泊松分布问题的Boost variate_generator
泊松分布问题的Boost variate_generator
提问于 2011-12-12 12:27:58
我使用boost variate_generator从boost_1_46_1的泊松分布(显然是variate_generator的文件夹结构在不同版本之间随机变化)中生成随机数。
下面是代码片段，后面是错误报告:显然，它不识别对variate_generator的调用，并抱怨variate_generator.hpp:123: error: no type named result_type in class boost::math::poisson_distribution。
我不知道我做错了什么-一个帮助将是最感谢的！谢谢。
码
#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();
}误差
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回答 1
Stack Overflow用户
发布于 2011-12-12 17:22:57
你使用了错误的泊松分布。数学发行版似乎不适用于Boost.Random，所以请使用：
#include <boost/random/poisson_distribution.hpp>
boost::poisson_distribution<> pd(mean);
boost::variate_generator <boost::mt19937, boost::poisson_distribution<> >页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/8474310
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