alexa Support Vector Machine Classification of Microarray Gene Expression Data
Engineering

Engineering

Journal of Information Technology & Software Engineering

Author(s): Michael P S Brown, David Lin, William Noble Grundy, Nello Cristianini, Charles Sugnet

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We introduce a new method of functionally classifying genes using gene expression data from DNA microarray hybridization experiments. The method is based on the theory of support vector machines (SVMs). We describe SVMs that use different similarity metrics including a simple dot product of gene expression vectors, polynomial versions of the dot product, and a radial basis function. Compared to the other SVM similarity metrics, the radial basis function SVM appears to provide superior performance in identifying sets of genes with a common function using expression data. In addition, SVM performance is compared to four standard machine learning algorithms. SVMs have many features that make them attractive for gene expression analysis, including their flexibility in choosing a similarity function, sparseness of solution when dealing with large data sets, the ability to handle large feature spaces, and the ability to identify outliers.

This article was published in Data. UCSC-CRL-99-09, Department of Computer Science, University of California, Santa Cruz. and referenced in Journal of Information Technology & Software Engineering

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