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Fig. 8 | BMC Bioinformatics

Fig. 8

From: GMMchi: gene expression clustering using Gaussian mixture modeling

Fig. 8

Determining the background threshold for microarray data using GMMchi: a Overall distribution of all the expression levels in our microarray data from all the 78 cell lines. The dotted vertical green line and the blue arrow are estimates of the position of the threshold separating the background noise from the true positive expression levels. The estimation is based on a GMMchi fit of two normal distributions to the overall data. b Probe filter pipeline for removing probes and so genes that are predicted to have no significant expression above the background noise threshold

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