在计算机上，怎么产生非伪随机数呀？
在计算机上，怎么产生非伪随机数呀？
you mean not "pseudo random numbers"?
yes.
I don't know any existing algorithm generating non-pseudo random numberbut what's the application that must require non-pseudo random number?
nothing, just for fun.
as every instruction is determinedso it's difficult to invent some algorithm that generates non-pseudo random number under the current architecture.
I feel it's enough to use pseudo random number to simulate the randomness, with seed set randomly.
A more interesting question is this:
Does random really exist?
Think about tossing a coin, the result (head or tail) is determined by the initial speed, gravity, wind direction, table material etc. If the modeling of the enviornment is complete, the result will always be the same under the same parameters.
So the randomness comes from the inability of describing the world completely, is that true?
maybe
"So the randomness comes from the inability of describing the world completely, is that true?"
I think you are right. However, if the "inability of describing the world completely" is certain to us, random exist, to us.
Maybe, randomness is not universal, but relative to the object concerned.
In a computer, although every instruction is determined, environment out of the world is not. eg. consider we are writing an application that throw a dice when the user click a button. We may use clock() to generate a random number.
Here the randomness is determined by time. Assuming a user (or device) can not distinguish time from 1ms. And our computer's clock() has resolution of 1/6 ms. Shall we treat it as a true random (to the player).
I think you are right. However, if the "inability of describing the world completely" is certain to us, random exist, to us.
Maybe, randomness is not universal, but relative to the object concerned.
In a computer, although every instruction is determined, environment out of the world is not. eg. consider we are writing an application that throw a dice when the user click a button. We may use clock() to generate a random number.
Here the randomness is determined by time. Assuming a user (or device) can not distinguish time from 1ms. And our computer's clock() has resolution of 1/6 ms. Shall we treat it as a true random (to the player).
华新中文网致力于为新加坡留学生、工作人士及华人同胞提供交流空间和服务平台
关于我们┊ 广告服务┊ 联系方式┊ 华新博客┊ 经典怀旧┊ 投递作品
Huasing Association 1999 - 2013
