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<title>Struct template tail_variate_means_impl</title>
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<div class="refentry" title="Struct template tail_variate_means_impl">
<a name="boost.accumulators.impl.tail_variate_means_impl"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Struct template tail_variate_means_impl</span></h2>
<p>boost::accumulators::impl::tail_variate_means_impl — Estimation of the absolute and relative tail variate means (for both left and right tails). </p>
</div>
<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.tail_variate_means_hpp" title="Header <boost/accumulators/statistics/tail_variate_means.hpp>">boost/accumulators/statistics/tail_variate_means.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> Impl, <span class="bold"><strong>typename</strong></span> LeftRight,
<span class="bold"><strong>typename</strong></span> VariateTag>
<span class="bold"><strong>struct</strong></span> <a class="link" href="tail_variate_means_impl.html" title="Struct template tail_variate_means_impl">tail_variate_means_impl</a> {
<span class="emphasis"><em>// types</em></span>
<span class="bold"><strong>typedef</strong></span> numeric::functional::average< Sample, std::size_t >::result_type <a name="boost.accumulators.impl.tail_variate_means_impl.float_type"></a>float_type;
<span class="bold"><strong>typedef</strong></span> std::vector< float_type > <a name="boost.accumulators.impl.tail_variate_means_impl.array_type"></a>array_type;
<span class="bold"><strong>typedef</strong></span> iterator_range< <span class="bold"><strong>typename</strong></span> array_type::iterator > <a name="boost.accumulators.impl.tail_variate_means_impl.result_type"></a>result_type;
<span class="emphasis"><em>// <a class="link" href="tail_variate_means_impl.html#boost.accumulators.impl.tail_variate_means_implconstruct-copy-destruct">construct/copy/destruct</a></em></span>
<a class="link" href="tail_variate_means_impl.html#id560814-bb">tail_variate_means_impl</a>(dont_care);
<span class="emphasis"><em>// <a class="link" href="tail_variate_means_impl.html#id560790-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="tail_variate_means_impl.html#id560793-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="id682514"></a><h2>Description</h2>
<p>For all <span class="inlinemediaobject"><img src="../../../images/accumulators/form_65.png"></span>-th variates associated to the <span class="inlinemediaobject"><img src="../../../images/accumulators/form_59.png"></span> largest samples (or the <span class="inlinemediaobject"><img src="../../../images/accumulators/form_59.png"></span> smallest samples in case of the left tail), the absolute tail means <span class="inlinemediaobject"><img src="../../../images/accumulators/form_66.png"></span> are computed and returned as an iterator range. Alternatively, the relative tail means <span class="inlinemediaobject"><img src="../../../images/accumulators/form_67.png"></span> are returned, which are the absolute tail means normalized with the (non-coherent) sample tail mean <span class="inlinemediaobject"><img src="../../../images/accumulators/form_55.png"></span>.</p>
<div class="equation">
<a name="id682648"></a><p class="title"><b>Equation 1.17. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_68.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<div class="equation">
<a name="id682674"></a><p class="title"><b>Equation 1.18. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_69.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<div class="equation">
<a name="id682701"></a><p class="title"><b>Equation 1.19. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_70.png" align="middle"></div></div>
</div>
<p><br class="equation-break"></p>
<div class="equation">
<a name="id682730"></a><p class="title"><b>Equation 1.20. </b></p>
<div class="equation-contents"><div class="mediaobject" align="center"><img src="../../../images/accumulators/form_71.png" align="middle"></div></div>
</div>
<p><br class="equation-break"> </p>
<div class="refsect2" title="tail_variate_means_impl public construct/copy/destruct">
<a name="id682758"></a><h3>
<a name="boost.accumulators.impl.tail_variate_means_implconstruct-copy-destruct"></a><code class="computeroutput">tail_variate_means_impl</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><a name="id560814-bb"></a>tail_variate_means_impl(dont_care);</pre></li></ol></div>
</div>
<div class="refsect2" title="tail_variate_means_impl public member functions">
<a name="id682793"></a><h3>
<a name="id560790-bb"></a><code class="computeroutput">tail_variate_means_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="id560793-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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