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git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@40 331e1502-861f-0410-8da2-ba01fb791d7f
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<h1>eoParetoFitness.h</h1><div class="fragment"><pre class="fragment">00001 <span class="comment">// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-</span>
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00002
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00003 <span class="comment">//-----------------------------------------------------------------------------</span>
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00004 <span class="comment">// eoParetoFitness.h</span>
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00005 <span class="comment">// (c) Maarten Keijzer and Marc Schoenauer, 2001</span>
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00006 <span class="comment">/*</span>
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00007 <span class="comment"> This library is free software; you can redistribute it and/or</span>
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00008 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
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00009 <span class="comment"> License as published by the Free Software Foundation; either</span>
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00010 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
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00011 <span class="comment"></span>
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00012 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
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00013 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
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00014 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
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00015 <span class="comment"> Lesser General Public License for more details.</span>
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00016 <span class="comment"></span>
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00017 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
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00018 <span class="comment"> License along with this library; if not, write to the Free Software</span>
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00019 <span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
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00020 <span class="comment"></span>
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00021 <span class="comment"> Contact: mak@dhi.dk</span>
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00022 <span class="comment"> Marc.Schoenauer@inria.fr</span>
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00023 <span class="comment"> */</span>
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00024 <span class="comment">//-----------------------------------------------------------------------------</span>
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00025
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00026 <span class="preprocessor">#ifndef _eoParetoFitness_h</span>
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00027 <span class="preprocessor"></span><span class="preprocessor">#define _eoParetoFitness_h</span>
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00028 <span class="preprocessor"></span>
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00029 <span class="preprocessor">#include <math.h></span>
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00030 <span class="preprocessor">#include <vector></span>
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00031 <span class="preprocessor">#include <stdexcept></span>
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00032 <span class="preprocessor">#include <iostream></span>
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00033
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00034
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<a name="l00042"></a><a class="code" href="classeo_pareto_fitness_traits.html">00042</a> <span class="keyword">class </span><a class="code" href="classeo_pareto_fitness_traits.html">eoParetoFitnessTraits</a>
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00043 {
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00044 <span class="keyword">public</span> :
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00045
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00046 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> nObjectives() { <span class="keywordflow">return</span> 2; }
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00047 <span class="keyword">static</span> <span class="keywordtype">double</span> tol() { <span class="keywordflow">return</span> 1e-6; }
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00048 <span class="keyword">static</span> <span class="keywordtype">bool</span> maximizing(<span class="keywordtype">int</span> which) { <span class="keywordflow">return</span> <span class="keyword">true</span>; } <span class="comment">// by default: all are maximizing</span>
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00049 };
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00050
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<a name="l00056"></a><a class="code" href="classeo_variable_pareto_traits.html">00056</a> <span class="keyword">class </span><a class="code" href="classeo_variable_pareto_traits.html">eoVariableParetoTraits</a> : <span class="keyword">public</span> <a class="code" href="classeo_pareto_fitness_traits.html">eoParetoFitnessTraits</a>
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00057 {
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00058 <span class="keyword">public</span> :
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<a name="l00060"></a><a class="code" href="classeo_variable_pareto_traits.html#e0">00060</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classeo_variable_pareto_traits.html#e0">setUp</a>(<span class="keywordtype">unsigned</span> _n, std::vector<bool> & _b)
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00061 {
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00062 <span class="comment">// possible problems</span>
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00063 <span class="keywordflow">if</span> ( nObj && (nObj != _n) ) <span class="comment">// was already set to a different value</span>
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00064 {
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00065 std::cout << <span class="stringliteral">"WARNING\n"</span>;
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00066 std::cout << <span class="stringliteral">"WARNING : you are changing the number of objectives\n"</span>;
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00067 std::cout << <span class="stringliteral">"WARNING : Make sure all existing objects are destroyed\n"</span>;
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00068 std::cout << <span class="stringliteral">"WARNING\n"</span>;
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00069 }
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00070 nObj=_n;
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00071 bObj=_b;
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00072 <span class="keywordflow">if</span> (nObj != bObj.size())
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00073 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Number of objectives and min/max size don't match in VariableParetoTraits::setup"</span>);
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00074 }
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00075
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<a name="l00077"></a><a class="code" href="classeo_variable_pareto_traits.html#e1">00077</a> <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <a class="code" href="classeo_variable_pareto_traits.html#e1">nObjectives</a>()
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00078 {
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00079 <span class="preprocessor">#ifndef NDEBUG</span>
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00080 <span class="preprocessor"></span> <span class="keywordflow">if</span> (!nObj)
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00081 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Number of objectives not assigned in VariableParetoTraits"</span>);
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00082 <span class="preprocessor">#endif</span>
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00083 <span class="preprocessor"></span> <span class="keywordflow">return</span> nObj;
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00084 }
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00085 <span class="keyword">static</span> <span class="keywordtype">bool</span> maximizing(<span class="keywordtype">unsigned</span> _i)
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00086 {
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00087 <span class="preprocessor">#ifndef NDEBUG</span>
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00088 <span class="preprocessor"></span> <span class="keywordflow">if</span> (_i >= bObj.size())
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00089 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Wrong index in VariableParetoTraits"</span>);
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00090 <span class="preprocessor">#endif</span>
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00091 <span class="preprocessor"></span> <span class="keywordflow">return</span> bObj[_i];
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00092 }
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00093 <span class="keyword">private</span>:
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00094 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> nObj;
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00095 <span class="keyword">static</span> std::vector<bool> bObj;
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00096 };
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00097
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00107 <span class="keyword">template</span> <<span class="keyword">class</span> FitnessTraits = eoParetoFitnessTraits>
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<a name="l00108"></a><a class="code" href="classeo_pareto_fitness.html">00108</a> <span class="keyword">class </span><a class="code" href="classeo_pareto_fitness.html">eoParetoFitness</a> : <span class="keyword">public</span> std::vector<double>
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00109 {
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00110 <span class="keyword">public</span> :
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00111
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00112 <span class="keyword">typedef</span> FitnessTraits fitness_traits;
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00113
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00114 <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness</a>(<span class="keywordtype">void</span>) : std::vector<double>(FitnessTraits::nObjectives(),0.0) {}
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00115
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00116 <span class="comment">// Ctr from a std::vector<double></span>
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00117 <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness</a>(std::vector<double> & _v) : std::vector<double>(_v) {}
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00118
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00119
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<a name="l00123"></a><a class="code" href="classeo_pareto_fitness.html#e0">00123</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classeo_pareto_fitness.html#e0">setUp</a>(<span class="keywordtype">unsigned</span> _n, std::vector<bool> & _b) {FitnessTraits::setUp(_n, _b);}
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00124 <span class="keyword">static</span> <span class="keywordtype">bool</span> maximizing(<span class="keywordtype">unsigned</span> _i) { <span class="keywordflow">return</span> FitnessTraits::maximizing(_i);}
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00125
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00127 <span class="comment">//bool operator<(const eoParetoFitness<FitnessTraits>& _other) const</span>
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<a name="l00128"></a><a class="code" href="classeo_pareto_fitness.html#a2">00128</a> <span class="keywordtype">bool</span> <a class="code" href="classeo_pareto_fitness.html#a2">dominates</a>(<span class="keyword">const</span> <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>& _other)<span class="keyword"> const</span>
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00129 <span class="keyword"> </span>{
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00130 <span class="keywordtype">bool</span> dom = <span class="keyword">false</span>;
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00131
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00132 <span class="keywordtype">double</span> tol = FitnessTraits::tol();
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00133 <span class="keyword">const</span> std::vector<double>& performance = *<span class="keyword">this</span>;
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00134 <span class="keyword">const</span> std::vector<double>& otherperformance = _other;
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00135
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00136 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < FitnessTraits::nObjectives(); ++i)
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00137 {
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00138 <span class="keywordtype">bool</span> maxim = FitnessTraits::maximizing(i);
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00139 <span class="keywordtype">double</span> aval = maxim? performance[i] : -performance[i];
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00140 <span class="keywordtype">double</span> bval = maxim? otherperformance[i] : -otherperformance[i];
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00141
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00142 <span class="keywordflow">if</span> (fabs(aval - bval) > tol)
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00143 {
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00144 <span class="keywordflow">if</span> (aval < bval)
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00145 {
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00146 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// cannot dominate</span>
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00147 }
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00148 <span class="comment">// else aval < bval</span>
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00149 dom = <span class="keyword">true</span>; <span class="comment">// for the moment: goto next objective</span>
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00150 }
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00151 <span class="comment">//else they're equal in this objective, goto next</span>
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00152 }
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00153
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00154 <span class="keywordflow">return</span> dom;
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00155 }
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00156
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<a name="l00158"></a><a class="code" href="classeo_pareto_fitness.html#a3">00158</a> <span class="keywordtype">bool</span> operator<(const eoParetoFitness<FitnessTraits>& _other) <span class="keyword">const</span>
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00159 {
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00160 <span class="keywordtype">double</span> tol = FitnessTraits::tol();
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00161 <span class="keyword">const</span> std::vector<double>& performance = *<span class="keyword">this</span>;
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00162 <span class="keyword">const</span> std::vector<double>& otherperformance = _other;
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00163 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < FitnessTraits::nObjectives(); ++i)
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00164 {
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00165 <span class="keywordtype">bool</span> maxim = FitnessTraits::maximizing(i);
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00166 <span class="keywordtype">double</span> aval = maxim? performance[i] : -performance[i];
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00167 <span class="keywordtype">double</span> bval = maxim? otherperformance[i] : -otherperformance[i];
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00168
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00169 <span class="keywordflow">if</span> (fabs(aval-bval) > tol)
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00170 {
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00171 <span class="keywordflow">if</span> (aval < bval)
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00172 <span class="keywordflow">return</span> <span class="keyword">true</span>;
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00173
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00174 <span class="keywordflow">return</span> <span class="keyword">false</span>;
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00175 }
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00176 }
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00177
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00178 <span class="keywordflow">return</span> <span class="keyword">false</span>;
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00179 }
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00180
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00181 <span class="keywordtype">bool</span> operator>(<span class="keyword">const</span> <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>& _other)<span class="keyword"> const</span>
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00182 <span class="keyword"> </span>{
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00183 <span class="keywordflow">return</span> _other < *<span class="keyword">this</span>;
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00184 }
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00185
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00186 <span class="keywordtype">bool</span> operator<=(const eoParetoFitness<FitnessTraits>& _other) <span class="keyword">const</span>
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00187 {
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00188 <span class="keywordflow">return</span> operator==(_other) || <a class="code" href="classeo_pareto_fitness.html#a3">operator<</a>(_other);
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00189 }
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00190
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00191 <span class="keywordtype">bool</span> operator>=(<span class="keyword">const</span> <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>& _other)<span class="keyword"> const</span>
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00192 <span class="keyword"> </span>{
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00193 <span class="keywordflow">return</span> _other <= *<span class="keyword">this</span>;
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00194 }
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00195
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00196 <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>& _other)<span class="keyword"> const</span>
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00197 <span class="keyword"> </span>{ <span class="comment">// check if they're all within tolerance</span>
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00198 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < size(); ++i)
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00199 {
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00200 <span class="keywordflow">if</span> (fabs(<span class="keyword">operator</span>[](i) - _other[i]) > FitnessTraits::tol())
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00201 {
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00202 <span class="keywordflow">return</span> <span class="keyword">false</span>;
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00203 }
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00204 }
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00205 <span class="keywordflow">return</span> <span class="keyword">true</span>;
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00206 }
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00207
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00208 <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>& _other)<span class="keyword"> const</span>
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00209 <span class="keyword"> </span>{ <span class="keywordflow">return</span> ! operator==(_other); }
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00210
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00211 };
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00212
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00213 <span class="keyword">template</span> <<span class="keyword">class</span> FitnessTraits>
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00214 std::ostream& operator<<(std::ostream& os, const eoParetoFitness<FitnessTraits>& fitness)
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00215 {
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00216 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < fitness.size(); ++i)
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00217 {
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00218 os << fitness[i] << <span class="charliteral">' '</span>;
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00219 }
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00220 <span class="keywordflow">return</span> os;
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00221 }
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00222
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00223 <span class="keyword">template</span> <<span class="keyword">class</span> FitnessTraits>
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00224 std::istream& operator>>(std::istream& is, <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>& fitness)
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00225 {
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00226 fitness = <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness<FitnessTraits></a>();
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00227 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < fitness.size(); ++i)
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00228 {
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00229 is >> fitness[i];
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00230 }
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00231 <span class="keywordflow">return</span> is;
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00232 }
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00233
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00234 <span class="preprocessor">#endif</span>
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Oct 19 05:06:36 2006 for EO by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
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