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<h1>moeoHypervolumeBinaryMetric.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">// moeoHypervolumeBinaryMetric.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 MOEOHYPERVOLUMEBINARYMETRIC_H_</span>
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<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#define MOEOHYPERVOLUMEBINARYMETRIC_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 <stdexcept></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/moeoNormalizedSolutionVsSolutionBinaryMetric.h></span>
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<a name="l00019"></a>00019
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<a name="l00028"></a>00028 <span class="keyword">template</span> < <span class="keyword">class</span> ObjectiveVector >
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<a name="l00029"></a><a class="code" href="classmoeoHypervolumeBinaryMetric.html">00029</a> <span class="keyword">class </span><a class="code" href="classmoeoHypervolumeBinaryMetric.html">moeoHypervolumeBinaryMetric</a> : <span class="keyword">public</span> <a class="code" href="classmoeoNormalizedSolutionVsSolutionBinaryMetric.html">moeoNormalizedSolutionVsSolutionBinaryMetric</a> < ObjectiveVector, double >
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<a name="l00030"></a>00030 {
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<a name="l00031"></a>00031 <span class="keyword">public</span>:
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<a name="l00032"></a>00032
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<a name="l00037"></a><a class="code" href="classmoeoHypervolumeBinaryMetric.html#01a07711a7c9f38cdc2c76e40a3c5958">00037</a> <a class="code" href="classmoeoHypervolumeBinaryMetric.html#01a07711a7c9f38cdc2c76e40a3c5958">moeoHypervolumeBinaryMetric</a>(<span class="keywordtype">double</span> _rho = 1.1) : <a class="code" href="classmoeoHypervolumeBinaryMetric.html#2498b6010719249121e3a371978d927b">rho</a>(_rho)
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<a name="l00038"></a>00038 {
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<a name="l00039"></a>00039 <span class="comment">// not-a-maximization problem check</span>
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<a name="l00040"></a>00040 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<ObjectiveVector::Traits::nObjectives(); i++)
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<a name="l00041"></a>00041 {
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<a name="l00042"></a>00042 <span class="keywordflow">if</span> (ObjectiveVector::Traits::maximizing(i))
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<a name="l00043"></a>00043 {
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<a name="l00044"></a>00044 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Hypervolume binary metric not yet implemented for a maximization problem in moeoHypervolumeBinaryMetric"</span>);
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<a name="l00045"></a>00045 }
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<a name="l00046"></a>00046 }
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<a name="l00047"></a>00047 <span class="comment">// consistency check</span>
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<a name="l00048"></a>00048 <span class="keywordflow">if</span> (<a class="code" href="classmoeoHypervolumeBinaryMetric.html#2498b6010719249121e3a371978d927b">rho</a> < 1)
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<a name="l00049"></a>00049 {
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<a name="l00050"></a>00050 std::cout << <span class="stringliteral">"Warning, value used to compute the reference point rho for the hypervolume calculation must not be smaller than 1"</span> << std::endl;
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<a name="l00051"></a>00051 std::cout << <span class="stringliteral">"Adjusted to 1"</span> << std::endl;
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<a name="l00052"></a>00052 <a class="code" href="classmoeoHypervolumeBinaryMetric.html#2498b6010719249121e3a371978d927b">rho</a> = 1;
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<a name="l00053"></a>00053 }
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<a name="l00054"></a>00054 }
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<a name="l00055"></a>00055
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<a name="l00056"></a>00056
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<a name="l00063"></a><a class="code" href="classmoeoHypervolumeBinaryMetric.html#c147309a5ba6b365be926e6083c5b9f2">00063</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoHypervolumeBinaryMetric.html#c147309a5ba6b365be926e6083c5b9f2">operator()</a>(<span class="keyword">const</span> ObjectiveVector & _o1, <span class="keyword">const</span> ObjectiveVector & _o2)
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<a name="l00064"></a>00064 {
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<a name="l00065"></a>00065 <span class="keywordtype">double</span> result;
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<a name="l00066"></a>00066 <span class="comment">// if _o2 is dominated by _o1</span>
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<a name="l00067"></a>00067 <span class="keywordflow">if</span> ( <a class="code" href="classmoeoHypervolumeBinaryMetric.html#2bbeb34a5bfde25b9eadc7eca899906e">paretoComparator</a>(_o2,_o1) )
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<a name="l00068"></a>00068 {
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<a name="l00069"></a>00069 result = - <a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">hypervolume</a>(_o1, _o2, ObjectiveVector::Traits::nObjectives()-1);
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<a name="l00070"></a>00070 }
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<a name="l00071"></a>00071 <span class="keywordflow">else</span>
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<a name="l00072"></a>00072 {
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<a name="l00073"></a>00073 result = <a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">hypervolume</a>(_o2, _o1, ObjectiveVector::Traits::nObjectives()-1);
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<a name="l00074"></a>00074 }
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<a name="l00075"></a>00075 <span class="keywordflow">return</span> result;
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<a name="l00076"></a>00076 }
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<a name="l00077"></a>00077
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<a name="l00078"></a>00078
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<a name="l00079"></a>00079 <span class="keyword">private</span>:
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<a name="l00080"></a>00080
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<a name="l00082"></a><a class="code" href="classmoeoHypervolumeBinaryMetric.html#2498b6010719249121e3a371978d927b">00082</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoHypervolumeBinaryMetric.html#2498b6010719249121e3a371978d927b">rho</a>;
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<a name="l00084"></a>00084 <span class="keyword">using</span> moeoNormalizedSolutionVsSolutionBinaryMetric < ObjectiveVector, double ><a class="code" href="classmoeoNormalizedSolutionVsSolutionBinaryMetric.html#81bff9a83c74f7f7f8a1db28c09c4c38"> :: bounds</a>;
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<a name="l00086"></a><a class="code" href="classmoeoHypervolumeBinaryMetric.html#2bbeb34a5bfde25b9eadc7eca899906e">00086</a> moeoParetoObjectiveVectorComparator < ObjectiveVector > <a class="code" href="classmoeoHypervolumeBinaryMetric.html#2bbeb34a5bfde25b9eadc7eca899906e">paretoComparator</a>;
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<a name="l00087"></a>00087
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<a name="l00088"></a>00088
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<a name="l00096"></a><a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">00096</a> <span class="keywordtype">double</span> <a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">hypervolume</a>(<span class="keyword">const</span> ObjectiveVector & _o1, <span class="keyword">const</span> ObjectiveVector & _o2, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _obj, <span class="keyword">const</span> <span class="keywordtype">bool</span> _flag = <span class="keyword">false</span>)
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<a name="l00097"></a>00097 {
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<a name="l00098"></a>00098 <span class="keywordtype">double</span> result;
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<a name="l00099"></a>00099 <span class="keywordtype">double</span> range = <a class="code" href="classmoeoHypervolumeBinaryMetric.html#2498b6010719249121e3a371978d927b">rho</a> * <a class="code" href="classmoeoNormalizedSolutionVsSolutionBinaryMetric.html#81bff9a83c74f7f7f8a1db28c09c4c38">bounds</a>[_obj].range();
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<a name="l00100"></a>00100 <span class="keywordtype">double</span> max = <a class="code" href="classmoeoNormalizedSolutionVsSolutionBinaryMetric.html#81bff9a83c74f7f7f8a1db28c09c4c38">bounds</a>[_obj].minimum() + range;
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<a name="l00101"></a>00101 <span class="comment">// value of _1 for the objective _obj</span>
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<a name="l00102"></a>00102 <span class="keywordtype">double</span> v1 = _o1[_obj];
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<a name="l00103"></a>00103 <span class="comment">// value of _2 for the objective _obj (if _flag=true, v2=max)</span>
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<a name="l00104"></a>00104 <span class="keywordtype">double</span> v2;
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<a name="l00105"></a>00105 <span class="keywordflow">if</span> (_flag)
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<a name="l00106"></a>00106 {
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<a name="l00107"></a>00107 v2 = max;
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<a name="l00108"></a>00108 }
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<a name="l00109"></a>00109 <span class="keywordflow">else</span>
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<a name="l00110"></a>00110 {
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<a name="l00111"></a>00111 v2 = _o2[_obj];
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<a name="l00112"></a>00112 }
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<a name="l00113"></a>00113 <span class="comment">// computation of the volume</span>
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<a name="l00114"></a>00114 <span class="keywordflow">if</span> (_obj == 0)
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<a name="l00115"></a>00115 {
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<a name="l00116"></a>00116 <span class="keywordflow">if</span> (v1 < v2)
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<a name="l00117"></a>00117 {
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<a name="l00118"></a>00118 result = (v2 - v1) / range;
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<a name="l00119"></a>00119 }
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<a name="l00120"></a>00120 <span class="keywordflow">else</span>
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<a name="l00121"></a>00121 {
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<a name="l00122"></a>00122 result = 0;
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<a name="l00123"></a>00123 }
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<a name="l00124"></a>00124 }
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<a name="l00125"></a>00125 <span class="keywordflow">else</span>
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<a name="l00126"></a>00126 {
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<a name="l00127"></a>00127 <span class="keywordflow">if</span> (v1 < v2)
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<a name="l00128"></a>00128 {
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<a name="l00129"></a>00129 result = ( <a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">hypervolume</a>(_o1, _o2, _obj-1, <span class="keyword">true</span>) * (v2 - v1) / range ) + ( <a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">hypervolume</a>(_o1, _o2, _obj-1) * (max - v2) / range );
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<a name="l00130"></a>00130 }
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<a name="l00131"></a>00131 <span class="keywordflow">else</span>
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<a name="l00132"></a>00132 {
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<a name="l00133"></a>00133 result = <a class="code" href="classmoeoHypervolumeBinaryMetric.html#e841d13001c63b043981a41fcb49218a">hypervolume</a>(_o1, _o2, _obj-1) * (max - v2) / range;
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<a name="l00134"></a>00134 }
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<a name="l00135"></a>00135 }
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<a name="l00136"></a>00136 <span class="keywordflow">return</span> result;
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<a name="l00137"></a>00137 }
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<a name="l00138"></a>00138
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<a name="l00139"></a>00139 };
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<a name="l00140"></a>00140
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<a name="l00141"></a>00141 <span class="preprocessor">#endif </span><span class="comment">/*MOEOHYPERVOLUMEBINARYMETRIC_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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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.7 </small></address>
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