Summary: In the omic era, one of the main aims is to discover groups of functionally related genes that drive the difference between different conditions. To this end, a plethora of potentially useful multivariate statistical approaches has been proposed, but their evaluation is hindered by the absence of a gold standard. Here, we propose a method for simulating biological data – gene expression, RPKM/FPKM or protein abundances – from two conditions, namely, a reference condition and a perturbation of it. Our approach is built upon probabilistic graphical models and is thus especially suited for testing topological approaches.Availability and Implementation: The simPATHy is an R package, it is open source and freely available on CRAN.Contacts: firstname.lastname@example.org or email@example.comSupplementary Information: Supplementary data are available at Bioinformatics online.
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