nojhan/paradiseo
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Paradiseo-eo sources added

Browse source 
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@40 331e1502-861f-0410-8da2-ba01fb791d7f
This commit is contained in:
legrand 2006-12-12 14:49:08 +00:00
commit c3aec878e5
3609 changed files with 342772 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

97
trunk/paradiseo-eo/doc/html/eo_ranking_8h-source.html Normal file
View file

@ -0,0 +1,97 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>EO: eoRanking.h Source File</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.3.9.1 -->
<div class="qindex"> <form class="search" action="search.php" method="get">
<a class="qindex" href="main.html">Main&nbsp;Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class&nbsp;Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical&nbsp;List</a> | <a class="qindex" href="annotated.html">Class&nbsp;List</a> | <a class="qindex" href="files.html">File&nbsp;List</a> | <a class="qindex" href="namespacemembers.html">Namespace&nbsp;Members</a> | <a class="qindex" href="functions.html">Class&nbsp;Members</a> | <a class="qindex" href="pages.html">Related&nbsp;Pages</a> | <span class="search"><u>S</u>earch&nbsp;for&nbsp;<input class="search" type="text" name="query" value="" size="20" accesskey="s"/></span></form></div>
<div class="nav">
<a class="el" href="dir_000000.html">src</a></div>
<h1>eoRanking.h</h1><div class="fragment"><pre class="fragment">00001
00025 <span class="comment">//-----------------------------------------------------------------------------</span>
00026
00027 <span class="preprocessor">#ifndef eoRanking_h</span>
00028 <span class="preprocessor"></span><span class="preprocessor">#define eoRanking_h</span>
00029 <span class="preprocessor"></span>
00030 <span class="preprocessor">#include &lt;eoPerf2Worth.h&gt;</span>
00031
00037 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00038"></a><a class="code" href="classeo_ranking.html">00038</a> <span class="keyword">class </span><a class="code" href="classeo_ranking.html">eoRanking</a> : <span class="keyword">public</span> <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth</a>&lt;EOT&gt; <span class="comment">// false: do not cache fitness</span>
00039 {
00040 <span class="keyword">public</span>:
00041
00042 <span class="keyword">using</span> <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT&gt;</a>::value;
00043
00044 <span class="comment">/* Ctor:</span>
00045 <span class="comment"> @param _p selective pressure (in (1,2]</span>
00046 <span class="comment"> @param _e exponent (1 == linear)</span>
00047 <span class="comment"> */</span>
00048 <a class="code" href="classeo_ranking.html">eoRanking</a>(<span class="keywordtype">double</span> _p=2.0, <span class="keywordtype">double</span> _e=1.0):
00049 pressure(_p), exponent(_e) {}
00050
00051 <span class="comment">/* helper function: finds index in _pop of _eo, an EOT * */</span>
00052 <span class="keywordtype">int</span> lookfor(<span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> *_eo, <span class="keyword">const</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _pop)
00053 {
00054 <span class="keyword">typename</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>::const_iterator it;
00055 <span class="keywordflow">for</span> (it=_pop.begin(); it&lt;_pop.end(); it++)
00056 {
00057 <span class="keywordflow">if</span> (_eo == &amp;(*it))
00058 <span class="keywordflow">return</span> it-_pop.begin();
00059 }
00060 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Not found in eoLinearRanking"</span>);
00061 }
00062
00063 <span class="comment">/* COmputes the ranked fitness: fitnesses range in [m,M]</span>
00064 <span class="comment"> with m=2-pressure/popSize and M=pressure/popSize.</span>
00065 <span class="comment"> in between, the progression depstd::ends on exponent (linear if 1).</span>
00066 <span class="comment"> */</span>
<a name="l00067"></a><a class="code" href="classeo_ranking.html#a2">00067</a> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classeo_ranking.html#a2">operator()</a>(<span class="keyword">const</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _pop)
00068 {
00069 std::vector&lt;const EOT *&gt; rank;
00070 _pop.<a class="code" href="classeo_pop.html#a5">sort</a>(rank);
00071 <span class="keywordtype">unsigned</span> pSize =_pop.size();
00072 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pSizeMinusOne = pSize-1;
00073
00074 <span class="keywordflow">if</span> (pSize &lt;= 1)
00075 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Cannot do ranking with population of size &lt;= 1"</span>);
00076
00077 <span class="comment">// value() refers to the std::vector of worthes (we're in an eoParamvalue)</span>
00078 <a class="code" href="classeo_value_param.html#a2">value</a>().resize(pSize);
00079
00080 <span class="keywordtype">double</span> beta = (2-pressure)/pSize;
00081 <span class="keywordflow">if</span> (exponent == 1.0) <span class="comment">// no need for exponetial then</span>
00082 {
00083 <span class="keywordtype">double</span> alpha = (2*pressure-2)/(pSize*pSizeMinusOne);
00084 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;pSize; i++)
00085 {
00086 <span class="keywordtype">int</span> which = lookfor(rank[i], _pop);
00087 <a class="code" href="classeo_value_param.html#a2">value</a>()[which] = alpha*(pSize-i)+beta; <span class="comment">// worst -&gt; 1/[P(P-1)/2]</span>
00088 }
00089 }
00090 <span class="keywordflow">else</span> <span class="comment">// exponent != 1</span>
00091 {
00092 <span class="keywordtype">double</span> gamma = (2*pressure-2)/pSize;
00093 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;pSize; i++)
00094 {
00095 <span class="keywordtype">int</span> which = lookfor(rank[i], _pop);
00096 <span class="comment">// value in in [0,1]</span>
00097 <span class="keywordtype">double</span> tmp = ((double)(pSize-i))/pSize;
00098 <span class="comment">// to the exponent, and back to [m,M]</span>
00099 <a class="code" href="classeo_value_param.html#a2">value</a>()[which] = gamma*pow(tmp, exponent)+beta;
00100 }
00101 }
00102 }
00103 <span class="keyword">private</span>:
00104 <span class="keywordtype">double</span> pressure; <span class="comment">// selective pressure</span>
00105 <span class="keywordtype">double</span> exponent;
00106 };
00107
00108
00109
00110 <span class="preprocessor">#endif</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Oct 19 05:06:37 2006 for EO by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
</body>
</html>