Estimate of model parameters from real datasets.(a) Model parameters estimated from mouse dataset. (b) Model parameters estimated from TCGA basal breast cancer dataset. For most parameters, we record 900 samples (thin = 10, i.e., record every 10th sample) after the first 100 burn-in samples. An exception was made for learning parameter τ in TCGA dataset to reduce memory usage in estimating Poisson-Lognormal regression model (200 samples were recorded, among which first 50 were discarded as burn-in).