[Rd] Kinderman-Ramage (PR#2846)
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Fri Apr 25 15:37:58 MEST 2003
Prof Brian Ripley <ripley at stats.ox.ac.uk> writes:
> Unfortunately it was the default prior to 1.7.0, so for reproducibility I
> think we can't change this. We could add a new option, a corrected
> version, but is it worth it? I would definitely add a warning if the
> buggy version was selected, and perhaps make it an error to select it via
> RNGkind (rather than RNGversion or a saved .Random.seed).
We do normally correct errors leading to incorrect values. I mean, if
we found a bug in qnorm() we wouldn't hesitate to fix it even if
though it affects the Inversion RNG, would we?
How about this: Keep the old generator, but call it "K-R-bug" or so.
Fix the real K-R. Make K-R-bug the version set by RNGversion. One or
more of the methods to set it will generate warnings.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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