MergeDependentParameters

This action will merge all dependent (non-independent) parameters that match the name filter in some workspace. This is useful to avoid non-invertible hesse-matrices, especially in scenarios where nuisance parameters are added explicitly (as for theory uncertainties) while at the same time applying some automatic bin merging, as this will merge any two parameters that affect only a single bin, if that bin is the same one.

Usage:

+MergeDependentParameters {
  +Morphing {
    <filter={"*stat_uncert*"}>
  }
}