[Numpy-discussion] Re: random number facilities in numarray and main Python libs
oliphant at ee.byu.edu
Tue Sep 28 11:11:12 EDT 2004
Faheem Mitha wrote:
>On Tue, 07 Sep 2004 16:35:11 -0700, Robert Kern <rkern at ucsd.edu> wrote:
>>Faheem Mitha wrote:
>>>Are the random number facilities provided by numarray.random_array
>>>superior to those provided to those provided by the random module in the
>>>Python library? They certainly seem more extensive, and I like the
>>>If so, why not replace the random module by the equivalent functionality
>>>from numarray.random_array, and have everyone use the same random number
>>>generator? Or is this impossible for practical reasons?
>>numarray.random_array can generate arrays full of random numbers.
>>Standard Python's random does not and will not until numarray is part of
>>the standard library. Standard Python's random also uses the Mersenne
>>Twister algorithm which is, by most accounts, superior to RANLIB's
>>algorithm, so I for one would object to replacing it with numarray's
>>I do intend to implement the Mersenne Twister algorithm for SciPy's PRNG
>>facilities (on some unspecified weekend). I will also try to code
>>something up for numarray, too.
>Does SciPy have its own random num facilities too? It would easier to
>just consolidate all these efforts, I would have thought.
I would agree, which is why I don't like the current move to put all
kinds of processing facility into numarray. It is creating two
parallel efforts and causing a split in the community.
The purpose of SciPy was to collect scientific algorithms together
(scipy's random number facilities are borrowed and enhanced from Numeric
--- same place numarray comes from).
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