ceph/src/boost/libs/math/doc/distexplorer/html/index.html

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  23 <div><h2 class="title">
  24 <a name="statistical_distribution_explorer"></a>Statistical Distribution Explorer</h2></div>
  25 <div><div class="authorgroup">
  26 <div class="author"><h3 class="author">
  27 <span class="firstname">Paul A.</span> <span class="surname">Bristow</span>
  28 </h3></div>
  29 <div class="author"><h3 class="author">
  30 <span class="firstname">John</span> <span class="surname">Maddock</span>
  31 </h3></div>
  32 </div></div>
  33 <div><p class="copyright">Copyright &#169; 2008 Paul A. Bristow, John Maddock</p></div>
  34 <div><div class="legalnotice">
  35 <a name="id759711"></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>
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  41 <hr>
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  43 <p>
  44     A Windows utility to show the properties of statistical distributions using parameters
  45     provided interactively by the user.
  46   </p>
  47 <p>
  48     The distributions provided are:
  49   </p>
  50 <div class="itemizedlist"><ul class="itemizedlist" type="disc">
  51 <li class="listitem">
  52         bernoulli
  53       </li>
  54 <li class="listitem">
  55         beta_distribution
  56       </li>
  57 <li class="listitem">
  58         binomial_distribution
  59       </li>
  60 <li class="listitem">
  61         cauchy
  62       </li>
  63 <li class="listitem">
  64         chi_squared
  65       </li>
  66 <li class="listitem">
  67         exponential
  68       </li>
  69 <li class="listitem">
  70         extreme_value
  71       </li>
  72 <li class="listitem">
  73         fisher_f
  74       </li>
  75 <li class="listitem">
  76         gamma_distribution
  77       </li>
  78 <li class="listitem">
  79         lognormal_distribution
  80       </li>
  81 <li class="listitem">
  82         negative_binomial_distribution
  83       </li>
  84 <li class="listitem">
  85         normal_distribution
  86       </li>
  87 <li class="listitem">
  88         pareto
  89       </li>
  90 <li class="listitem">
  91         poisson
  92       </li>
  93 <li class="listitem">
  94         rayleigh
  95       </li>
  96 <li class="listitem">
  97         students_t
  98       </li>
  99 <li class="listitem">
 100         triangular
 101       </li>
 102 <li class="listitem">
 103         uniform
 104       </li>
 105 <li class="listitem">
 106         weibull
 107       </li>
 108 </ul></div>
 109 <p>
 110     Properties of distributions computed are:
 111   </p>
 112 <div class="itemizedlist"><ul class="itemizedlist" type="disc">
 113 <li class="listitem">
 114         mean
 115       </li>
 116 <li class="listitem">
 117         mode
 118       </li>
 119 <li class="listitem">
 120         median
 121       </li>
 122 <li class="listitem">
 123         variance
 124       </li>
 125 <li class="listitem">
 126         standard deviation
 127       </li>
 128 <li class="listitem">
 129         coefficient of variation,
 130       </li>
 131 <li class="listitem">
 132         skewness
 133       </li>
 134 <li class="listitem">
 135         kurtosis
 136       </li>
 137 <li class="listitem">
 138         excess
 139       </li>
 140 <li class="listitem">
 141         range supported
 142       </li>
 143 </ul></div>
 144 <p>
 145     Calculated, from values provided, are:
 146   </p>
 147 <div class="itemizedlist"><ul class="itemizedlist" type="disc">
 148 <li class="listitem">
 149         probability density (or mass) function (PDF)
 150       </li>
 151 <li class="listitem">
 152         cumulative distribution function (CDF), and complement
 153       </li>
 154 <li class="listitem">
 155         Quantiles (percentiles) are calculated for typical risk (alpha) probabilities
 156         (0.001, 0.01, 0.5, 0.1, 0.333) and for additional probabilities provided
 157         by the user.
 158       </li>
 159 </ul></div>
 160 <p>
 161     Results can be saved to text files using Save or SaveAs. All the values on the
 162     four tabs are output to the file chosen, and are tab separated to assist input
 163     to other programs, for example, spreadsheets or text editors.
 164   </p>
 165 <p>
 166     Note: Excel (for example), only shows 10 decimal digits, by default: to display
 167     the maximum possible precision (abotu 15 decimal digits), it is necessary to
 168     format all cells to display this precision. Although unusually accurate, not
 169     all values computed by Distexplorer will be as accurate as this. Values shown
 170     as NaN cannot be calculated from the value(s) given, most commonly because the
 171     value input is outside the range for the distribution.
 172   </p>
 173 <p>
 174     For more information, including downloads, see
 175   </p>
 176 <p>
 177     <a href="http://distexplorer.sourceforge.net/" target="_top">Distexplorer at Sourceforge</a>
 178   </p>
 179 <p>
 180     This Microsoft Windows 32 package distribution.exe was generated from a C# program
 181     and uses a boost_math.dll generated using the Boost.Math C++ source code from
 182     the Boost.Math Toolkit, compiled in CLI mode, containing the underlying statistical
 183     distribution classes and functions.
 184   </p>
 185 <p>
 186     All source code is freely available for view and use under the <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">Boost
 187     Open Source License</a>.
 188   </p>
 189 <p>
 190     <a href="https://svn.boost.org/svn/boost/sandbox%5Cmath_toolkit%5Clibs%5Cmath%5Cdot_net_example" target="_top">Math
 191     Toolkit C++ source code</a> to produce boost_math.dll is in the most recent
 192     <a href="http://www.boost.org" target="_top">Boost</a> release, initially 1.35.0.
 193   </p>
 194 <p>
 195     It is distributed as a single Windows Installer package Setupdistex.msi. Unzip
 196     the distexplorer.zip to a temporary location of your choice and run setup.exe.
 197   </p>
 198 <p>
 199     (Note that .NET framework 2.0 and VCredist are requirements for this program.
 200     Most recent and updated Windows environments will already have these, but they
 201     are quickly, easily and safely installed from the Microsoft site if required.)
 202   </p>
 203 <p>
 204     (The package cannot be run on other platforms at present but it should be possible
 205     to build an equivalent utility on any C/C++ platform if anyone would like to
 206     undertake this task.)
 207   </p>
 208 </div>
 209 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 210 <td align="left"><p><small>Last revised: July 01, 2010 at 21:45:23 GMT</small></p></td>
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