[SciPy-dev] New random capability [was: Release of scipy core...]

Charles R Harris charles.harris at sdl.usu.edu
Wed Sep 28 16:22:07 CDT 2005


On Wed, 2005-09-28 at 13:36 -0700, Robert Kern wrote:
> Charles R Harris wrote:
> > On Wed, 2005-09-28 at 14:30 -0400, Tom Loredo wrote:
> > 
> >>Robert,
> >>
> >>Wow, thanks for what sounds like some well thought out improvements
> >>in the "random" capability of scipy.  Working on this has been on
> >>my todo list, but at lower priority than other things.  I think 
> >>it's in more capable hands in any case!
> >>
> >>>I also think some provision for setting a simple seed, perhaps just a long,
> >>>is useful for testing when it is nice to have a repeatable sequences.
> >>
> >>Actually, I think some users need more than this (I certainly speak
> >>at least for myself!).  I think there should be capability to store
> >>the full current state, and restore it.
> > 
> > In the Mersenne Twister this also requires storing an index into the
> > current state. The MWC type generators need to store the value of the
> > carry as well. Perhaps all that is needed is a way to serialize the
> > generator or make a copy.
> 
> Ack! I forgot about the index.

;)




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