On 2016-02-12 04:15, Tim Peters wrote:
[Greg Ewing <greg.ew...@canterbury.ac.nz>]
The Mersenne Twister is no longer regarded as quite state-of-the art
because it can get into states that produce long sequences that are
not very random.
There is a variation on MT called WELL that has better properties
in this regard. Does anyone think it would be a good idea to replace
MT with WELL as Python's default rng?
I don't think so, because I've seen no groundswell of discontent about
the Twister among Python users. Perhaps I'm missing some?
Well me, but I'm mostly focused on numpy's PRNG, which is proceeding apace.
https://github.com/bashtage/ng-numpy-randomstate
While I am concerned about MT's BigCrush failures, what makes me most
discontented is not having multiple guaranteed-independent streams.
It's prudent to wait for someone else to find the early surprises in
PCG and Random123 too ;-)
Quite so!
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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