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Thanks a lot for your explanation. That was a crucial thing to understand. I am a biologist trying to design some physiology experiments, so my math is far from developed. How about if i 'seed' the rand function at each iteration ?: for i = 1:90000 rand ('state', i); randmonoisematrix = rand (45, 45); end Intuitively, this the same as sampling a random space of values, and perchance     

Group: comp.softsys.matlab · Group Profile · Search for Random Word Generator in comp.softsys.matlab
Author: Tudor
Date: Sep 6, 2008 12:59

Tudor wrote: I find that if i run the iteration above repeatedly, to any given point ( say 43001) i get back the same randomnoise matrix as expected, however if i ask for rand ('state', 43001) randmonoisematrix = rand (45, 45) i get a completely different output. I other words, it appears that the state 0 is not followed by the state 1, 2, 3 etc. Correct. The state is used
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"Ray Vickson" wrote: > "joe" wrote: > > > > Let's say a random number generator (RNG) > > generates random numbers in the range 0 to 15 > > (ie. 16 possible values). > > > > Question: > > What size must a series of random numbers > > from this RNG minimally have to be able to > > mathematically verify whether there is a bias > > with this generator? > > > > Ie. the minimum size of the     

Group: comp.softsys.matlab · Group Profile · Search for Random Word Generator in comp.softsys.matlab
Author: Walter Roberson
Date: Sep 5, 2008 18:00

"Ray Vickson" wrote: "joe" wrote: Let's say a random number generator (RNG) generates random numbers in the range 0 to 15 (ie. 16 possible values). Question: What size must a series of random numbers from this RNG minimally have to be able to mathematically verify whether there is a bias with this generator? Ie. the minimum size of the
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On Jul 10, 8:11 pm, "joe" <j...@iamnotathome.org.invalid> wrote: > Let's say a random number generator (RNG) > generates random numbers in the range 0 to 15 > (ie. 16 possible values). > > Question: > What size must a series of random numbers > from this RNG minimally have to be able to > mathematically verify whether there is a bias > with this generator? > > Ie. the minimum size of the     

Group: rec.gambling.othergames · Group Profile · Search for Random Word Generator in rec.gambling.othergames
Author: joe
Date: Jul 11, 2008 02:22

Oh well, these numbers probably aren't correct anyway. Anyone with a more profound understanding of statistics cares to do the math properly? On second thought, the odds are more like getting the same number in Roulette for about 5 times a row (37^5.18 = 2^33), which seem pretty few. J. On 24/12/2007 09:15, Justus J. wrote (amongst others) : Yeah, the odds for a coin to produce the
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Yeah, the odds for a coin to produce the same result (head or tail) 2 times in a row, is 1 /(2*2) = 1 / (2^2). For your random number generator, using 32bit integer, it is 1 / (2^32 * 2) = 1 / (2^33). Agreed, it is not IMpossible. It is just NOT likely. If memory serves me right: 2 times the same number on a 32bit random generator: It's like doing Roulette in the casino, and NOT disputing     

Group: sci.stat.math · Group Profile · Search for Random Word Generator in sci.stat.math
Author: joe
Date: Jul 11, 2008 02:22

Skybuck Flying wrote: How so ? Different instructions have different latencies. Multiple threads executing all kinds of weird maybe even useless instructions might end-up getting slightly different ammounts of time slices etc... This could create difficult to predict random numbers ? In other words, given enough instructions threads will not execute perfectly
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Skybuck Flying wrote: > How so ? > > Different instructions have different latencies. > > Multiple threads executing all kinds of weird maybe even useless > instructions might end-up getting slightly different ammounts of time slices > etc... > > This could create difficult to predict random numbers ? > > In other words, given enough instructions threads will not execute perfectly     

Group: sci.stat.math · Group Profile · Search for Random Word Generator in sci.stat.math
Author: Ray Vickson
Date: Jul 10, 2008 23:57

On 6 Nov., 21:07, "Skybuck Flying" <s...@hotmail.com> wrote: Hello, I need a random number generator for integer range 0 to 7999. It should generate random numbers between range 0 to 7999. All operations are mod 8000. Math operations allowed: addition, subtraction, div, mod Uhm, wait, are you saying that your target machine has basic instructions for (x+y)mod 8000
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Group: alt.comp.lang.borlanddelphi · Group Profile · Search for Random Word Generator in alt.comp.lang.borlanddelphi
Author: Justus J.
Date: Dec 24, 2007 00:33

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Group: alt.comp.lang.borlanddelphi · Group Profile · Search for Random Word Generator in alt.comp.lang.borlanddelphi
Author: Justus J.
Date: Dec 24, 2007 00:15

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Group: alt.math · Group Profile · Search for Random Word Generator in alt.math
Author: Jim P
Date: Dec 20, 2007 20:15

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Group: alt.comp.lang.borlanddelphi · Group Profile · Search for Random Word Generator in alt.comp.lang.borlanddelphi
Author: Jim P
Date: Dec 20, 2007 20:15

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Group: alt.sci.math.combinatorics · Group Profile · Search for Random Word Generator in alt.sci.math.combinatorics
Author: hagman
Date: Nov 8, 2007 05:58

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