[Numpy-discussion] ANN: Scipy 0.14.0 release candidate 1

2014-04-03 Thread Ralf Gommers
Hi, I'm pleased to announce the availability of the first release candidate of Scipy 0.14.0. Please try this RC and report any issues on the scipy-dev mailing list. A significant number of fixes for scipy.sparse went in after the beta release, so users of that module may want to test this release

Re: [Numpy-discussion] Standard Deviation (std): Suggested change for "ddof" default value

2014-04-03 Thread josef . pktd
On Thu, Apr 3, 2014 at 2:21 PM, Bago wrote: > > > >> >> Sturla >> >> P.S. Personally I am not convinced "unbiased" is ever a valid argument, as >> the biased estimator has smaller error. This is from experience in >> marksmanship: I'd rather shoot a tight series with small systematic error >> than

Re: [Numpy-discussion] Standard Deviation (std): Suggested change for "ddof" default value

2014-04-03 Thread Bago
> Sturla > > P.S. Personally I am not convinced "unbiased" is ever a valid argument, as > the biased estimator has smaller error. This is from experience in > marksmanship: I'd rather shoot a tight series with small systematic error > than scatter my bullets wildly but "unbiased" on the target. It

Re: [Numpy-discussion] Standard Deviation (std): Suggested change for "ddof" default value

2014-04-03 Thread josef . pktd
On Wed, Apr 2, 2014 at 10:06 AM, Sturla Molden wrote: > wrote: > >> pandas came later and thought ddof=1 is worth more than consistency. > > Pandas is a data analysis package. NumPy is a numerical array package. > > I think ddof=1 is justified for Pandas, for consistency with statistical > softwa

[Numpy-discussion] mtrand normal sigma >= 0 too restrictive

2014-04-03 Thread Neal Becker
Traceback (most recent call last): File "./test_inroute_frame.py", line 1694, in run_line (sys.argv) File "./test_inroute_frame.py", line 1690, in run_line return run (opt, cmdline) File "./test_inroute_frame.py", line 1115, in run burst.tr (xbits, freq=freqs[i]+burst.freq_offset

Re: [Numpy-discussion] Default builds of OpenBLAS development branch are now fork safe

2014-04-03 Thread Olivier Grisel
2014-04-03 14:56 GMT+02:00 Julian Taylor : > FYI, binaries linking openblas should add this patch in some way: > https://github.com/numpy/numpy/pull/4580 > > Cliffs: linking OpenBLAS prevents parallelization via threading or > multiprocessing. > > just wasted a bunch of time figuring that out ... (

Re: [Numpy-discussion] Standard Deviation (std): Suggested change for "ddof" default value

2014-04-03 Thread Sturla Molden
wrote: > pandas came later and thought ddof=1 is worth more than consistency. Pandas is a data analysis package. NumPy is a numerical array package. I think ddof=1 is justified for Pandas, for consistency with statistical software (SPSS et al.) For NumPy, there are many computational tasks whe

Re: [Numpy-discussion] Standard Deviation (std): Suggested change for "ddof" default value

2014-04-03 Thread Sturla Molden
alex wrote: > I don't have any opinion about this debate, but I love the > justification in that thread "Any surprise that is created by the > different default should be mitigated by the fact that it's an > opportunity to learn something about what you are doing." That is so true. Sturla _

Re: [Numpy-discussion] ANN: NumPy 1.8.1 release

2014-04-03 Thread David Cournapeau
On Wed, Apr 2, 2014 at 7:52 AM, Matthew Brett wrote: > Hi, > > On Tue, Apr 1, 2014 at 4:46 PM, David Cournapeau > wrote: > > > > > > > > On Wed, Apr 2, 2014 at 12:36 AM, Nathaniel Smith wrote: > >> > >> On Tue, Apr 1, 2014 at 11:58 PM, David Cournapeau > >> wrote: > >> > On Tue, Apr 1, 2014 at

Re: [Numpy-discussion] Default builds of OpenBLAS development branch are now fork safe

2014-04-03 Thread Julian Taylor
FYI, binaries linking openblas should add this patch in some way: https://github.com/numpy/numpy/pull/4580 Cliffs: linking OpenBLAS prevents parallelization via threading or multiprocessing. just wasted a bunch of time figuring that out ... (though its well documented in numerous stackoverflow