用C或Python双峰分布 [英] Bimodal distribution in C or Python

问题描述

什么是根据C或Python的双峰分布，生成随机数的最简单的方法？

What's the easiest way to generate random values according to a bimodal distribution in C or Python?

我可以实现类似的通灵塔算法或箱穆勒变换，但如果有一个现成的使用库，或者更简单的算法，我不知道，那会更好。

I could implement something like the Ziggurat algorithm or a Box-Muller transform, but if there's a ready-to-use library, or a simpler algorithm I don't know about, that'd be better.

推荐答案

你是不是刚刚好转值以下两种模态分布的？

Aren't you just picking values either of two modal distributions?

http://docs.python.org/library/random.html# random.triangular

听起来像是你只是来回切换两套参数之间你的电话到三角形。

Sounds like you just toggle back and forth between two sets of parameters for your call to triangular.

def bimodal( low1, high1, mode1, low2, high2, mode2 ):
    toss = random.choice( (1, 2) )
    if toss == 1:
        return random.triangular( low1, high1, mode1 ) 
    else:
        return random.triangular( low2, high2, mode2 )

这可能就是你所需要的一切。

This may do everything you need.

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