C++ weibull_distribution类代码示例

OStack程序员社区-中国程序员成长平台 › 门户 › 编程› C++›C++教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了C++中weibull_distribution类的典型用法代码示例。如果您正苦于以下问题：C++ weibull_distribution类的具体用法？C++ weibull_distribution怎么用？C++ weibull_distribution使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了weibull_distribution类的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: kurtosis_excess

inline RealType kurtosis_excess(const weibull_distribution<RealType, Policy>& dist)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::kurtosis_excess(const weibull_distribution<%1%>)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
      return result;

   RealType g1, g2, g3, g4, d, g1_2, g1_4;

   g1 = boost::math::tgamma(1 + 1 / shape, Policy());
   g2 = boost::math::tgamma(1 + 2 / shape, Policy());
   g3 = boost::math::tgamma(1 + 3 / shape, Policy());
   g4 = boost::math::tgamma(1 + 4 / shape, Policy());
   g1_2 = g1 * g1;
   g1_4 = g1_2 * g1_2;
   d = g2 - g1_2;
   d *= d;

   result = -6 * g1_4 + 12 * g1_2 * g2 - 3 * g2 * g2 - 4 * g1 * g3 + g4;
   result /= d;
   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:28，代码来源:weibull.hpp

示例2: pdf

inline RealType pdf(const weibull_distribution<RealType, Policy>& dist, const RealType& x)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::pdf(const weibull_distribution<%1%>, %1%)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
      return result;
   if(false == detail::check_weibull_x(function, x, &result, Policy()))
      return result;

   if(x == 0)
   {
      if(shape == 1)
      {
         return 1 / scale;
      }
      if(shape > 1)
      {
         return 0;
      }
      return policies::raise_overflow_error<RealType>(function, 0, Policy());
   }
   result = exp(-pow(x / scale, shape));
   result *= pow(x / scale, shape - 1) * shape / scale;

   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:32，代码来源:weibull.hpp

示例3: mean

inline RealType mean(const weibull_distribution<RealType, Policy>& dist)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::mean(const weibull_distribution<%1%>)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
      return result;

   result = scale * boost::math::tgamma(1 + 1 / shape, Policy());
   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:16，代码来源:weibull.hpp

示例4: mode

inline RealType mode(const weibull_distribution<RealType, Policy>& dist)
{
   BOOST_MATH_STD_USING  // for ADL of std function pow.

   static const char* function = "boost::math::mode(const weibull_distribution<%1%>)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
   {
      return result;
   }
   result = scale * pow((shape - 1) / shape, 1 / shape);
   return result;
}

开发者ID:GDXN，项目名称:fitsliberator，代码行数:17，代码来源:weibull.hpp

示例5: median

inline RealType median(const weibull_distribution<RealType, Policy>& dist)
{
   BOOST_MATH_STD_USING  // for ADL of std function pow.

   static const char* function = "boost::math::median(const weibull_distribution<%1%>)";

   RealType shape = dist.shape(); // Wikipedia k
   RealType scale = dist.scale(); // Wikipedia lambda

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
   {
      return result;
   }
   using boost::math::constants::ln_two;
   result = scale * pow(ln_two<RealType>(), 1 / shape);
   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:18，代码来源:weibull.hpp

示例6: variance

inline RealType variance(const weibull_distribution<RealType, Policy>& dist)
{
   RealType shape = dist.shape();
   RealType scale = dist.scale();

   static const char* function = "boost::math::variance(const weibull_distribution<%1%>)";

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
   {
      return result;
   }
   result = boost::math::tgamma(1 + 1 / shape, Policy());
   result *= -result;
   result += boost::math::tgamma(1 + 2 / shape, Policy());
   result *= scale * scale;
   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:18，代码来源:weibull.hpp

示例7: cdf

inline RealType cdf(const weibull_distribution<RealType, Policy>& dist, const RealType& x)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::cdf(const weibull_distribution<%1%>, %1%)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
      return result;
   if(false == detail::check_weibull_x(function, x, &result, Policy()))
      return result;

   result = -boost::math::expm1(-pow(x / scale, shape), Policy());

   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:19，代码来源:weibull.hpp

示例8: quantile

inline RealType quantile(const weibull_distribution<RealType, Policy>& dist, const RealType& p)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::quantile(const weibull_distribution<%1%>, %1%)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
      return result;
   if(false == detail::check_probability(function, p, &result, Policy()))
      return result;

   if(p == 1)
      return policies::raise_overflow_error<RealType>(function, 0, Policy());

   result = scale * pow(-boost::math::log1p(-p, Policy()), 1 / shape);

   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:22，代码来源:weibull.hpp

示例9: skewness

inline RealType skewness(const weibull_distribution<RealType, Policy>& dist)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::skewness(const weibull_distribution<%1%>)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result = 0;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
   {
      return result;
   }
   RealType g1, g2, g3, d;

   g1 = boost::math::tgamma(1 + 1 / shape, Policy());
   g2 = boost::math::tgamma(1 + 2 / shape, Policy());
   g3 = boost::math::tgamma(1 + 3 / shape, Policy());
   d = pow(g2 - g1 * g1, RealType(1.5));

   result = (2 * g1 * g1 * g1 - 3 * g1 * g2 + g3) / d;
   return result;
}

开发者ID:AbhinavJain13，项目名称:turicreate，代码行数:24，代码来源:weibull.hpp

示例10: pdf

inline RealType pdf(const weibull_distribution<RealType, Policy>& dist, const RealType& x)
{
   BOOST_MATH_STD_USING  // for ADL of std functions

   static const char* function = "boost::math::pdf(const weibull_distribution<%1%>, %1%)";

   RealType shape = dist.shape();
   RealType scale = dist.scale();

   RealType result;
   if(false == detail::check_weibull(function, scale, shape, &result, Policy()))
      return result;
   if(false == detail::check_weibull_x(function, x, &result, Policy()))
      return result;

   if(x == 0)
   { // Special case, but x == min, pdf = 1 for shape = 1,
      return 0;
   }
   result = exp(-pow(x / scale, shape));
   result *= pow(x / scale, shape) * shape / x;

   return result;
}

开发者ID:ANCL，项目名称:autopilot，代码行数:24，代码来源:weibull.hpp

注：本文中的weibull_distribution类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。