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An alternative (and supposedly better way to go) than using umami for preprocessing is to use the standalone umami-preprocessing (UPP).
Follow the installation instructions on git. This is unfortunately hosted on GitHub, so we cannot add it to the bjr-slac GitLab group 
A working fork
is available under Brendon's account (master and contains UPP configs for each sample configuration (bjr branch). These do not yet implement resampling, but there are 2 methods that can be explored (resampling and reweighting).
You can cut to the chase by doing conda activate upp, or follow the docs for straightforward installation.
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