Boost variate_generator用於泊松分佈問題

我使用boost variate_generator從boost_1_46_1的泊松分佈生成隨機數（顯然variate_generator的文件夾結構在版本之間隨機更改）。Boost variate_generator用於泊松分佈問題

下面的代碼片段後面跟着錯誤報告：顯然它不識別對variate_generator的調用並且抱怨variate_generator.hpp:123: error: no type named result_type in class boost::math::poisson_distribution。

我搞不清楚我做錯了什麼 - 一個幫助將不勝感激！謝謝。

代碼

#include <boost/random/variate_generator.hpp> 
#include <boost/random/mersenne_twister.hpp> 
#include <boost/math/distributions/poisson.hpp> 
using namespace boost; 

double poiss(double mean) { 
static boost::mt19937 randgen(0); 
static boost::math::poisson_distribution <double> pd(mean); 
    static boost::variate_generator <boost::mt19937&, boost::math::poisson_distribution <double> > generator(randgen, pd); <- line CnvSeg.c:46 
return (double) generator(); 
}

錯誤

CnvSeg.c:47: error: no match for call to â(boost::variate_generator<boost::mt19937&, boost::math::poisson_distribution<double, boost::math::policies::policy<boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy> > >)()â 
/home/craczy/boost_1_46_1/include/boost/random/variate_generator.hpp: In constructor âboost::variate_generator<Engine, Distribution>::variate_generator(Engine, Distribution) [with Engine = boost::mt19937&, Distribution = boost::math::poisson_distribution<double, boost::math::policies::policy<boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy> >]â: 
CnvSeg.c:46: instantiated from here 
/home/craczy/boost_1_46_1/include/boost/random/variate_generator.hpp:134: error: using invalid field âboost::variate_generator<Engine, Distribution>::_engâ 
/home/craczy/boost_1_46_1/include/boost/random/variate_generator.hpp:123: error: no type named âresult_typeâ in âclass boost::math::poisson_distribution<double, boost::math::policies::policy<boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy> >â

來源

2011-12-12 sivakhno

您使用了錯誤的泊松分佈。 boost :: math分佈似乎不適用於Boost.Random，所以使用：

#include <boost/random/poisson_distribution.hpp> 
boost::poisson_distribution<> pd(mean); 
boost::variate_generator <boost::mt19937, boost::poisson_distribution<> >

來源

2011-12-12 17:22:57 thiton

Boost variate_generator用於泊松分佈問題

回答

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