On 1/13/07, Keith Goodman <[EMAIL PROTECTED]> wrote: > On 1/13/07, Sebastian Haase <[EMAIL PROTECTED]> wrote: > > On 1/13/07, Keith Goodman <[EMAIL PROTECTED]> wrote: > > > On 1/11/07, Robert Kern <[EMAIL PROTECTED]> wrote: > > > > Keith Goodman wrote: > > > > > Why is the first element of the permutation always the same? Am I > > > > > using random.permutation in the right way? > > > > > > > > >>> M.__version__ > > > > > '1.0rc1' > > > > > > > > This has been fixed in more recent versions. > > > > > > > > http://projects.scipy.org/scipy/numpy/ticket/374 > > > > > > I don't see any unit tests for numpy.random. I guess randomness is hard > > > to test. > > > > > > Would it help to seed the random number generator and at least check > > > that you get the same result you got before? No existing problems > > > would be found. But new ones might be caught. > > > > > Hi, > > Is it guaranteed that a given seed produces the same sequence of > > rand-number between different platforms ? > > I thought this might only be guaranteed for "any given computer" to > > reproduce the same numbers. > > I hope, and expect, that it is system independent. > > Here's what I get: > > >> rs = numpy.random.RandomState([123, 901, 789]) > >> rs.randn(4,1) > > array([[ 0.76072026], > [ 1.27712191], > [ 0.03497453], > [ 0.09056668]]) > >> rs.rand(4,1) > > array([[ 0.184306 ], > [ 0.58967936], > [ 0.52425903], > [ 0.33389408]]) > >> numpy.__version__ > '1.0.1' > > Linux kel 2.6.18-3-686 #1 SMP Mon Dec 4 16:41:14 UTC 2006 i686 GNU/Linux import numpy rs = numpy.random.RandomState([123, 901, 789]) rs.randn(4,1) [[ 0.76072026] [ 1.27712191] [ 0.03497453] [ 0.09056668]] rs.rand(4,1) [[ 0.184306 ] [ 0.58967936] [ 0.52425903] [ 0.33389408]] numpy.__version__ '1.0rc1'
Windows XP- pentium4 - (non current numpy) - Looks promising - but how about PowerPC macs ... -Sebastian _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
