Improving Microarray Expressions with Recalibration

作者: Karl Fraser , Zidong Wang , Yongmin Li , Paul Kellam , Xiaohui Liu

DOI: 10.1063/1.2793403

关键词: Expression (mathematics)Computer sciencePixelFold changeReconstruction algorithmNoiseIterative reconstructionArtificial intelligencePattern recognitionProcess (computing)Histogram

摘要: Due to the nature of microarray experiments, gene expression levels across and through slide channels can experience up 103 fold change differences in intensity. Such data variance is caused by ‘noise’ elements, which influence final expressions. This paper proposes a simple technique whereby histogram transformations are used reduce noise artefacts. Akin magic eraser (removing top layer surface), attempts blend pixels associated with spots into their background. The identification relatively straightforward, but blending them appropriate values non‐trivial. Once replacement determined, background should be good approximation original. By subtracting this surface from original, spot regions would more accurate. Experiments were carried out results compared “GenePix” mainstream process “O'Neill” specific reconstruction algorithm. Not only was our shown significantly quicker execution time, it also reduced while typically generating less variation within gene's.Due si...

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