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<div class="refentry" title="Struct template non_coherent_weighted_tail_mean_impl">
<a name="boost.accumulators.impl.non_coherent_weighted_t_id565029"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Struct template non_coherent_weighted_tail_mean_impl</span></h2>
<p>boost::accumulators::impl::non_coherent_weighted_tail_mean_impl — Estimation of the (non-coherent) weighted tail mean based on order statistics (for both left and right tails). </p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="emphasis"><em>// In header: <<a class="link" href="../../../accumulators/reference.html#header.boost.accumulators.statistics.weighted_tail_mean_hpp" title="Header <boost/accumulators/statistics/weighted_tail_mean.hpp>">boost/accumulators/statistics/weighted_tail_mean.hpp</a>>
</em></span><span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename</strong></span> Sample, <span class="bold"><strong>typename</strong></span> Weight, <span class="bold"><strong>typename</strong></span> LeftRight>
<span class="bold"><strong>struct</strong></span> <a class="link" href="non_coherent_weighted_t_id565029.html" title="Struct template non_coherent_weighted_tail_mean_impl">non_coherent_weighted_tail_mean_impl</a> {
<span class="emphasis"><em>// types</em></span>
<span class="bold"><strong>typedef</strong></span> numeric::functional::multiplies< Sample, Weight >::result_type <a name="boost.accumulators.impl.non_coherent_weighted_t_id565029.weighted_sample"></a>weighted_sample;
<span class="bold"><strong>typedef</strong></span> numeric::functional::average< Weight, std::size_t >::result_type <a name="boost.accumulators.impl.non_coherent_weighted_t_id565029.float_type"></a>float_type;
<span class="bold"><strong>typedef</strong></span> numeric::functional::average< weighted_sample, std::size_t >::result_type <a name="boost.accumulators.impl.non_coherent_weighted_t_id565029.result_type"></a>result_type;
<span class="emphasis"><em>// <a class="link" href="non_coherent_weighted_t_id565029.html#boost.accumulators.impl.non_coherent_weighted_t_id565029construct-copy-destruct">construct/copy/destruct</a></em></span>
<a class="link" href="non_coherent_weighted_t_id565029.html#id565339-bb">non_coherent_weighted_tail_mean_impl</a>(dont_care);
<span class="emphasis"><em>// <a class="link" href="non_coherent_weighted_t_id565029.html#id565316-bb">public member functions</a></em></span>
<span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename</strong></span> Args> <span class="type">result_type</span> <a class="link" href="non_coherent_weighted_t_id565029.html#id565319-bb">result</a>(Args <span class="bold"><strong>const</strong></span> &) <span class="bold"><strong>const</strong></span>;
};</pre></div>
<div class="refsect1" title="Description">
<a name="id698518"></a><h2>Description</h2>
<p>An estimation of the non-coherent, weighted tail mean <span class="inlinemediaobject"><img src="../../../images/accumulators/form_55.png"></span> is given by the weighted mean of the</p>
<div class="equation">
<a name="id698546"></a><p class="title"><b>Equation 1.30. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_84.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<p>smallest samples (left tail) or the weighted mean of the</p>
<div class="equation">
<a name="id698576"></a><p class="title"><b>Equation 1.31. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_85.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<p>largest samples (right tail) above a quantile <span class="inlinemediaobject"><img src="../../../images/accumulators/form_86.png"></span> of level <span class="inlinemediaobject"><img src="../../../images/accumulators/form_45.png"></span>, <span class="inlinemediaobject"><img src="../../../images/accumulators/form_60.png"></span> being the total number of sample and <span class="inlinemediaobject"><img src="../../../images/accumulators/form_82.png"></span> the sum of all <span class="inlinemediaobject"><img src="../../../images/accumulators/form_60.png"></span> weights:</p>
<div class="equation">
<a name="id698704"></a><p class="title"><b>Equation 1.32. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_87.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<div class="equation">
<a name="id698730"></a><p class="title"><b>Equation 1.33. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_88.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<p>
</p>
<div class="refsect2" title="non_coherent_weighted_tail_mean_impl public construct/copy/destruct">
<a name="id698757"></a><h3>
<a name="boost.accumulators.impl.non_coherent_weighted_t_id565029construct-copy-destruct"></a><code class="computeroutput">non_coherent_weighted_tail_mean_impl</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><a name="id565339-bb"></a>non_coherent_weighted_tail_mean_impl(dont_care);</pre></li></ol></div>
</div>
<div class="refsect2" title="non_coherent_weighted_tail_mean_impl public member functions">
<a name="id699064"></a><h3>
<a name="id565316-bb"></a><code class="computeroutput">non_coherent_weighted_tail_mean_impl</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename</strong></span> Args> <span class="type">result_type</span> <a name="id565319-bb"></a>result(Args <span class="bold"><strong>const</strong></span> & args) <span class="bold"><strong>const</strong></span>;</pre></li></ol></div>
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<td align="right"><div class="copyright-footer">Copyright © 2005, 2006 Eric Niebler<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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