1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Chapter 1. Boost.Accumulators</title> 6<link rel="stylesheet" href="../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="libraries.html" title="Part I. The Boost C++ Libraries (BoostBook Subset)"> 10<link rel="prev" href="libraries.html" title="Part I. The Boost C++ Libraries (BoostBook Subset)"> 11<link rel="next" href="accumulators/user_s_guide.html" title="User's Guide"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../boost.png"></td> 16<td align="center"><a href="../../index.html">Home</a></td> 17<td align="center"><a href="../../libs/libraries.htm">Libraries</a></td> 18<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 19<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 20<td align="center"><a href="../../more/index.htm">More</a></td> 21</tr></table> 22<hr> 23<div class="spirit-nav"> 24<a accesskey="p" href="libraries.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="libraries.html"><img src="../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="index.html"><img src="../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="accumulators/user_s_guide.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="chapter"> 27<div class="titlepage"><div> 28<div><h2 class="title"> 29<a name="accumulators"></a>Chapter 1. Boost.Accumulators</h2></div> 30<div><div class="author"><h3 class="author"> 31<span class="firstname">Eric</span> <span class="surname">Niebler</span> 32</h3></div></div> 33<div><p class="copyright">Copyright © 2005, 2006 Eric Niebler</p></div> 34<div><div class="legalnotice"> 35<a name="accumulators.legal"></a><p> 36 Distributed under the Boost Software License, Version 1.0. (See accompanying 37 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>) 38 </p> 39</div></div> 40</div></div> 41<div class="toc"> 42<p><b>Table of Contents</b></p> 43<dl class="toc"> 44<dt><span class="section"><a href="accumulators.html#accumulators.preface">Preface</a></span></dt> 45<dt><span class="section"><a href="accumulators/user_s_guide.html">User's Guide</a></span></dt> 46<dd><dl> 47<dt><span class="section"><a href="accumulators/user_s_guide.html#accumulators.user_s_guide.the_accumulators_framework">The 48 Accumulators Framework</a></span></dt> 49<dt><span class="section"><a href="accumulators/user_s_guide.html#accumulators.user_s_guide.the_statistical_accumulators_library">The 50 Statistical Accumulators Library</a></span></dt> 51</dl></dd> 52<dt><span class="section"><a href="accumulators/acknowledgements.html">Acknowledgements</a></span></dt> 53<dt><span class="section"><a href="accumulators/reference.html">Reference</a></span></dt> 54<dd><dl> 55<dt><span class="section"><a href="accumulators/reference.html#accumulators_framework_reference">Accumulators Framework Reference</a></span></dt> 56<dt><span class="section"><a href="accumulators/reference.html#statistics_library_reference">Statistics Library Reference</a></span></dt> 57<dt><span class="section"><a href="accumulators/reference.html#numeric_operators_library_reference">Numeric Operators Library Reference</a></span></dt> 58</dl></dd> 59</dl> 60</div> 61<div class="section"> 62<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 63<a name="accumulators.preface"></a><a class="link" href="accumulators.html#accumulators.preface" title="Preface">Preface</a> 64</h2></div></div></div> 65<div class="blockquote"><blockquote class="blockquote"><p> 66 <span class="quote">“<span class="quote">It is better to be approximately right than exactly wrong.</span>”</span><br> 67 <span class="emphasis"><em>-- Old adage</em></span> 68 </p></blockquote></div> 69<h3> 70<a name="accumulators.preface.h0"></a> 71 <span class="phrase"><a name="accumulators.preface.description"></a></span><a class="link" href="accumulators.html#accumulators.preface.description">Description</a> 72 </h3> 73<p> 74 Boost.Accumulators is both a library for incremental statistical computation 75 as well as an extensible framework for incremental calculation in general. 76 The library deals primarily with the concept of an <span class="emphasis"><em>accumulator</em></span>, 77 which is a primitive computational entity that accepts data one sample at a 78 time and maintains some internal state. These accumulators may offload some 79 of their computations on other accumulators, on which they depend. Accumulators 80 are grouped within an <span class="emphasis"><em>accumulator set</em></span>. Boost.Accumulators 81 resolves the inter-dependencies between accumulators in a set and ensures that 82 accumulators are processed in the proper order. 83 </p> 84</div> 85</div> 86<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 87<td align="left"><p><small>Last revised: August 11, 2020 at 15:04:03 GMT</small></p></td> 88<td align="right"><div class="copyright-footer"></div></td> 89</tr></table> 90<hr> 91<div class="spirit-nav"> 92<a accesskey="p" href="libraries.html"><img src="../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="libraries.html"><img src="../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="index.html"><img src="../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="accumulators/user_s_guide.html"><img src="../../doc/src/images/next.png" alt="Next"></a> 93</div> 94</body> 95</html> 96
