Made test case self contained and added start of "gold standard" reference build.
[SVN r50220]
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@ -73,7 +73,7 @@ doxygen tagfile
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|||
# generate .png images for the LaTeX formulas embedded in the doc comments.
|
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doxygen statsdoc.html
|
||||
:
|
||||
../../boost/accumulators/statistics/weighted_tail_quantile.hpp
|
||||
weighted_tail_quantile.hpp
|
||||
:
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<dependency>latex.check
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<dependency>dvips.check
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@ -115,7 +115,7 @@ make statsdoclatex.tag
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|||
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||||
doxygen statsdoc
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:
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||||
../../boost/accumulators/statistics/weighted_tail_quantile.hpp
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weighted_tail_quantile.hpp
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||||
:
|
||||
<doxygen:param>EXTRACT_ALL=YES
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<doxygen:param>"PREDEFINED=\"BOOST_ACCUMULATORS_DOXYGEN_INVOKED=1\" \\
|
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@ -155,6 +155,7 @@ boostbook standalone
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<xsl:param>toc.section.depth=2
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<xsl:param>chunk.section.depth=1
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<xsl:param>boost.root=../../..
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<format>html:<xsl:param>callout.graphics.path=../../src/images/callouts/
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<xsl:param>boost.libraries=../../../libs/libraries.htm
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<xsl:param>navig.graphics=1
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<xsl:param>html.stylesheet=../../../doc/html/boostbook.css
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doc/test/gold/images/remez-2.png
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doc/test/weighted_tail_quantile.hpp
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@ -0,0 +1,144 @@
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|||
///////////////////////////////////////////////////////////////////////////////
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||||
// weighted_tail_quantile.hpp
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||||
//
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||||
// Copyright 2006 Daniel Egloff, Olivier Gygi. Distributed under the Boost
|
||||
// Software License, Version 1.0. (See accompanying file
|
||||
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
|
||||
#ifndef BOOST_ACCUMULATORS_STATISTICS_WEIGHTED_TAIL_QUANTILE_HPP_DE_01_01_2006
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||||
#define BOOST_ACCUMULATORS_STATISTICS_WEIGHTED_TAIL_QUANTILE_HPP_DE_01_01_2006
|
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||||
#include <vector>
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||||
#include <limits>
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#include <functional>
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#include <sstream>
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#include <stdexcept>
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#include <boost/throw_exception.hpp>
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#include <boost/parameter/keyword.hpp>
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#include <boost/mpl/placeholders.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/accumulators/numeric/functional.hpp>
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||||
#include <boost/accumulators/framework/depends_on.hpp>
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#include <boost/accumulators/framework/accumulator_base.hpp>
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#include <boost/accumulators/framework/extractor.hpp>
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#include <boost/accumulators/framework/parameters/sample.hpp>
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||||
#include <boost/accumulators/statistics_fwd.hpp>
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||||
#include <boost/accumulators/statistics/tail.hpp>
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#include <boost/accumulators/statistics/tail_quantile.hpp>
|
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#include <boost/accumulators/statistics/parameters/quantile_probability.hpp>
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#ifdef _MSC_VER
|
||||
# pragma warning(push)
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# pragma warning(disable: 4127) // conditional expression is constant
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||||
#endif
|
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|
||||
namespace boost { namespace accumulators
|
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{
|
||||
|
||||
namespace impl
|
||||
{
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
// weighted_tail_quantile_impl
|
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// Tail quantile estimation based on order statistics of weighted samples
|
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/**
|
||||
@brief Tail quantile estimation based on order statistics of weighted samples (for both left and right tails)
|
||||
|
||||
An estimator \f$\hat{q}\f$ of tail quantiles with level \f$\alpha\f$ based on order statistics
|
||||
\f$X_{1:n} \leq X_{2:n} \leq\dots\leq X_{n:n}\f$ of weighted samples are given by \f$X_{\lambda:n}\f$ (left tail)
|
||||
and \f$X_{\rho:n}\f$ (right tail), where
|
||||
|
||||
\f[
|
||||
\lambda = \inf\left\{ l \left| \frac{1}{\bar{w}_n}\sum_{i=1}^{l} w_i \geq \alpha \right. \right\}
|
||||
\f]
|
||||
|
||||
and
|
||||
|
||||
\f[
|
||||
\rho = \sup\left\{ r \left| \frac{1}{\bar{w}_n}\sum_{i=r}^{n} w_i \geq (1 - \alpha) \right. \right\},
|
||||
\f]
|
||||
|
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\f$n\f$ being the number of samples and \f$\bar{w}_n\f$ the sum of all weights.
|
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|
||||
@param quantile_probability
|
||||
*/
|
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template<typename Sample, typename Weight, typename LeftRight>
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||||
struct weighted_tail_quantile_impl
|
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: accumulator_base
|
||||
{
|
||||
typedef typename numeric::functional::average<Weight, std::size_t>::result_type float_type;
|
||||
// for boost::result_of
|
||||
typedef Sample result_type;
|
||||
|
||||
weighted_tail_quantile_impl(dont_care) {}
|
||||
|
||||
template<typename Args>
|
||||
result_type result(Args const &args) const
|
||||
{
|
||||
float_type threshold = sum_of_weights(args)
|
||||
* ( ( is_same<LeftRight, left>::value ) ? args[quantile_probability] : 1. - args[quantile_probability] );
|
||||
|
||||
std::size_t n = 0;
|
||||
Weight sum = Weight(0);
|
||||
|
||||
while (sum < threshold)
|
||||
{
|
||||
if (n < static_cast<std::size_t>(tail_weights(args).size()))
|
||||
{
|
||||
sum += *(tail_weights(args).begin() + n);
|
||||
n++;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (std::numeric_limits<result_type>::has_quiet_NaN)
|
||||
{
|
||||
return std::numeric_limits<result_type>::quiet_NaN();
|
||||
}
|
||||
else
|
||||
{
|
||||
std::ostringstream msg;
|
||||
msg << "index n = " << n << " is not in valid range [0, " << tail(args).size() << ")";
|
||||
boost::throw_exception(std::runtime_error(msg.str()));
|
||||
return Sample(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Note that the cached samples of the left are sorted in ascending order,
|
||||
// whereas the samples of the right tail are sorted in descending order
|
||||
return *(boost::begin(tail(args)) + n - 1);
|
||||
}
|
||||
};
|
||||
} // namespace impl
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
// tag::weighted_tail_quantile<>
|
||||
//
|
||||
namespace tag
|
||||
{
|
||||
template<typename LeftRight>
|
||||
struct weighted_tail_quantile
|
||||
: depends_on<sum_of_weights, tail_weights<LeftRight> >
|
||||
{
|
||||
/// INTERNAL ONLY
|
||||
typedef accumulators::impl::weighted_tail_quantile_impl<mpl::_1, mpl::_2, LeftRight> impl;
|
||||
};
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
// extract::weighted_tail_quantile
|
||||
//
|
||||
namespace extract
|
||||
{
|
||||
extractor<tag::quantile> const weighted_tail_quantile = {};
|
||||
}
|
||||
|
||||
using extract::weighted_tail_quantile;
|
||||
|
||||
}} // namespace boost::accumulators
|
||||
|
||||
#ifdef _MSC_VER
|
||||
# pragma warning(pop)
|
||||
#endif
|
||||
|
||||
#endif
|