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Rhatv5 is one of the latest convergence diagnostics. While the packages RStan, posterior, and ArviZ use this new calculation, Stan/CmdStan does not yet. The following functionality needs to be added in order to calculate Rhatv5
[ ] rank normalize draws
[ ] inverse normal transformation
[ ] fold draws
With these, Rhatv5 is just a combination of the above functions and split chains, which is already available re Issue #2752.
Summary:
Rhatv5 is one of the latest convergence diagnostics. While the packages RStan, posterior, and ArviZ use this new calculation, Stan/CmdStan does not yet. The following functionality needs to be added in order to calculate Rhatv5
With these, Rhatv5 is just a combination of the above functions and split chains, which is already available re Issue #2752.
Additional Information:
As another reference, here is RStan's implementation: https://github.com/stan-dev/rstan/blob/develop/rstan/rstan/R/monitor.R
Current Version:
v2.21.0