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- W2029043629 abstract "Microarray-based tumor classification is characterized by a very large number of features (genes) and small number of samples. In such cases, statistical techniques cannot determine which genes are correlated to each tumor type. A popular solution is the use of a subset of pre-specified genes. However, molecular variations are generally correlated to a large number of genes. A gene that is not correlated to some disease may, by combination with other genes, express itself. In this paper, we propose a new classiification strategy that can reduce the effect of over-fitting without the need to pre-select a small subset of genes. Our solution works by taking advantage of the information embedded in the testing samples. We note that a well-defined classification algorithm works best when the data is properly labeled. Hence, our classification algorithm will discriminate all samples best when the testing sample is assumed to belong to the correct class. We compare our solution with several well-known alternatives for tumor classification on a variety of publicly available data-sets. Our approach consistently leads to better classification results. Studies indicate that thousands of samples may be required to extract useful statistical information from microarray data. Herein, it is shown that this problem can be circumvented by using the information embedded in the testing samples." @default.
- W2029043629 created "2016-06-24" @default.
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- W2029043629 date "2008-06-14" @default.
- W2029043629 modified "2023-10-06" @default.
- W2029043629 title "Using the information embedded in the testing sample to break the limits caused by the small sample size in microarray-based classification" @default.
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- W2029043629 doi "https://doi.org/10.1186/1471-2105-9-280" @default.
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