Update running statistics with a single patch of values.
This is the core Welford step. mask values of 1 indicate padding positions that must be ignored entirely.
mask
A tuple [new_stats, new_stats] matching the Python convention where the second element is a convenience copy.
[new_stats, new_stats]
Update running statistics with a single patch of values.
This is the core Welford step.
maskvalues of 1 indicate padding positions that must be ignored entirely.