SED, a normalization free method for DNA microarray data analysis |
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Authors: | Huajun Wang and Hui Huang |
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Affiliation: | (1) Oscient Pharmaceuticals Corporation, , 100 Beaver St, Waltham, Massachusetts 02453, USA |
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Abstract: | Background Analysis of DNA microarray data usually begins with a normalization step where intensities of different arrays are adjusted to the same scale so that the intensity levels from different arrays can be compared with one other. Both simple total array intensity-based as well as more complex "local intensity level" dependent normalization methods have been developed, some of which are widely used. Much less developed methods for microarray data analysis include those that bypass the normalization step and therefore yield results that are not confounded by potential normalization errors. |
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