Stabilization: Correlated and anticorrelated features. The expression data from the ESR data set for regulators USV1, PPT1 and XBP1 are compared. All three are highly predictive parents. Without stabilization, they appear in different nodes of the learned trees. With stabilization, they are grouped together in robust nodes. Stabilization thus helps to preserve relevant information about correlated features, improving the biological interpretability during post-processing analysis.