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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 <vector></span>
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<a name="l00017"></a>00017 <span class="preprocessor">#include <comparator/moeoParetoObjectiveVectorComparator.h></span>
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<a name="l00018"></a>00018 <span class="preprocessor">#include <metric/moeoMetric.h></span>
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<a name="l00019"></a>00019
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<a name="l00024"></a>00024 <span class="keyword">template</span> < <span class="keyword">class</span> ObjectiveVector >
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<a name="l00025"></a><a class="code" href="classmoeoEntropyMetric.html">00025</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="l00026"></a>00026 {
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<a name="l00027"></a>00027 <span class="keyword">public</span>:
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<a name="l00028"></a>00028
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<a name="l00034"></a><a class="code" href="classmoeoEntropyMetric.html#191a8cdda7873e20338e678c5a7b927b">00034</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="l00035"></a>00035 <span class="comment">// normalization</span>
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<a name="l00036"></a>00036 std::vector< ObjectiveVector > set1 = _set1;
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<a name="l00037"></a>00037 std::vector< ObjectiveVector > set2= _set2;
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<a name="l00038"></a>00038 <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a> (set1);
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<a name="l00039"></a>00039 <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a> (set2);
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<a name="l00040"></a>00040 <a class="code" href="classmoeoEntropyMetric.html#51dd04bdd0ac6315f4f5956fb726cec1">prenormalize</a> (set1);
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<a name="l00041"></a>00041 <a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">normalize</a> (set1);
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<a name="l00042"></a>00042 <a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">normalize</a> (set2);
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<a name="l00043"></a>00043
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<a name="l00044"></a>00044 <span class="comment">// making of PO*</span>
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<a name="l00045"></a>00045 std::vector< ObjectiveVector > star; <span class="comment">// rotf :-)</span>
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<a name="l00046"></a>00046 <a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">computeUnion</a> (set1, set2, star);
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<a name="l00047"></a>00047 <a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">removeDominated</a> (star);
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<a name="l00048"></a>00048
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<a name="l00049"></a>00049 <span class="comment">// making of PO1 U PO*</span>
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<a name="l00050"></a>00050 std::vector< ObjectiveVector > union_set1_star; <span class="comment">// rotf again ...</span>
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<a name="l00051"></a>00051 <a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">computeUnion</a> (set1, star, union_set1_star);
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<a name="l00052"></a>00052
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<a name="l00053"></a>00053 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> C = union_set1_star.size();
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<a name="l00054"></a>00054 <span class="keywordtype">float</span> omega=0;
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<a name="l00055"></a>00055 <span class="keywordtype">float</span> entropy=0;
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<a name="l00056"></a>00056
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<a name="l00057"></a>00057 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0 ; i<C ; i++) {
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<a name="l00058"></a>00058 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> N_i = <a class="code" href="classmoeoEntropyMetric.html#7977dac672bd6e2e1dfff8cf7954c180">howManyInNicheOf</a> (union_set1_star, union_set1_star[i], star.size());
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<a name="l00059"></a>00059 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n_i = <a class="code" href="classmoeoEntropyMetric.html#7977dac672bd6e2e1dfff8cf7954c180">howManyInNicheOf</a> (set1, union_set1_star[i], star.size());
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<a name="l00060"></a>00060 <span class="keywordflow">if</span> (n_i > 0) {
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<a name="l00061"></a>00061 omega += 1.0 / N_i;
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<a name="l00062"></a>00062 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="l00063"></a>00063 }
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<a name="l00064"></a>00064 }
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<a name="l00065"></a>00065 entropy /= - log (omega);
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<a name="l00066"></a>00066 entropy *= log (2.0);
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<a name="l00067"></a>00067 <span class="keywordflow">return</span> entropy;
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<a name="l00068"></a>00068 }
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<a name="l00069"></a>00069
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<a name="l00070"></a>00070
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<a name="l00071"></a>00071 <span class="keyword">private</span>:
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<a name="l00072"></a>00072
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<a name="l00074"></a><a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">00074</a> std::vector<double> <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>;
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<a name="l00076"></a><a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">00076</a> std::vector<double> <a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>;
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<a name="l00078"></a><a class="code" href="classmoeoEntropyMetric.html#227ce550253c35957300c6e11730c847">00078</a> moeoParetoObjectiveVectorComparator < ObjectiveVector > <a class="code" href="classmoeoEntropyMetric.html#227ce550253c35957300c6e11730c847">paretoComparator</a>;
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<a name="l00079"></a>00079
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<a name="l00080"></a>00080
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<a name="l00085"></a><a class="code" href="classmoeoEntropyMetric.html#198a717fd0bab0bb91346399c1021f82">00085</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="l00086"></a>00086 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0 ; i<_f.size(); i++) {
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<a name="l00087"></a>00087 <span class="keywordtype">bool</span> dom = <span class="keyword">false</span>;
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<a name="l00088"></a>00088 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j=0; j<_f.size(); j++)
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<a name="l00089"></a>00089 <span class="keywordflow">if</span> (i != j && <a class="code" href="classmoeoEntropyMetric.html#227ce550253c35957300c6e11730c847">paretoComparator</a>(_f[i],_f[j]))
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<a name="l00090"></a>00090 {
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<a name="l00091"></a>00091 dom = <span class="keyword">true</span>;
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<a name="l00092"></a>00092 <span class="keywordflow">break</span>;
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<a name="l00093"></a>00093 }
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<a name="l00094"></a>00094 <span class="keywordflow">if</span> (dom) {
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<a name="l00095"></a>00095 _f[i] = _f.back();
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<a name="l00096"></a>00096 _f.pop_back();
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<a name="l00097"></a>00097 i--;
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<a name="l00098"></a>00098 }
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<a name="l00099"></a>00099 }
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<a name="l00100"></a>00100 }
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<a name="l00101"></a>00101
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<a name="l00102"></a>00102
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<a name="l00107"></a><a class="code" href="classmoeoEntropyMetric.html#51dd04bdd0ac6315f4f5956fb726cec1">00107</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="l00108"></a>00108 <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>.clear();
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<a name="l00109"></a>00109 <a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>.clear();
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<a name="l00110"></a>00110
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<a name="l00111"></a>00111 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0 ; i<ObjectiveVector::nObjectives(); i++) {
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<a name="l00112"></a>00112 <span class="keywordtype">float</span> min_val = _f.front()[i], max_val = min_val;
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<a name="l00113"></a>00113 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j=1 ; j<_f.size(); j++) {
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<a name="l00114"></a>00114 <span class="keywordflow">if</span> (_f[j][i] < min_val)
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<a name="l00115"></a>00115 min_val = _f[j][i];
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<a name="l00116"></a>00116 <span class="keywordflow">if</span> (_f[j][i]>max_val)
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<a name="l00117"></a>00117 max_val = _f[j][i];
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<a name="l00118"></a>00118 }
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<a name="l00119"></a>00119 <a class="code" href="classmoeoEntropyMetric.html#e423d7d4416ef371ce7b0fd24c3212f8">vect_min_val</a>.push_back(min_val);
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<a name="l00120"></a>00120 <a class="code" href="classmoeoEntropyMetric.html#f5fad6d144520fd1403f774f98b18b99">vect_max_val</a>.push_back (max_val);
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<a name="l00121"></a>00121 }
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<a name="l00122"></a>00122 }
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124
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<a name="l00129"></a><a class="code" href="classmoeoEntropyMetric.html#2ed5771c3c611634b415f4be48cad172">00129</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="l00130"></a>00130 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0 ; i<ObjectiveVector::nObjectives(); i++)
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<a name="l00131"></a>00131 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j=0; j<_f.size(); j++)
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<a name="l00132"></a>00132 _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="l00133"></a>00133 }
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<a name="l00134"></a>00134
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<a name="l00135"></a>00135
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<a name="l00142"></a><a class="code" href="classmoeoEntropyMetric.html#4b99c1842d780a89bda08e99a59e3e29">00142</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="l00143"></a>00143 _f = _f1 ;
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<a name="l00144"></a>00144 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<_f2.size(); i++) {
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<a name="l00145"></a>00145 <span class="keywordtype">bool</span> b = <span class="keyword">false</span>;
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<a name="l00146"></a>00146 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j=0; j<_f1.size(); j ++)
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<a name="l00147"></a>00147 <span class="keywordflow">if</span> (_f1[j] == _f2[i]) {
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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>00156
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<a name="l00160"></a><a class="code" href="classmoeoEntropyMetric.html#7977dac672bd6e2e1dfff8cf7954c180">00160</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classmoeoEntropyMetric.html#7977dac672bd6e2e1dfff8cf7954c180">howManyInNicheOf</a> (<span class="keyword">const</span> std::vector< ObjectiveVector > & _f, <span class="keyword">const</span> ObjectiveVector & _s, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _size) {
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<a name="l00161"></a>00161 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> n=0;
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<a name="l00162"></a>00162 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0 ; i<_f.size(); i++) {
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<a name="l00163"></a>00163 <span class="keywordflow">if</span> (<a class="code" href="classmoeoEntropyMetric.html#4716a673498a0681fb78414e390824a3">euclidianDistance</a>(_f[i], _s) < (_s.size() / (double) _size))
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<a name="l00164"></a>00164 n++;
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<a name="l00165"></a>00165 }
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<a name="l00166"></a>00166 <span class="keywordflow">return</span> n;
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<a name="l00167"></a>00167 }
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<a name="l00168"></a>00168
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<a name="l00169"></a>00169
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<a name="l00173"></a><a class="code" href="classmoeoEntropyMetric.html#4716a673498a0681fb78414e390824a3">00173</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoEntropyMetric.html#4716a673498a0681fb78414e390824a3">euclidianDistance</a> (<span class="keyword">const</span> ObjectiveVector & _set1, <span class="keyword">const</span> ObjectiveVector & _to, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _deg = 2) {
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<a name="l00174"></a>00174 <span class="keywordtype">double</span> dist=0;
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<a name="l00175"></a>00175 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<_set1.size(); i++)
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<a name="l00176"></a>00176 dist += pow(fabs(_set1[i] - _to[i]), (<span class="keywordtype">int</span>)_deg);
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<a name="l00177"></a>00177 <span class="keywordflow">return</span> pow(dist, 1.0 / _deg);
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<a name="l00178"></a>00178 }
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<a name="l00179"></a>00179
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<a name="l00180"></a>00180 };
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<a name="l00181"></a>00181
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<a name="l00182"></a>00182 <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 Jun 26 15:13:04 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> 1.4.7 </small></address>
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