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<title>EO: t-eoPareto.cpp Source File</title>
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<h1>t-eoPareto.cpp</h1><div class="fragment"><pre class="fragment">00001
00002 <span class="preprocessor">#include &lt;eo&gt;</span>
00003
00004 <span class="comment">//#include &lt;utils/eoMOFitnessStat.h&gt;</span>
00005 <span class="preprocessor">#include &lt;eoNDSorting.h&gt;</span>
00006 <span class="preprocessor">#include &lt;eoParetoFitness.h&gt;</span>
00007
00008 <span class="keyword">using</span> <span class="keyword">namespace </span>std;
00009
00010 <span class="comment">// Look: overloading the maximization without overhead (thing can be inlined)</span>
00011 <span class="keyword">class </span>MinimizingFitnessTraits : <span class="keyword">public</span> <a class="code" href="classeo_pareto_fitness_traits.html">eoParetoFitnessTraits</a>
00012 {
00013 <span class="keyword">public</span> :
00014 <span class="keyword">static</span> <span class="keywordtype">bool</span> maximizing(<span class="keywordtype">int</span>) { <span class="keywordflow">return</span> <span class="keyword">false</span>; }
00015 };
00016
00017 <span class="keyword">typedef</span> <a class="code" href="classeo_pareto_fitness.html">eoParetoFitness&lt;MinimizingFitnessTraits&gt;</a> <a class="code" href="classeo_pareto_fitness.html">fitness_type</a>;
00018
00019 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> chromsize=3;
00020 <span class="keyword">const</span> <span class="keywordtype">double</span> minval = -5;
00021 <span class="keyword">const</span> <span class="keywordtype">double</span> maxval = 5;
00022
00023 <span class="keyword">struct </span>eoDouble : <span class="keyword">public</span> EO&lt;fitness_type&gt;
00024 {
00025 <span class="keywordtype">double</span> value[chromsize];
00026 };
00027
00028 <span class="keyword">class </span>Mutate : <span class="keyword">public</span> <a class="code" href="classeo_mon_op.html">eoMonOp</a>&lt;eoDouble&gt;
00029 {
00030 <span class="keywordtype">bool</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(eoDouble&amp; _eo)
00031 {
00032 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; chromsize; ++i)
00033 {
00034 <span class="keywordflow">if</span> (rng.<a class="code" href="classeo_rng.html#a6">flip</a>(1./chromsize))
00035 _eo.value[i] += rng.<a class="code" href="classeo_rng.html#a7">normal</a>() * 0.1 * _eo.value[i];
00036
00037 <span class="keywordflow">if</span> (_eo.value[i] &lt; minval)
00038 _eo.value[i] = minval;
00039 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (_eo.value[i] &gt; maxval)
00040 _eo.value[i] = maxval;
00041 }
00042
00043 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00044 }
00045 };
00046
00047 <span class="keyword">class </span>Eval : <span class="keyword">public</span> <a class="code" href="classeo_eval_func.html">eoEvalFunc</a>&lt;eoDouble&gt;
00048 {
00049 <span class="keywordtype">void</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(eoDouble&amp; _eo)
00050 {
00051 vector&lt;double&gt; x(_eo.value, _eo.value + chromsize);
00052 fitness_type f;
00053
00054 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; chromsize; ++i)
00055 {
00056 <span class="keywordflow">if</span> (i &lt; chromsize-1)
00057 {
00058 f[0] += -10.0 * exp(-0.2 * sqrt(x[i]*x[i] + x[i+1]*x[i+1]));
00059 }
00060
00061 f[1] += pow(fabs(x[i]), 0.8) + 5 * pow(sin(x[i]),3.);
00062 }
00063
00064 _eo.fitness(f);
00065 }
00066 };
00067
00068 <span class="keyword">class </span>Init : <span class="keyword">public</span> <a class="code" href="classeo_init.html">eoInit</a>&lt;eoDouble&gt;
00069 {
00070 <span class="keywordtype">void</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(eoDouble&amp; _eo)
00071 {
00072 _eo.value[0] = rng.<a class="code" href="classeo_rng.html#a4">uniform</a>();
00073
00074 <span class="keywordtype">double</span> range = maxval - minval;
00075
00076 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 1; i &lt; chromsize; ++i)
00077 _eo.value[i] = rng.<a class="code" href="classeo_rng.html#a4">uniform</a>() * range + minval;
00078 _eo.invalidate();
00079 }
00080 };
00081
00086 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT, <span class="keyword">class</span> WorthT = <span class="keywordtype">double</span>&gt;
00087 <span class="keyword">class </span><a class="code" href="classeo_n_d_plus_replacement.html">eoNDPlusReplacement</a> : <span class="keyword">public</span> <a class="code" href="classeo_replacement.html">eoReplacement</a>&lt;EOT&gt;
00088 {
00089 <span class="keyword">public</span>:
00090
00091 <span class="comment">// using eoNDPlusReplacement&lt; EOT, WorthT &gt;::first;</span>
00092
00093 <a class="code" href="classeo_n_d_plus_replacement.html">eoNDPlusReplacement</a>(<a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT, WorthT&gt;</a>&amp; _perf2worth)
00094 : perf2worth(_perf2worth)
00095 {}
00096
00097 <span class="keyword">struct </span>WorthPair : <span class="keyword">public</span> pair&lt;WorthT, const EOT*&gt;
00098 {
00099 <span class="keywordtype">bool</span> operator&lt;(<span class="keyword">const</span> WorthPair&amp; other)<span class="keyword"> const</span>
00100 <span class="keyword"> </span>{ <span class="keywordflow">return</span> other.first &lt; this-&gt;first; }
00101 };
00102
00103
<a name="l00104"></a><a class="code" href="classeo_n_d_plus_replacement.html#a3">00104</a> <span class="keywordtype">void</span> <a class="code" href="classeo_n_d_plus_replacement.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _parents, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _offspring)
00105 {
00106 <span class="keywordtype">unsigned</span> sz = _parents.size();
00107 _parents.reserve(_parents.size() + _offspring.size());
00108 std::copy(_offspring.begin(), _offspring.end(), back_inserter(_parents));
00109
00110 <span class="comment">// calculate worths</span>
00111 perf2worth(_parents);
00112 perf2worth.sort_pop(_parents);
00113 perf2worth.resize(_parents, sz);
00114
00115 _offspring.clear();
00116 }
00117
00118 <span class="keyword">private</span> :
00119 <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT, WorthT&gt;</a>&amp; perf2worth;
00120 };
00121
00122 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
00123 <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT, double&gt;</a>&amp; make_perf2worth(eoParser&amp; parser, <a class="code" href="classeo_state.html">eoState</a>&amp; state)
00124 {
00125
00126 <span class="keywordtype">unsigned</span> what = parser.createParam(<span class="keywordtype">unsigned</span>(1), <span class="stringliteral">"perf2worth"</span>, <span class="stringliteral">"worth mapping indicator : \n\t \</span>
00127 <span class="stringliteral"> 0: non_dominated sorting \n\t\</span>
00128 <span class="stringliteral"> 1: non_dominated sorting 2 \n\t\</span>
00129 <span class="stringliteral"> 2: simple ranking \n\t"</span>, <span class="charliteral">'w'</span>).<a class="code" href="classeo_value_param.html#a2">value</a>();
00130
00131 <span class="keywordflow">switch</span> (what)
00132 {
00133 <span class="keywordflow">case</span> 1 : <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_n_d_sorting___i_i.html">eoNDSorting_II&lt;EOT&gt;</a>());
00134 <span class="keywordflow">case</span> 2 :
00135 {
00136 <a class="code" href="classeo_dominance_map.html">eoDominanceMap&lt;eoDouble&gt;</a>&amp; dominance = state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_dominance_map.html">eoDominanceMap&lt;EOT&gt;</a>);
00137 <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_pareto_ranking.html">eoParetoRanking&lt;EOT&gt;</a>(dominance));
00138 }
00139 }
00140 <span class="comment">//default</span>
00141
00142 <span class="keywordflow">if</span> (what &gt; 2)
00143 {
00144 std::cout &lt;&lt; <span class="stringliteral">"Warning, need an integer &lt; 3 for perf2worth"</span> &lt;&lt; std::endl;
00145 <span class="comment">// should actually set parser flag, but I don't care</span>
00146 }
00147
00148 <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_n_d_sorting___i.html">eoNDSorting_I&lt;EOT&gt;</a>(0.5));
00149 }
00150
00151 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
00152 <a class="code" href="classeo_select_one.html">eoSelectOne&lt;EOT&gt;</a>&amp; make_selector(eoParser&amp; parser, <a class="code" href="classeo_state.html">eoState</a>&amp; state, <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT, double&gt;</a>&amp; perf2worth)
00153 {
00154 <span class="keywordtype">unsigned</span> tournamentsize = parser.createParam(<span class="keywordtype">unsigned</span>(2), <span class="stringliteral">"tournament_size"</span>, <span class="stringliteral">"Tournament Size"</span>, <span class="charliteral">'t'</span>).value();
00155 <span class="keywordtype">double</span> stochtour = parser.createParam(<span class="keywordtype">unsigned</span>(0.95), <span class="stringliteral">"tournament_prob"</span>, <span class="stringliteral">"Probability in stochastic tournament"</span>).value();
00156
00157 <span class="keywordflow">switch</span> (parser.createParam(<span class="keywordtype">unsigned</span>(0), <span class="stringliteral">"selector"</span>, <span class="stringliteral">"Which selector (too lazy to explain: use the source)"</span>, <span class="charliteral">'s'</span>).value())
00158 {
00159 <span class="keywordflow">case</span> 1 : <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_stoch_tournament_worth_select.html">eoStochTournamentWorthSelect&lt;eoDouble&gt;</a>(perf2worth, stochtour));
00160 <span class="keywordflow">case</span> 2 : <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_roulette_worth_select.html">eoRouletteWorthSelect&lt;eoDouble&gt;</a>(perf2worth));
00161 <span class="keywordflow">case</span> 3 : <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_random_select.html">eoRandomSelect&lt;EOT&gt;</a>);
00162 }
00163 <span class="comment">// default</span>
00164
00165 <span class="keywordflow">return</span> state.<a class="code" href="classeo_functor_store.html#a2">storeFunctor</a>(<span class="keyword">new</span> <a class="code" href="classeo_det_tournament_worth_select.html">eoDetTournamentWorthSelect&lt;eoDouble&gt;</a>(perf2worth, tournamentsize));
00166 }
00167
00168 <span class="comment">// Test pareto dominance and perf2worth, and while you're at it, test the eoGnuPlot monitor as well</span>
00169 <span class="keywordtype">void</span> the_main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* argv[])
00170 {
00171 Init init;
00172 Eval eval;
00173 Mutate mutate;
00174
00175 eoParser parser(argc, argv);
00176 <a class="code" href="classeo_state.html">eoState</a> state;
00177
00178 <span class="keywordtype">unsigned</span> num_gen = parser.createParam(<span class="keywordtype">unsigned</span>(50), <span class="stringliteral">"num_gen"</span>, <span class="stringliteral">"number of generations to run"</span>, <span class="charliteral">'g'</span>).value();
00179 <span class="keywordtype">unsigned</span> pop_size = parser.createParam(<span class="keywordtype">unsigned</span>(100), <span class="stringliteral">"pop_size"</span>, <span class="stringliteral">"population size"</span>, <span class="charliteral">'p'</span>).<a class="code" href="classeo_value_param.html#a2">value</a>();
00180 <a class="code" href="classeo_pop.html">eoPop&lt;eoDouble&gt;</a> pop(pop_size, init);
00181
00182 <span class="comment">// Look, a factory function</span>
00183 <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;eoDouble, double&gt;</a>&amp; perf2worth = make_perf2worth&lt;eoDouble&gt;(parser, state);
00184
00185 <span class="comment">// Look: another factory function, now for selection</span>
00186 <a class="code" href="classeo_select_one.html">eoSelectOne&lt;eoDouble&gt;</a>&amp; select = make_selector&lt;eoDouble&gt;(parser, state, perf2worth);
00187
00188 <span class="comment">// One general operator</span>
00189 <a class="code" href="classeo_proportional_op.html">eoProportionalOp&lt;eoDouble&gt;</a> opsel;
00190 opsel.<a class="code" href="classeo_op_container.html#a3">add</a>(mutate, 1.0);
00191
00192 <span class="comment">// the breeder</span>
00193 <a class="code" href="classeo_general_breeder.html">eoGeneralBreeder&lt;eoDouble&gt;</a> breeder(select, opsel);
00194
00195 <span class="comment">// replacement</span>
00196 <a class="code" href="classeo_n_d_plus_replacement.html">eoNDPlusReplacement&lt;eoDouble&gt;</a> replace(perf2worth);
00197
00198 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> generation = 0;
00199 <a class="code" href="classeo_gen_continue.html">eoGenContinue&lt;eoDouble&gt;</a> gen(num_gen, generation);
00200 <a class="code" href="classeo_check_point.html">eoCheckPoint&lt;eoDouble&gt;</a> cp(gen);
00201
00202 <a class="code" href="classeo_m_o_fitness_stat.html">eoMOFitnessStat&lt;eoDouble&gt;</a> fitness0(0, <span class="stringliteral">"FirstObjective"</span>);
00203 <a class="code" href="classeo_m_o_fitness_stat.html">eoMOFitnessStat&lt;eoDouble&gt;</a> fitness1(1, <span class="stringliteral">"SecondObjective"</span>);
00204
00205 cp.<a class="code" href="classeo_op_container.html#a3">add</a>(fitness0);
00206 cp.<a class="code" href="classeo_op_container.html#a3">add</a>(fitness1);
00207
00208 <a class="code" href="classeo_gnuplot1_d_snapshot.html">eoGnuplot1DSnapshot</a> snapshot(<span class="stringliteral">"pareto"</span>);
00209 <span class="comment">//snapshot.with(eoGnuplot::Points(3));</span>
00210
00211 cp.<a class="code" href="classeo_op_container.html#a3">add</a>(snapshot);
00212
00213 snapshot.<a class="code" href="classeo_op_container.html#a3">add</a>(fitness0);
00214 snapshot.<a class="code" href="classeo_op_container.html#a3">add</a>(fitness1);
00215
00216 <span class="comment">// the algo</span>
00217 <a class="code" href="classeo_easy_e_a.html">eoEasyEA&lt;eoDouble&gt;</a> ea(cp, eval, breeder, replace);
00218
00219 <span class="keywordflow">if</span> (parser.userNeedsHelp())
00220 {
00221 parser.printHelp(std::cout);
00222 <span class="keywordflow">return</span>;
00223 }
00224
00225 apply&lt;eoDouble&gt;(eval, pop);
00226 ea(pop);
00227 }
00228
00229
00230 <span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* argv[])
00231 {
00232 <span class="keywordflow">try</span>
00233 {
00234 the_main(argc, argv);
00235 }
00236 <span class="keywordflow">catch</span> (std::exception&amp; e)
00237 {
00238 std::cout &lt;&lt; <span class="stringliteral">"Exception thrown: "</span> &lt;&lt; e.what() &lt;&lt; std::endl;
00239 <span class="keywordflow">throw</span> e; <span class="comment">// make sure it does not pass the test</span>
00240 }
00241 }
00242
00243
00244
00245 <span class="comment">// Local Variables:</span>
00246 <span class="comment">// mode: C++</span>
00247 <span class="comment">// c-file-style: "Stroustrup"</span>
00248 <span class="comment">// End:</span>
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