Sensitivity analysis: the posterior means of the inferred relative activities of TFs versus 18 time points. (a) The system model included eight cell-cycle regulators. (b) The system model included six cell-cycle regulators and two TFs not specific to cell-cycle genes. The values for (p, q, πR) used are: (0.4, 0.8, 0.2), (0.2, 0.8, 0.5), (0.1, 0.8, 0.2), and (0.2, 0.9, 0.2).