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. 2010 Oct 13;11:511. doi: 10.1186/1471-2105-11-511

Figure 1.

Figure 1

A schematic overview of the method. The TFA perturbations are estimated in an iterative fashion that trims unimportant edges from the regulatory (connectivity) network. If the data set is not NCA-compliant, additional data are generated in silico before estimating the TFA perturbations. Then, the significance of the TFA perturbations is assessed using the z-test and null distributions created by random sampling of expression data across the whole genome.