Gene selection for brain cancer classification.
Conf Proc IEEE Eng Med Biol Soc
; 2006: 5846-9, 2006.
Article
en En
| MEDLINE
| ID: mdl-17947170
ABSTRACT
With the introduction of microarray, cancer classification, diagnosis and prediction are made more accurate and effective. However, the final outcome of the data analyses very much depend on the huge number of genes with relatively small number of samples present in each experiment. It is thus crucial to select relevant genes to be used for future specific cancer markers. Many feature selection methods have been proposed but none is able to classify all kinds of microarray data accurately, especially on those multi-class datasets. We propose a one-versus-one comparison method for selecting discriminatory features instead of performing the statistical test in a one-versus-all manner. Brain cancer is chosen as an example. Here, 3 types of statistics are used signal-to-noise ratio (SNR), t-statistics and Pearson correlation coefficient. Results are verified by performing hierarchical and k-means clustering. Using our one-versus-one comparisons, best performance accuracies of 90.48% and 97.62% can be obtained by hierarchical and k-means clustering respectively. However best performance accuracies of 88.10% and 80.95% can be obtained respectively when using one-versus-all comparison. This shows that one-versus-one comparison is superior.
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Banco de datos:
MEDLINE
Asunto principal:
Neoplasias Encefálicas
/
Regulación Neoplásica de la Expresión Génica
/
Biología Computacional
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Conf Proc IEEE Eng Med Biol Soc
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2006
Tipo del documento:
Article