UMPIRE: Ultimate Microarray Prediction, Inference, and Reality Engine
A suite of microarray simulation software which includes additive and multiplicative noise, mixture of expressed and unexpressed genes, and uses statistical distributions to capture differences in mean expression and in standard deviation both within groups and between groups of samples. Finally, it incorporates a simple block correlation structure between genes.
For a complete list of functions, use
library(help = 'Umpire').