) and principal component analysis (PCA), and evaluates the relative performance of classification procedures incorporating those methods. A five-step assessment procedure is designed for the purpose. Predictive accuracy and computational efficiency of the methods are examined. Two gene expression data sets for tumor classification are used in the study.
Keywords: partial least squares; sliced inverse regression; feature extraction; gene expression; tumor classification (search for similar items in EconPapers)
Date: 2006
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DOI: 10.2202/1544-6115.1147
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