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Transcriptional module identification: discretization and alphabet transformation.

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posted on 20.02.2013 by Joana P. Gonçalves, Ricardo S. Aires, Alexandre P. Francisco, Sara C. Madeira

Illustrative example of discretization and alphabet transformation for a time series gene expression matrix: (left) original expression matrix M'; (center) discretized matrix M, obtained by applying a discretization based on transitions between time points to the original matrix M' using a three-symbol alphabet [28]; and (right) matrix M after the alphabet transformation that appends the column number to every symbol in the matrix.

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