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<div><h2 class="title">
<a name="accumulators"></a>Chapter&#160;1.&#160;Boost.Accumulators</h2></div>
<div><div class="author"><h3 class="author">
<span class="firstname">Eric</span> <span class="surname">Niebler</span>
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<div><p class="copyright">Copyright &#169; 2005, 2006 Eric Niebler</p></div>
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<a name="id759778"></a><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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<p><b>Table of Contents</b></p>
<dl>
<dt><span class="section"><a href="accumulators.html#accumulators.preface">Preface</a></span></dt>
<dt><span class="section"><a href="accumulators/user_s_guide.html">User's Guide</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="accumulators/user_s_guide.html#accumulators.user_s_guide.the_accumulators_framework">The
      Accumulators Framework</a></span></dt>
<dt><span class="section"><a href="accumulators/user_s_guide.html#accumulators.user_s_guide.the_statistical_accumulators_library">The
      Statistical Accumulators Library</a></span></dt>
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<dt><span class="section"><a href="accumulators/acknowledgements.html">Acknowledgements</a></span></dt>
<dt><span class="section"><a href="accumulators/reference.html">Reference</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="accumulators/reference.html#accumulators_framework_reference">Accumulators Framework Reference</a></span></dt>
<dt><span class="section"><a href="accumulators/reference.html#statistics_library_reference">Statistics Library Reference</a></span></dt>
<dt><span class="section"><a href="accumulators/reference.html#numeric_operators_library_reference">Numeric Operators Library Reference</a></span></dt>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="accumulators.preface"></a><a class="link" href="accumulators.html#accumulators.preface" title="Preface">Preface</a>
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<div class="blockquote"><blockquote class="blockquote"><p>
        <span class="quote">&#8220;<span class="quote">It is better to be approximately right than exactly wrong.</span>&#8221;</span><br>
        <span class="emphasis"><em>-- Old adage</em></span>
      </p></blockquote></div>
<a name="accumulators.preface.description"></a><h3>
<a name="id759828"></a>
      <a class="link" href="accumulators.html#accumulators.preface.description">Description</a>
    </h3>
<p>
      Boost.Accumulators is both a library for incremental statistical computation
      as well as an extensible framework for incremental calculation in general.
      The library deals primarily with the concept of an <span class="emphasis"><em>accumulator</em></span>,
      which is a primitive computational entity that accepts data one sample at a
      time and maintains some internal state. These accumulators may offload some
      of their computations on other accumulators, on which they depend. Accumulators
      are grouped within an <span class="emphasis"><em>accumulator set</em></span>. Boost.Accumulators
      resolves the inter-dependencies between accumulators in a set and ensures that
      accumulators are processed in the proper order.
    </p>
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<td align="left"><p><small>Last revised: November 10, 2010 at 00:43:38 GMT</small></p></td>
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