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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), 2007</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="l00022"></a>00022 <span class="keyword">template</span> < <span class="keyword">class</span> ObjectiveVector >
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<a name="l00023"></a><a class="code" href="classmoeoEntropyMetric.html">00023</a> <span class="keyword">class </span><a class="code" href="classmoeoEntropyMetric.html">moeoEntropyMetric</a> : <span class="keyword">public</span> <a class="code" href="classmoeoVectorVsVectorBinaryMetric.html">moeoVectorVsVectorBinaryMetric</a> < ObjectiveVector, double >
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<a name="l00024"></a>00024 {
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<a name="l00025"></a>00025 <span class="keyword">public</span>:
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<a name="l00026"></a>00026
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<a name="l00032"></a><a class="code" href="classmoeoEntropyMetric.html#191a8cdda7873e20338e678c5a7b927b">00032</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoEntropyMetric.html#191a8cdda7873e20338e678c5a7b927b">operator()</a>(<span class="keyword">const</span> std::vector < ObjectiveVector > & _set1, <span class="keyword">const</span> std::vector < ObjectiveVector > & _set2) {
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<a name="l00033"></a>00033 <span class="comment">// normalization</span>
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<a name="l00034"></a>00034 std::vector< ObjectiveVector > set1 = _set1;
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<a name="l00035"></a>00035 std::vector< ObjectiveVector > set2= _set2;
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<a name="l00036"></a>00036 <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a> (set1);
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<a name="l00037"></a>00037 <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a> (set2);
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<a name="l00038"></a>00038 <a class="code" href="classmoeoEntropyMetric.html#51dd04bdd0ac6315f4f5956fb726cec1">prenormalize</a> (set1);
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<a name="l00039"></a>00039 <a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">normalize</a> (set1);
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<a name="l00040"></a>00040 <a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">normalize</a> (set2);
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<a name="l00041"></a>00041
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<a name="l00042"></a>00042 <span class="comment">// making of PO*</span>
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<a name="l00043"></a>00043 std::vector< ObjectiveVector > star; <span class="comment">// rotf :-)</span>
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<a name="l00044"></a>00044 <a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">computeUnion</a> (set1, set2, star);
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<a name="l00045"></a>00045 <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a> (star);
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<a name="l00046"></a>00046
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<a name="l00047"></a>00047 <span class="comment">// making of PO1 U PO*</span>
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<a name="l00048"></a>00048 std::vector< ObjectiveVector > union_set1_star; <span class="comment">// rotf again ...</span>
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<a name="l00049"></a>00049 <a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">computeUnion</a> (set1, star, union_set1_star);
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<a name="l00050"></a>00050
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<a name="l00051"></a>00051 <span class="keywordtype">unsigned</span> C = union_set1_star.size();
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<a name="l00052"></a>00052 <span class="keywordtype">float</span> omega=0;
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<a name="l00053"></a>00053 <span class="keywordtype">float</span> entropy=0;
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<a name="l00054"></a>00054
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<a name="l00055"></a>00055 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0 ; i<C ; i++) {
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<a name="l00056"></a>00056 <span class="keywordtype">unsigned</span> N_i = <a class="code" href="classmoeoEntropyMetric.html#74cca13e6ea6d23c4cebb3af92a09ff9">howManyInNicheOf</a> (union_set1_star, union_set1_star[i], star.size());
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<a name="l00057"></a>00057 <span class="keywordtype">unsigned</span> n_i = <a class="code" href="classmoeoEntropyMetric.html#74cca13e6ea6d23c4cebb3af92a09ff9">howManyInNicheOf</a> (set1, union_set1_star[i], star.size());
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<a name="l00058"></a>00058 <span class="keywordflow">if</span> (n_i > 0) {
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<a name="l00059"></a>00059 omega += 1.0 / N_i;
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<a name="l00060"></a>00060 entropy += (float) n_i / (N_i * C) * log (((<span class="keywordtype">float</span>) n_i / C) / log (2.0));
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<a name="l00061"></a>00061 }
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<a name="l00062"></a>00062 }
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<a name="l00063"></a>00063 entropy /= - log (omega);
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<a name="l00064"></a>00064 entropy *= log (2.0);
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<a name="l00065"></a>00065 <span class="keywordflow">return</span> entropy;
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<a name="l00066"></a>00066 }
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<a name="l00067"></a>00067
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069 <span class="keyword">private</span>:
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<a name="l00070"></a>00070
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<a name="l00072"></a><a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">00072</a> std::vector<double> <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>;
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<a name="l00074"></a><a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">00074</a> std::vector<double> <a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>;
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<a name="l00075"></a>00075
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<a name="l00076"></a>00076
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<a name="l00081"></a><a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">00081</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a>(std::vector < ObjectiveVector > & _f) {
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<a name="l00082"></a>00082 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0 ; i<_f.size(); i++) {
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<a name="l00083"></a>00083 <span class="keywordtype">bool</span> dom = <span class="keyword">false</span>;
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<a name="l00084"></a>00084 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j=0; j<_f.size(); j++)
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<a name="l00085"></a>00085 <span class="keywordflow">if</span> (i != j && _f[j].dominates(_f[i])) {
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<a name="l00086"></a>00086 dom = <span class="keyword">true</span>;
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<a name="l00087"></a>00087 <span class="keywordflow">break</span>;
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<a name="l00088"></a>00088 }
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<a name="l00089"></a>00089 <span class="keywordflow">if</span> (dom) {
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<a name="l00090"></a>00090 _f[i] = _f.back();
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<a name="l00091"></a>00091 _f.pop_back();
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<a name="l00092"></a>00092 i--;
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<a name="l00093"></a>00093 }
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<a name="l00094"></a>00094 }
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<a name="l00095"></a>00095 }
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<a name="l00096"></a>00096
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<a name="l00097"></a>00097
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<a name="l00102"></a><a class="code" href="classmoeoEntropyMetric.html#51dd04bdd0ac6315f4f5956fb726cec1">00102</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#51dd04bdd0ac6315f4f5956fb726cec1">prenormalize</a> (<span class="keyword">const</span> std::vector< ObjectiveVector > & _f) {
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<a name="l00103"></a>00103 <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>.clear();
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<a name="l00104"></a>00104 <a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>.clear();
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<a name="l00105"></a>00105
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<a name="l00106"></a>00106 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> i=0 ; i<ObjectiveVector::nObjectives(); i++) {
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<a name="l00107"></a>00107 <span class="keywordtype">float</span> min_val = _f.front()[i], max_val = min_val;
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<a name="l00108"></a>00108 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j=1 ; j<_f.size(); j++) {
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<a name="l00109"></a>00109 <span class="keywordflow">if</span> (_f[j][i] < min_val)
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<a name="l00110"></a>00110 min_val = _f[j][i];
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<a name="l00111"></a>00111 <span class="keywordflow">if</span> (_f[j][i]>max_val)
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<a name="l00112"></a>00112 max_val = _f[j][i];
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<a name="l00113"></a>00113 }
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<a name="l00114"></a>00114 <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>.push_back(min_val);
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<a name="l00115"></a>00115 <a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>.push_back (max_val);
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<a name="l00116"></a>00116 }
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<a name="l00117"></a>00117 }
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<a name="l00118"></a>00118
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<a name="l00119"></a>00119
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<a name="l00124"></a><a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">00124</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">normalize</a> (std::vector< ObjectiveVector > & _f) {
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<a name="l00125"></a>00125 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0 ; i<ObjectiveVector::nObjectives(); i++)
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<a name="l00126"></a>00126 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j=0; j<_f.size(); j++)
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<a name="l00127"></a>00127 _f[j][i] = (_f[j][i] - <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>[i]) / (<a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>[i] - <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>[i]);
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<a name="l00128"></a>00128 }
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<a name="l00129"></a>00129
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<a name="l00130"></a>00130
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<a name="l00137"></a><a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">00137</a> <span class="keywordtype">void</span> <a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">computeUnion</a>(<span class="keyword">const</span> std::vector< ObjectiveVector > & _f1, <span class="keyword">const</span> std::vector< ObjectiveVector > & _f2, std::vector< ObjectiveVector > & _f) {
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<a name="l00138"></a>00138 _f = _f1 ;
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<a name="l00139"></a>00139 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i<_f2.size(); i++) {
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<a name="l00140"></a>00140 <span class="keywordtype">bool</span> b = <span class="keyword">false</span>;
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<a name="l00141"></a>00141 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j=0; j<_f1.size(); j ++)
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<a name="l00142"></a>00142 <span class="keywordflow">if</span> (_f1[j] == _f2[i]) {
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<a name="l00143"></a>00143 b = <span class="keyword">true</span>;
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<a name="l00144"></a>00144 <span class="keywordflow">break</span>;
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<a name="l00145"></a>00145 }
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<a name="l00146"></a>00146 <span class="keywordflow">if</span> (! b)
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<a name="l00147"></a>00147 _f.push_back(_f2[i]);
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<a name="l00148"></a>00148 }
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<a name="l00149"></a>00149 }
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<a name="l00150"></a>00150
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<a name="l00151"></a>00151
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<a name="l00155"></a><a class="code" href="classmoeoEntropyMetric.html#74cca13e6ea6d23c4cebb3af92a09ff9">00155</a> <span class="keywordtype">unsigned</span> <a class="code" href="classmoeoEntropyMetric.html#74cca13e6ea6d23c4cebb3af92a09ff9">howManyInNicheOf</a> (<span class="keyword">const</span> std::vector< ObjectiveVector > & _f, <span class="keyword">const</span> ObjectiveVector & _s, <span class="keywordtype">unsigned</span> _size) {
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<a name="l00156"></a>00156 <span class="keywordtype">unsigned</span> n=0;
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<a name="l00157"></a>00157 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0 ; i<_f.size(); i++) {
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<a name="l00158"></a>00158 <span class="keywordflow">if</span> (<a class="code" href="classmoeoEntropyMetric.html#670d6e5eb1a539aabc741138846bc747">euclidianDistance</a>(_f[i], _s) < (_s.size() / (double) _size))
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<a name="l00159"></a>00159 n++;
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<a name="l00160"></a>00160 }
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<a name="l00161"></a>00161 <span class="keywordflow">return</span> n;
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<a name="l00162"></a>00162 }
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<a name="l00163"></a>00163
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<a name="l00164"></a>00164
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<a name="l00168"></a><a class="code" href="classmoeoEntropyMetric.html#670d6e5eb1a539aabc741138846bc747">00168</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoEntropyMetric.html#670d6e5eb1a539aabc741138846bc747">euclidianDistance</a> (<span class="keyword">const</span> ObjectiveVector & _set1, <span class="keyword">const</span> ObjectiveVector & _to, <span class="keywordtype">unsigned</span> _deg = 2) {
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<a name="l00169"></a>00169 <span class="keywordtype">double</span> dist=0;
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<a name="l00170"></a>00170 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i<_set1.size(); i++)
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<a name="l00171"></a>00171 dist += pow(fabs(_set1[i] - _to[i]), (<span class="keywordtype">int</span>)_deg);
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<a name="l00172"></a>00172 <span class="keywordflow">return</span> pow(dist, 1.0 / _deg);
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<a name="l00173"></a>00173 }
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<a name="l00174"></a>00174
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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 <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 Apr 17 16:53:21 2007 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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