Multiple phase prediction model and cell cycle gene prediction. (A) Performance of regularized multinomial logistic regression (RMLR) in separating phase specific cell cycle genes. (B) PPer (p value for periodical) and PReg (p value for regulation) for different gene sets: known cell cycle gene set, predicted cell cycle gene set, predicted non-cell cycle gene set and known non-cell cycle gene set. (C) Support from other studies. (D) Expression profiles of CDC8 from 6 experiments in Cyclebase. Red rectangle denotes the second induced cell cycle.