Re: [Numpy-discussion] NumPy 1.12.0 release

2017-01-17 Thread Nathan Goldbaum
I've seen reports on the anaconda mailing list of people seeing similar speed ups when they compile e.g. Numpy with a recent gcc. Anaconda has the same issue as manylinux in that they need to use versions of GCC available on CentOS 5. Given the upcoming official EOL for CentOS5, it might make sens

Re: [Numpy-discussion] NumPy 1.12.0 release

2017-01-17 Thread Jerome Kieffer
On Tue, 17 Jan 2017 08:56:42 -0500 Neal Becker wrote: > I've installed via pip3 on linux x86_64, which gives me a wheel. My > question is, am I loosing significant performance choosing this pre-built > binary vs. compiling myself? For example, my processor might have some more > features tha

Re: [Numpy-discussion] Question about numpy.random.choice with probabilties

2017-01-17 Thread josef . pktd
[1,2]+[2,3] = >>>> 0.2+0.6 = 0.8 = 2*P2, etc. >>>> >>>> However, the algorithm in numpy.random.choice's replace=False >>>> generates, if >>>> I understand correctly, different probabilities for the outcomes: I >>>> believe

Re: [Numpy-discussion] [SciPy-Dev] NumPy 1.12.0 release

2017-01-17 Thread Nathaniel Smith
On Tue, Jan 17, 2017 at 3:47 PM, Neal Becker wrote: > Matthew Brett wrote: > >> Hi, >> >> On Tue, Jan 17, 2017 at 5:56 AM, Neal Becker wrote: >>> Charles R Harris wrote: >>> Hi All, I'm pleased to announce the NumPy 1.12.0 release. This release supports Python 2.7 and 3.4-3.6.

Re: [Numpy-discussion] [SciPy-Dev] NumPy 1.12.0 release

2017-01-17 Thread Matthew Brett
On Tue, Jan 17, 2017 at 3:47 PM, Neal Becker wrote: > Matthew Brett wrote: > >> Hi, >> >> On Tue, Jan 17, 2017 at 5:56 AM, Neal Becker wrote: >>> Charles R Harris wrote: >>> Hi All, I'm pleased to announce the NumPy 1.12.0 release. This release supports Python 2.7 and 3.4-3.6.

Re: [Numpy-discussion] Question about numpy.random.choice with probabilties

2017-01-17 Thread aleba...@gmail.com
; I understand correctly, different probabilities for the outcomes: I >>> believe >>> in this case it generates [1,2] at probability 0.2, [1,3] also >>> 0.2333, >>> and [2,3] at probability 0.5. >>> >>> My question is how do

Re: [Numpy-discussion] Question about numpy.random.choice with probabilties

2017-01-17 Thread josef . pktd
;> If we get [1,2] at probability 0.2 and [1,3] at probability 0.2333, >>> then the expect number of "1" results we'll get per drawing is 0.2 + >>> 0.2333 = 0.4, and similarly for "2" the expected number 0.7666, and for >>> "3

Re: [Numpy-discussion] Question about numpy.random.choice with probabilties

2017-01-17 Thread Nadav Har'El
;2" the expected number 0.7666, and >> for >> "3" 0.7. As you can see, the proportions are off: Item 2 is NOT twice >> common than item 1 as we originally desired (we asked for probabilities >> 0.2, 0.4, 0.4 for the individual items!). >> >> >

Re: [Numpy-discussion] NumPy 1.12.0 release

2017-01-17 Thread Matthew Brett
Hi, On Tue, Jan 17, 2017 at 5:56 AM, Neal Becker wrote: > Charles R Harris wrote: > >> Hi All, >> >> I'm pleased to announce the NumPy 1.12.0 release. This release supports >> Python 2.7 and 3.4-3.6. Wheels for all supported Python versions may be >> downloaded from PiPY >>

[Numpy-discussion] Question about numpy.random.choice with probabilties

2017-01-17 Thread aleba...@gmail.com
El > n...@scylladb.com > -- next part -- > An HTML attachment was scrubbed... > URL: <https://mail.scipy.org/pipermail/numpy-discussion/ > attachments/20170117/d1f0a1db/attachment-0001.html> > >

[Numpy-discussion] [REL] matplotlib v2.0.0

2017-01-17 Thread Thomas Caswell
Folks, We are happy to announce the release of (long delayed) matplotlib 2.0! This release completely overhauls the default style of the plots. The source tarball and wheels for Mac, Win, and manylinux for python 2.7, 3.4-3.6 are available on pypi pip install --upgrade matplotlib and conda p

Re: [Numpy-discussion] NumPy 1.12.0 release

2017-01-17 Thread Neal Becker
Charles R Harris wrote: > Hi All, > > I'm pleased to announce the NumPy 1.12.0 release. This release supports > Python 2.7 and 3.4-3.6. Wheels for all supported Python versions may be > downloaded from PiPY > , the tarball > and zip file

[Numpy-discussion] Question about numpy.random.choice with probabilties

2017-01-17 Thread Nadav Har'El
Hi, I'm looking for a way to find a random sample of C different items out of N items, with a some desired probabilty Pi for each item i. I saw that numpy has a function that supposedly does this, numpy.random.choice (with replace=False and a probabilities array), but looking at the algorithm actu