升压位数函数（C ++） [英] Quantile functions in boost (C++)

问题描述

从文档提振来看，似乎提供正常和Gamma分布分位数函数（CDF反函数），但它不是我清楚，我怎么可以实际使用它们。可能有人贴一个例子吗？

Judging from the documentation boost seems to offer quantile functions (inverse cdf functions) for both normal and gamma distributions, but its not clear for me how can I actually use them. Could someone paste an example please?

推荐答案

分位数计算实现为一个自由的功能。这里有一个例子：

The quantile calculation is implemented as a free function. Here's an example:

#include <boost/math/distributions/normal.hpp>

boost::math::normal dist(0.0, 1.0);

// 95% of distribution is below q:
double q = quantile(dist, 0.95);

您也可以使用get（右位数）补：

You can also get the complement (quantile from the right) using:

// 95% of distribution is above qc:
double qc = quantile(complement(dist, 0.05));

有一些类似工作的例子在这里：

There are some similar worked examples here:

<一个href=\"http://www.boost.org/doc/libs/1_46_1/libs/math/doc/sf_and_dist/html/math_toolkit/dist/stat_tut/weg.html\">http://www.boost.org/doc/libs/1_46_1/libs/math/doc/sf_and_dist/html/math_toolkit/dist/stat_tut/weg.html

编辑：不需要感谢ADL免费功能上的命名空间。

don't need namespaces on the free functions thanks to ADL

这篇关于升压位数函数（C ++）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！