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<h1>moeoEntropyMetric.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-</span>
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<a name="l00002"></a>00002
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<a name="l00003"></a>00003 <span class="comment">//-----------------------------------------------------------------------------</span>
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<a name="l00004"></a>00004 <span class="comment">// moeoEntropyMetric.h</span>
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<a name="l00005"></a>00005 <span class="comment">// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2006</span>
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<a name="l00006"></a>00006 <span class="comment">/*</span>
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<a name="l00007"></a>00007 <span class="comment"> This library...</span>
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<a name="l00008"></a>00008 <span class="comment"></span>
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<a name="l00009"></a>00009 <span class="comment"> Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr</span>
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<a name="l00010"></a>00010 <span class="comment"> */</span>
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<a name="l00011"></a>00011 <span class="comment">//-----------------------------------------------------------------------------</span>
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<a name="l00012"></a>00012
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<a name="l00013"></a>00013 <span class="preprocessor">#ifndef MOEOENTROPYMETRIC_H_</span>
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<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#define MOEOENTROPYMETRIC_H_</span>
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<a name="l00015"></a>00015 <span class="preprocessor"></span>
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<a name="l00016"></a>00016 <span class="preprocessor">#include <metric/moeoMetric.h></span>
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<a name="l00017"></a>00017
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<a name="l00023"></a><a class="code" href="classmoeoEntropyMetric.html">00023</a> <span class="keyword">template</span> < <span class="keyword">class</span> EOT > <span class="keyword">class </span><a class="code" href="classmoeoEntropyMetric.html">moeoEntropyMetric</a>:<span class="keyword">public</span> <a class="code" href="classmoeoVectorVsVectorBM.html">moeoVectorVsVectorBM</a> < EOT,
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<a name="l00024"></a>00024 double >
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<a name="l00025"></a>00025 {
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<a name="l00026"></a>00026 <span class="keyword">public</span>:
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<a name="l00027"></a>00027
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<a name="l00031"></a><a class="code" href="classmoeoEntropyMetric.html#306b72d2236de1ecbae986c65490a8fe">00031</a> <span class="keyword">typedef</span> <span class="keyword">typename</span> EOT::Fitness <a class="code" href="classmoeoEntropyMetric.html#306b72d2236de1ecbae986c65490a8fe">EOFitness</a>;
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<a name="l00032"></a>00032
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<a name="l00038"></a><a class="code" href="classmoeoEntropyMetric.html#58136405dfed951efa340ddf541c29fd">00038</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoEntropyMetric.html#58136405dfed951efa340ddf541c29fd">operator () </a>(<span class="keyword">const</span> std::vector < EOFitness > &_set1,
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<a name="l00039"></a>00039 <span class="keyword">const</span> std::vector < EOFitness > &_set2)
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<a name="l00040"></a>00040 {
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<a name="l00041"></a>00041 <span class="comment">// normalization</span>
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<a name="l00042"></a>00042 std::vector < EOFitness > set1 = _set1;
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<a name="l00043"></a>00043 std::vector < EOFitness > set2 = _set2;
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<a name="l00044"></a>00044 <a class="code" href="classmoeoEntropyMetric.html#3252e7534b1ceb1317936c5d2b3abcbe">removeDominated</a> (set1);
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<a name="l00045"></a>00045 <a class="code" href="classmoeoEntropyMetric.html#3252e7534b1ceb1317936c5d2b3abcbe">removeDominated</a> (set2);
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<a name="l00046"></a>00046 <a class="code" href="classmoeoEntropyMetric.html#c9f0c65b4de69accbfb42486f6445cb0">prenormalize</a> (set1);
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<a name="l00047"></a>00047 <a class="code" href="classmoeoEntropyMetric.html#bc32468b148a0da4eb21a9fc14dfafae">normalize</a> (set1);
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<a name="l00048"></a>00048 <a class="code" href="classmoeoEntropyMetric.html#bc32468b148a0da4eb21a9fc14dfafae">normalize</a> (set2);
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<a name="l00049"></a>00049
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<a name="l00050"></a>00050 <span class="comment">// making of PO*</span>
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<a name="l00051"></a>00051 std::vector < EOFitness > star; <span class="comment">// rotf :-)</span>
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<a name="l00052"></a>00052 <a class="code" href="classmoeoEntropyMetric.html#2de60a0e6be362f074b50e6b455152ab">computeUnion</a> (set1, set2, star);
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<a name="l00053"></a>00053 <a class="code" href="classmoeoEntropyMetric.html#3252e7534b1ceb1317936c5d2b3abcbe">removeDominated</a> (star);
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<a name="l00054"></a>00054
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<a name="l00055"></a>00055 <span class="comment">// making of PO1 U PO*</span>
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<a name="l00056"></a>00056 std::vector < EOFitness > union_set1_star; <span class="comment">// rotf again ...</span>
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<a name="l00057"></a>00057 <a class="code" href="classmoeoEntropyMetric.html#2de60a0e6be362f074b50e6b455152ab">computeUnion</a> (set1, star, union_set1_star);
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<a name="l00058"></a>00058
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<a name="l00059"></a>00059 <span class="keywordtype">unsigned</span> C = union_set1_star.size ();
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<a name="l00060"></a>00060 <span class="keywordtype">float</span> omega = 0;
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<a name="l00061"></a>00061 <span class="keywordtype">float</span> entropy = 0;
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<a name="l00062"></a>00062
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<a name="l00063"></a>00063 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < C; i++)
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<a name="l00064"></a>00064 {
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<a name="l00065"></a>00065 <span class="keywordtype">unsigned</span> N_i =
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<a name="l00066"></a>00066 <a class="code" href="classmoeoEntropyMetric.html#a9369be315e139ebdf19fac09ad0563f">howManyInNicheOf</a> (union_set1_star, union_set1_star[i],
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<a name="l00067"></a>00067 star.size ());
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<a name="l00068"></a>00068 <span class="keywordtype">unsigned</span> n_i =
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<a name="l00069"></a>00069 <a class="code" href="classmoeoEntropyMetric.html#a9369be315e139ebdf19fac09ad0563f">howManyInNicheOf</a> (set1, union_set1_star[i], star.size ());
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<a name="l00070"></a>00070 <span class="keywordflow">if</span> (n_i > 0)
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<a name="l00071"></a>00071 {
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<a name="l00072"></a>00072 omega += 1.0 / N_i;
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<a name="l00073"></a>00073 entropy +=
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<a name="l00074"></a>00074 (float) n_i / (N_i * C) * log (((<span class="keywordtype">float</span>) n_i / C) / log (2.0));
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<a name="l00075"></a>00075 }
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<a name="l00076"></a>00076 }
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<a name="l00077"></a>00077 entropy /= -log (omega);
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<a name="l00078"></a>00078 entropy *= log (2.0);
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<a name="l00079"></a>00079 <span class="keywordflow">return</span> entropy;
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<a name="l00080"></a>00080 }
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<a name="l00081"></a>00081
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<a name="l00082"></a>00082
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<a name="l00083"></a>00083 <span class="keyword">private</span>:
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<a name="l00084"></a>00084
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<a name="l00085"></a><a class="code" href="classmoeoEntropyMetric.html#d4046a304badfe78aa35b2d57938ffe9">00085</a> std::vector < double ><a class="code" href="classmoeoEntropyMetric.html#d4046a304badfe78aa35b2d57938ffe9">vect_min_val</a>;
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<a name="l00086"></a><a class="code" href="classmoeoEntropyMetric.html#af0ae9645bdbb993de4bc990a0a08883">00086</a> std::vector < double ><a class="code" href="classmoeoEntropyMetric.html#af0ae9645bdbb993de4bc990a0a08883">vect_max_val</a>;
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<a name="l00087"></a>00087
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<a name="l00088"></a><a class="code" href="classmoeoEntropyMetric.html#3252e7534b1ceb1317936c5d2b3abcbe">00088</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#3252e7534b1ceb1317936c5d2b3abcbe">removeDominated</a> (std::vector < EOFitness > &_f)
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<a name="l00089"></a>00089 {
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<a name="l00090"></a>00090 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < _f.size (); i++)
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<a name="l00091"></a>00091 {
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<a name="l00092"></a>00092 <span class="keywordtype">bool</span> dom = <span class="keyword">false</span>;
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<a name="l00093"></a>00093 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j = 0; j < _f.size (); j++)
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<a name="l00094"></a>00094 <span class="keywordflow">if</span> (i != j && _f[j].dominates (_f[i]))
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<a name="l00095"></a>00095 {
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<a name="l00096"></a>00096 dom = <span class="keyword">true</span>;
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<a name="l00097"></a>00097 <span class="keywordflow">break</span>;
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<a name="l00098"></a>00098 }
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<a name="l00099"></a>00099 <span class="keywordflow">if</span> (dom)
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<a name="l00100"></a>00100 {
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<a name="l00101"></a>00101 _f[i] = _f.back ();
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<a name="l00102"></a>00102 _f.pop_back ();
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<a name="l00103"></a>00103 i--;
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<a name="l00104"></a>00104 }
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<a name="l00105"></a>00105 }
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<a name="l00106"></a>00106 }
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<a name="l00107"></a>00107
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<a name="l00108"></a><a class="code" href="classmoeoEntropyMetric.html#c9f0c65b4de69accbfb42486f6445cb0">00108</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#c9f0c65b4de69accbfb42486f6445cb0">prenormalize</a> (<span class="keyword">const</span> std::vector < EOFitness > &_f)
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<a name="l00109"></a>00109 {
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<a name="l00110"></a>00110 <a class="code" href="classmoeoEntropyMetric.html#d4046a304badfe78aa35b2d57938ffe9">vect_min_val</a>.clear ();
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<a name="l00111"></a>00111 <a class="code" href="classmoeoEntropyMetric.html#af0ae9645bdbb993de4bc990a0a08883">vect_max_val</a>.clear ();
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<a name="l00112"></a>00112
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<a name="l00113"></a>00113 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> i = 0; i < EOFitness::fitness_traits::nObjectives ();
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<a name="l00114"></a>00114 i++)
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<a name="l00115"></a>00115 {
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<a name="l00116"></a>00116 <span class="keywordtype">float</span> min_val = _f.front ()[i], max_val = min_val;
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<a name="l00117"></a>00117 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j = 1; j < _f.size (); j++)
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<a name="l00118"></a>00118 {
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<a name="l00119"></a>00119 <span class="keywordflow">if</span> (_f[j][i] < min_val)
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<a name="l00120"></a>00120 min_val = _f[j][i];
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<a name="l00121"></a>00121 <span class="keywordflow">if</span> (_f[j][i] > max_val)
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<a name="l00122"></a>00122 max_val = _f[j][i];
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<a name="l00123"></a>00123 }
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<a name="l00124"></a>00124 <a class="code" href="classmoeoEntropyMetric.html#d4046a304badfe78aa35b2d57938ffe9">vect_min_val</a>.push_back (min_val);
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<a name="l00125"></a>00125 <a class="code" href="classmoeoEntropyMetric.html#af0ae9645bdbb993de4bc990a0a08883">vect_max_val</a>.push_back (max_val);
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<a name="l00126"></a>00126 }
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<a name="l00127"></a>00127 }
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<a name="l00128"></a>00128
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<a name="l00129"></a><a class="code" href="classmoeoEntropyMetric.html#bc32468b148a0da4eb21a9fc14dfafae">00129</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#bc32468b148a0da4eb21a9fc14dfafae">normalize</a> (std::vector < EOFitness > &_f)
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<a name="l00130"></a>00130 {
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<a name="l00131"></a>00131 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < EOFitness::fitness_traits::nObjectives (); i++)
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<a name="l00132"></a>00132 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j = 0; j < _f.size (); j++)
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<a name="l00133"></a>00133 _f[j][i] =
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<a name="l00134"></a>00134 (_f[j][i] - <a class="code" href="classmoeoEntropyMetric.html#d4046a304badfe78aa35b2d57938ffe9">vect_min_val</a>[i]) / (<a class="code" href="classmoeoEntropyMetric.html#af0ae9645bdbb993de4bc990a0a08883">vect_max_val</a>[i] - <a class="code" href="classmoeoEntropyMetric.html#d4046a304badfe78aa35b2d57938ffe9">vect_min_val</a>[i]);
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<a name="l00135"></a>00135 }
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<a name="l00136"></a>00136
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<a name="l00137"></a><a class="code" href="classmoeoEntropyMetric.html#2de60a0e6be362f074b50e6b455152ab">00137</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#2de60a0e6be362f074b50e6b455152ab">computeUnion</a> (<span class="keyword">const</span> std::vector < EOFitness > &_f1,
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<a name="l00138"></a>00138 <span class="keyword">const</span> std::vector < EOFitness > &_f2,
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<a name="l00139"></a>00139 std::vector < EOFitness > &_f)
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<a name="l00140"></a>00140 {
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<a name="l00141"></a>00141 _f = _f1;
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<a name="l00142"></a>00142 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < _f2.size (); i++)
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<a name="l00143"></a>00143 {
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<a name="l00144"></a>00144 <span class="keywordtype">bool</span> b = <span class="keyword">false</span>;
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<a name="l00145"></a>00145 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j = 0; j < _f1.size (); j++)
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<a name="l00146"></a>00146 <span class="keywordflow">if</span> (_f1[j] == _f2[i])
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<a name="l00147"></a>00147 {
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<a name="l00148"></a>00148 b = <span class="keyword">true</span>;
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<a name="l00149"></a>00149 <span class="keywordflow">break</span>;
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<a name="l00150"></a>00150 }
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<a name="l00151"></a>00151 <span class="keywordflow">if</span> (!b)
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<a name="l00152"></a>00152 _f.push_back (_f2[i]);
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<a name="l00153"></a>00153 }
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<a name="l00154"></a>00154 }
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<a name="l00155"></a>00155
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<a name="l00156"></a><a class="code" href="classmoeoEntropyMetric.html#a9369be315e139ebdf19fac09ad0563f">00156</a> <span class="keywordtype">unsigned</span> <a class="code" href="classmoeoEntropyMetric.html#a9369be315e139ebdf19fac09ad0563f">howManyInNicheOf</a> (<span class="keyword">const</span> std::vector < EOFitness > &_f,
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<a name="l00157"></a>00157 <span class="keyword">const</span> <a class="code" href="classmoeoEntropyMetric.html#306b72d2236de1ecbae986c65490a8fe">EOFitness</a> & _s, <span class="keywordtype">unsigned</span> _size)
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<a name="l00158"></a>00158 {
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<a name="l00159"></a>00159 <span class="keywordtype">unsigned</span> n = 0;
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<a name="l00160"></a>00160 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < _f.size (); i++)
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<a name="l00161"></a>00161 {
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<a name="l00162"></a>00162 <span class="keywordflow">if</span> (<a class="code" href="classmoeoEntropyMetric.html#34f825ce7c53132f7218483130da8652">euclidianDistance</a> (_f[i], _s) < (_s.size () / (double) _size))
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<a name="l00163"></a>00163 n++;
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<a name="l00164"></a>00164 }
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<a name="l00165"></a>00165 <span class="keywordflow">return</span> n;
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<a name="l00166"></a>00166 }
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<a name="l00167"></a>00167
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<a name="l00168"></a><a class="code" href="classmoeoEntropyMetric.html#34f825ce7c53132f7218483130da8652">00168</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoEntropyMetric.html#34f825ce7c53132f7218483130da8652">euclidianDistance</a> (<span class="keyword">const</span> <a class="code" href="classmoeoEntropyMetric.html#306b72d2236de1ecbae986c65490a8fe">EOFitness</a> & _set1, <span class="keyword">const</span> <a class="code" href="classmoeoEntropyMetric.html#306b72d2236de1ecbae986c65490a8fe">EOFitness</a> & _to,
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<a name="l00169"></a>00169 <span class="keywordtype">unsigned</span> _deg = 2)
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<a name="l00170"></a>00170 {
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<a name="l00171"></a>00171 <span class="keywordtype">double</span> dist = 0;
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<a name="l00172"></a>00172 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < _set1.size (); i++)
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<a name="l00173"></a>00173 dist += pow (fabs (_set1[i] - _to[i]), (<span class="keywordtype">int</span>) _deg);
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<a name="l00174"></a>00174 <span class="keywordflow">return</span> pow (dist, 1.0 / _deg);
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<a name="l00175"></a>00175 }
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<a name="l00176"></a>00176
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<a name="l00177"></a>00177 };
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<a name="l00178"></a>00178
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<a name="l00179"></a>00179 <span class="preprocessor">#endif </span><span class="comment">/*MOEOENTROPYMETRIC_H_ */</span>
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Tue Dec 12 11:16:35 2006 for ParadisEO-MOEO by
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1 </small></address>
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