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Poor Correlation Between the New Statistical and the Old Empirical Algorithms for DNA Microarray Analysis
Genomics & Informatics ; : 87-93, 2003.
Artigo em Inglês | WPRIM | ID: wpr-197481
ABSTRACT
DNA microarray is currently the most prominent tool for investigating large-scale gene expression data. Different algorithms for measuring gene expression levels from scanned images of microarray experiments may significantly impact the following steps of functional genomic analyses. Affymetrix(R) recently introduced high-density microarrays and new statistical algorithms in Microarray Suit (MAS) version 5.0(R). Very high correlations (0.92 - 0.97) between the new algorithms and the old algorithms (MAS 4.0) across several species and conditions were reported. We found that the column-wise array correlations had a tendency to be much higher than the row-wise gene correlations, which may be much more meaningful in the following higher-order data analyses including clustering and pattern analyses. In this paper, not only the detailed comparison of the two sets of algorithms is illustrated, but the impact of the introducing new algorithms on the further clustering analysis of microarray data and of possible pitfalls in mixing the old and the new algorithms were also described.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: DNA / Expressão Gênica / Estatística como Assunto / Análise de Sequência com Séries de Oligonucleotídeos Idioma: Inglês Revista: Genomics & Informatics Ano de publicação: 2003 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: DNA / Expressão Gênica / Estatística como Assunto / Análise de Sequência com Séries de Oligonucleotídeos Idioma: Inglês Revista: Genomics & Informatics Ano de publicação: 2003 Tipo de documento: Artigo