Thanks, Sturla, you've confirmed what I thought was the case (and explained
more thoroughly the answer others gave more succinctly, but also more
opaquely). :-)
DG
On Sat, Nov 7, 2009 at 11:40 AM, Sturla Molden stu...@molden.no wrote:
David Cournapeau wrote:
On Fri, Nov 6, 2009 at 6:54 AM,
David Cournapeau wrote:
On Fri, Nov 6, 2009 at 6:54 AM, David Goldsmith d.l.goldsm...@gmail.com
wrote:
Interesting thread, which leaves me wondering two things: is it documented
somewhere (e.g., at the IEEE site) precisely how many *decimal* mantissae
are representable using the 64-bit
Interesting thread, which leaves me wondering two things: is it documented
somewhere (e.g., at the IEEE site) precisely how many *decimal* mantissae
are representable using the 64-bit IEEE standard for float representation
(if that makes sense); and are such decimal mantissae uniformly
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which leaves me wondering two things: is it
documented
somewhere (e.g., at the IEEE site) precisely how many *decimal*
mantissae
are representable using the 64-bit IEEE standard for float
representation
(if that
On Thu, Nov 5, 2009 at 4:26 PM, David Warde-Farley d...@cs.toronto.eduwrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which leaves me wondering two things: is it
documented
somewhere (e.g., at the IEEE site) precisely how many *decimal*
mantissae
are
On Thu, Nov 5, 2009 at 6:36 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 4:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which leaves me wondering two things: is it
documented
On Thu, Nov 5, 2009 at 7:04 PM, josef.p...@gmail.com wrote:
On Thu, Nov 5, 2009 at 6:36 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 4:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
On Thu, Nov 5, 2009 at 9:23 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 7:04 PM, josef.p...@gmail.com wrote:
On Thu, Nov 5, 2009 at 6:36 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 4:26 PM, David Warde-Farley
On Fri, Nov 6, 2009 at 6:54 AM, David Goldsmith d.l.goldsm...@gmail.com wrote:
Interesting thread, which leaves me wondering two things: is it documented
somewhere (e.g., at the IEEE site) precisely how many *decimal* mantissae
are representable using the 64-bit IEEE standard for float
On Thu, Nov 5, 2009 at 7:53 PM, josef.p...@gmail.com wrote:
On Thu, Nov 5, 2009 at 9:23 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 7:04 PM, josef.p...@gmail.com wrote:
On Thu, Nov 5, 2009 at 6:36 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
2009/11/5 David Goldsmith d.l.goldsm...@gmail.com:
On Thu, Nov 5, 2009 at 3:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which leaves me wondering two things: is it
documented
somewhere (e.g., at the IEEE site)
On Thu, Nov 5, 2009 at 10:42 PM, David Goldsmith
d.l.goldsm...@gmail.com wrote:
On Thu, Nov 5, 2009 at 3:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which leaves me wondering two things: is it
documented
On Thu, Nov 5, 2009 at 10:28 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 7:53 PM, josef.p...@gmail.com wrote:
On Thu, Nov 5, 2009 at 9:23 PM, Charles R Harris
charlesr.har...@gmail.com wrote:
On Thu, Nov 5, 2009 at 7:04 PM, josef.p...@gmail.com wrote:
2009/11/5 josef.p...@gmail.com:
On Thu, Nov 5, 2009 at 10:42 PM, David Goldsmith
d.l.goldsm...@gmail.com wrote:
On Thu, Nov 5, 2009 at 3:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which leaves me wondering two
On Thu, Nov 5, 2009 at 9:14 PM, josef.p...@gmail.com wrote:
On Thu, Nov 5, 2009 at 10:42 PM, David Goldsmith
d.l.goldsm...@gmail.com wrote:
On Thu, Nov 5, 2009 at 3:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting
On Thu, Nov 5, 2009 at 8:07 PM, Anne Archibald peridot.face...@gmail.comwrote:
2009/11/5 David Goldsmith d.l.goldsm...@gmail.com:
On Thu, Nov 5, 2009 at 3:26 PM, David Warde-Farley d...@cs.toronto.edu
wrote:
On 5-Nov-09, at 4:54 PM, David Goldsmith wrote:
Interesting thread, which
2009/11/1 Thomas Robitaille thomas.robitai...@gmail.com:
Hi,
I'm trying to generate random 64-bit integer values for integers and
floats using Numpy, within the entire range of valid values for that
type. To generate random 32-bit floats, I can use:
Others have addressed why this is giving
Hi,
I'm trying to generate random 64-bit integer values for integers and
floats using Numpy, within the entire range of valid values for that
type. To generate random 32-bit floats, I can use:
np.random.uniform(low=np.finfo(np.float32).min,high=np.finfo
(np.float32).max,size=10)
which
Thomas Robitaille skrev:
np.random.random_integers(np.iinfo(np.int32).min,high=np.iinfo
(np.int32).max,size=10)
which gives
array([-1506183689, 662982379, -1616890435, -1519456789, 1489753527,
-604311122, 2034533014, 449680073, -444302414,
-1924170329])
This fails
Thomas Robitaille wrote:
Hi,
I'm trying to generate random 64-bit integer values for integers and
floats using Numpy, within the entire range of valid values for that
type. To generate random 32-bit floats, I can use:
np.random.uniform(low=np.finfo(np.float32).min,high=np.finfo
On Sun, Nov 1, 2009 at 10:20 PM, David Cournapeau
da...@ar.media.kyoto-u.ac.jp wrote:
Thomas Robitaille wrote:
Hi,
I'm trying to generate random 64-bit integer values for integers and
floats using Numpy, within the entire range of valid values for that
type. To generate random 32-bit floats,
On Sun, Nov 1, 2009 at 20:57, Thomas Robitaille
thomas.robitai...@gmail.com wrote:
Hi,
I'm trying to generate random 64-bit integer values for integers and
floats using Numpy, within the entire range of valid values for that
type.
64-bit and larger integers could be done, but it requires
josef.p...@gmail.com wrote:
array([ Inf, Inf, Inf, Inf, Inf, Inf, Inf, Inf, Inf, Inf])
might actually be the right answer if you want a uniform distribution
on the real line.
Does it make sense to define a uniform random variable whose range is
the extended real line ? It would not
Robert Kern skrev:
64-bit and larger integers could be done, but it requires
modification. The integer distributions were written to support C
longs, not anything larger. You could also use .bytes() and
np.fromstring().
But as of Python 2.6.4, even 32-bit integers fail, at least on
On Sun, Nov 1, 2009 at 22:17, Sturla Molden stu...@molden.no wrote:
Robert Kern skrev:
64-bit and larger integers could be done, but it requires
modification. The integer distributions were written to support C
longs, not anything larger. You could also use .bytes() and
np.fromstring().
But
Sturla Molden wrote:
Robert Kern skrev:
64-bit and larger integers could be done, but it requires
modification. The integer distributions were written to support C
longs, not anything larger. You could also use .bytes() and
np.fromstring().
But as of Python 2.6.4, even 32-bit
Robert Kern skrev:
Then let me clarify: it was written to support integer ranges up to
sys.maxint. Absolutely, it would be desirable to extend it.
I know, but look at this:
import sys
sys.maxint
2147483647
2**31-1
2147483647L
sys.maxint becomes a long, which is what confuses mtrand.
On Sun, Nov 1, 2009 at 10:55 PM, David Cournapeau
da...@ar.media.kyoto-u.ac.jp wrote:
josef.p...@gmail.com wrote:
array([ Inf, Inf, Inf, Inf, Inf, Inf, Inf, Inf, Inf, Inf])
might actually be the right answer if you want a uniform distribution
on the real line.
Does it make sense
Robert Kern skrev:
Then let me clarify: it was written to support integer ranges up to
sys.maxint. Absolutely, it would be desirable to extend it.
Actually it only supports integers up to sys.maxint-1, as
random_integers call randint. random_integers includes the upper range,
but randint
Sturla Molden skrev:
Robert Kern skrev:
Then let me clarify: it was written to support integer ranges up to
sys.maxint. Absolutely, it would be desirable to extend it.
Actually it only supports integers up to sys.maxint-1, as
random_integers call randint. random_integers
On Sun, Nov 1, 2009 at 23:14, Sturla Molden stu...@molden.no wrote:
I'll call this a bug.
Yes.
--
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.
--
josef.p...@gmail.com wrote:
No, it wouldn't be a proper distribution. However in Bayesian analysis
it is used as an improper (diffuse) prior
Ah, right - I wonder how this is handled rigorously, though. I know some
basics of Bayesian statistics, but I don't much about Bayesian
statistics from a
Sturla Molden wrote:
Sturla Molden skrev:
Robert Kern skrev:
Then let me clarify: it was written to support integer ranges up to
sys.maxint. Absolutely, it would be desirable to extend it.
Actually it only supports integers up to sys.maxint-1, as
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