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<h1>eoReduceSplit.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>
00002
00003 <span class="comment">//-----------------------------------------------------------------------------</span>
00004 <span class="comment">// eoReduceSplit.h</span>
00005 <span class="comment">// Base class for population-reducing classes - retaining the poor losers</span>
00006 <span class="comment">// (c) GeNeura Team, 1998, Marc Schoenauer, 2002</span>
00007 <span class="comment">/* </span>
00008 <span class="comment"> This library is free software; you can redistribute it and/or</span>
00009 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
00010 <span class="comment"> License as published by the Free Software Foundation; either</span>
00011 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
00012 <span class="comment"></span>
00013 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
00014 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
00015 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
00016 <span class="comment"> Lesser General Public License for more details.</span>
00017 <span class="comment"></span>
00018 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
00019 <span class="comment"> License along with this library; if not, write to the Free Software</span>
00020 <span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
00021 <span class="comment"></span>
00022 <span class="comment"> Contact: Marc.Schoenauer@inria.fr</span>
00023 <span class="comment"> */</span>
00024 <span class="comment">//-----------------------------------------------------------------------------</span>
00025
00026 <span class="preprocessor">#ifndef eoReduceSplit_h</span>
00027 <span class="preprocessor"></span><span class="preprocessor">#define eoReduceSplit_h</span>
00028 <span class="preprocessor"></span>
00029 <span class="comment">//-----------------------------------------------------------------------------</span>
00030
00031 <span class="preprocessor">#include &lt;iostream&gt;</span>
00032
00033 <span class="comment">// EO includes</span>
00034 <span class="preprocessor">#include &lt;eoPop.h&gt;</span> <span class="comment">// eoPop</span>
00035 <span class="preprocessor">#include &lt;eoFunctor.h&gt;</span> <span class="comment">// eoReduce</span>
00036 <span class="preprocessor">#include &lt;utils/selectors.h&gt;</span>
00037
<a name="l00042"></a><a class="code" href="classeo_reduce_split.html">00042</a> <span class="keyword">template</span>&lt;<span class="keyword">class</span> EOT&gt; <span class="keyword">class </span><a class="code" href="classeo_reduce_split.html">eoReduceSplit</a>: <span class="keyword">public</span> <a class="code" href="classeo_b_f.html">eoBF</a>&lt;eoPop&lt;EOT&gt;&amp;, eoPop&lt;EOT&gt; &amp;, void &gt;
00043 {};
00044
00046 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00047"></a><a class="code" href="classeo_truncate_split.html">00047</a> <span class="keyword">class </span><a class="code" href="classeo_truncate_split.html">eoTruncateSplit</a> : <span class="keyword">public</span> <a class="code" href="classeo_reduce_split.html">eoReduceSplit</a>&lt;EOT&gt;
00048 {
00049 <span class="keyword">public</span>:
<a name="l00053"></a><a class="code" href="classeo_truncate_split.html#a0">00053</a> <a class="code" href="classeo_truncate_split.html#a0">eoTruncateSplit</a>(<a class="code" href="classeo_how_many.html">eoHowMany</a> _howMany, <span class="keywordtype">bool</span> _returnEliminated = <span class="keyword">false</span>):
00054 howMany(_howMany), returnEliminated(_returnEliminated) {}
00055
<a name="l00057"></a><a class="code" href="classeo_truncate_split.html#a1">00057</a> <span class="keywordtype">void</span> <a class="code" href="classeo_truncate_split.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _newgen, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a> &amp; _eliminated)
00058 {
00059 <span class="keywordtype">unsigned</span> popSize = _newgen.size();
00060 <span class="keywordtype">unsigned</span> eliminated = howMany(popSize);
00061 <span class="keywordflow">if</span> (!eliminated) <span class="comment">// nothing to do</span>
00062 return ;
00063 <span class="keywordtype">unsigned</span> newsize = popSize - eliminated;
00064 <span class="keywordflow">if</span> (newsize &lt; 0)
00065 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"eoTruncateSplit: Cannot truncate to a larger size!\n"</span>);
00066
00067 _newgen.<a class="code" href="classeo_pop.html#a13">nth_element</a>(newsize);
00068
00069 <span class="comment">// save poor losers if necessary</span>
00070 <span class="keywordflow">if</span> (returnEliminated)
00071 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;eliminated; i++)
00072 _eliminated.push_back(_newgen[newsize+i]);
00073 <span class="comment">// truncate</span>
00074 _newgen.resize(newsize);
00075 return ;
00076 }
00077
00078 <span class="keyword">private</span>:
00079 <a class="code" href="classeo_how_many.html">eoHowMany</a> howMany;
00080 <span class="keywordtype">bool</span> returnEliminated;
00081 };
00082
00086 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00087"></a><a class="code" href="classeo_linear_truncate_split.html">00087</a> <span class="keyword">class </span><a class="code" href="classeo_linear_truncate_split.html">eoLinearTruncateSplit</a> : <span class="keyword">public</span> <a class="code" href="classeo_reduce_split.html">eoReduceSplit</a>&lt;EOT&gt;
00088 {
00089 <span class="keyword">public</span>:
<a name="l00093"></a><a class="code" href="classeo_linear_truncate_split.html#a0">00093</a> <a class="code" href="classeo_linear_truncate_split.html#a0">eoLinearTruncateSplit</a>(<a class="code" href="classeo_how_many.html">eoHowMany</a> _howMany, <span class="keywordtype">bool</span> _returnEliminated = <span class="keyword">false</span>):
00094 howMany(_howMany), returnEliminated(_returnEliminated) {}
00095
<a name="l00097"></a><a class="code" href="classeo_linear_truncate_split.html#a1">00097</a> <span class="keywordtype">void</span> <a class="code" href="classeo_linear_truncate_split.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _newgen, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a> &amp; _eliminated)
00098 {
00099 <span class="keywordtype">unsigned</span> popSize = _newgen.size();
00100 <span class="keywordtype">unsigned</span> eliminated = howMany(popSize);
00101 <span class="keywordflow">if</span> (!eliminated) <span class="comment">// nothing to do</span>
00102 return ;
00103 <span class="keywordtype">unsigned</span> newsize = popSize - eliminated;
00104 <span class="keywordflow">if</span> (newsize &lt; 0)
00105 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"eoLinearTruncateSplit: Cannot truncate to a larger size!\n"</span>);
00106
00107 _eliminated.reserve(_eliminated.size()+eliminated); <span class="comment">//in case not empty?</span>
00108 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;eliminated; i++)
00109 {
00110 <span class="keyword">typename</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>::iterator it = _newgen.<a class="code" href="classeo_pop.html#a12">it_worse_element</a>();
00111 <span class="keywordflow">if</span> (returnEliminated)
00112 _eliminated.push_back(*it);
00113 _newgen.erase(it);
00114 }
00115 }
00116
00117 <span class="keyword">private</span>:
00118 <a class="code" href="classeo_how_many.html">eoHowMany</a> howMany;
00119 <span class="keywordtype">bool</span> returnEliminated;
00120 };
00121
00123 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00124"></a><a class="code" href="classeo_random_split.html">00124</a> <span class="keyword">class </span><a class="code" href="classeo_random_split.html">eoRandomSplit</a> : <span class="keyword">public</span> <a class="code" href="classeo_reduce_split.html">eoReduceSplit</a>&lt;EOT&gt;
00125 {
00126 <span class="keyword">public</span>:
<a name="l00130"></a><a class="code" href="classeo_random_split.html#a0">00130</a> <a class="code" href="classeo_random_split.html#a0">eoRandomSplit</a>(<a class="code" href="classeo_how_many.html">eoHowMany</a> _howMany, <span class="keywordtype">bool</span> _returnEliminated = <span class="keyword">false</span>):
00131 howMany(_howMany), returnEliminated(_returnEliminated) {}
00132
<a name="l00134"></a><a class="code" href="classeo_random_split.html#a1">00134</a> <span class="keywordtype">void</span> <a class="code" href="classeo_random_split.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _newgen, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a> &amp; _eliminated)
00135 {
00136 <span class="keywordtype">unsigned</span> popSize = _newgen.size();
00137 <span class="keywordtype">unsigned</span> eliminated = howMany(popSize);
00138 <span class="keywordflow">if</span> (!eliminated) <span class="comment">// nothing to do</span>
00139 return ;
00140 <span class="keywordtype">unsigned</span> newsize = popSize - eliminated;
00141 <span class="keywordflow">if</span> (newsize &lt; 0)
00142 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"eoRandomSplit: Cannot truncate to a larger size!\n"</span>);
00143
00144 _newgen.<a class="code" href="classeo_pop.html#a7">shuffle</a>();
00145
00146 <span class="comment">// save poor losers if necessary</span>
00147 <span class="keywordflow">if</span> (returnEliminated)
00148 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;eliminated; i++)
00149 _eliminated.push_back(_newgen[newsize+i]);
00150 <span class="comment">// truncate</span>
00151 _newgen.resize(newsize);
00152 return ;
00153 }
00154
00155 <span class="keyword">private</span>:
00156 <a class="code" href="classeo_how_many.html">eoHowMany</a> howMany;
00157 <span class="keywordtype">bool</span> returnEliminated;
00158 };
00159
00160
00162 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00163"></a><a class="code" href="classeo_linear_random_split.html">00163</a> <span class="keyword">class </span><a class="code" href="classeo_linear_random_split.html">eoLinearRandomSplit</a> : <span class="keyword">public</span> <a class="code" href="classeo_reduce_split.html">eoReduceSplit</a>&lt;EOT&gt;
00164 {
00165 <span class="keyword">public</span>:
<a name="l00169"></a><a class="code" href="classeo_linear_random_split.html#a0">00169</a> <a class="code" href="classeo_linear_random_split.html#a0">eoLinearRandomSplit</a>(<a class="code" href="classeo_how_many.html">eoHowMany</a> _howMany, <span class="keywordtype">bool</span> _returnEliminated = <span class="keyword">false</span>):
00170 howMany(_howMany), returnEliminated(_returnEliminated) {}
00171
<a name="l00173"></a><a class="code" href="classeo_linear_random_split.html#a1">00173</a> <span class="keywordtype">void</span> <a class="code" href="classeo_linear_random_split.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _newgen, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a> &amp; _eliminated)
00174 {
00175 <span class="keywordtype">unsigned</span> popSize = _newgen.size();
00176 <span class="keywordtype">unsigned</span> eliminated = howMany(popSize);
00177 <span class="keywordflow">if</span> (!eliminated) <span class="comment">// nothing to do</span>
00178 return ;
00179 <span class="keywordtype">unsigned</span> newsize = popSize - eliminated;
00180 <span class="keywordflow">if</span> (newsize &lt; 0)
00181 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"eoLinearRandomSplit: Cannot truncate to a larger size!\n"</span>);
00182
00183 _eliminated.reserve(_eliminated.size()+eliminated); <span class="comment">//in case not empty?</span>
00184 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;eliminated; i++)
00185 {
00186 <span class="keywordtype">unsigned</span> loser=random(_newgen.size());
00187 <span class="keyword">typename</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>::iterator it = _newgen.begin()+loser;
00188 <span class="keywordflow">if</span> (returnEliminated)
00189 _eliminated.push_back(*it);
00190 _newgen.erase(it);
00191 }
00192 return ;
00193 }
00194
00195 <span class="keyword">private</span>:
00196 <a class="code" href="classeo_how_many.html">eoHowMany</a> howMany;
00197 <span class="keywordtype">bool</span> returnEliminated;
00198 };
00199
00200
00204 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00205"></a><a class="code" href="classeo_det_tournament_truncate_split.html">00205</a> <span class="keyword">class </span><a class="code" href="classeo_det_tournament_truncate_split.html">eoDetTournamentTruncateSplit</a> : <span class="keyword">public</span> <a class="code" href="classeo_reduce_split.html">eoReduceSplit</a>&lt;EOT&gt;
00206 {
00207 <span class="keyword">public</span>:
<a name="l00211"></a><a class="code" href="classeo_det_tournament_truncate_split.html#a0">00211</a> <a class="code" href="classeo_det_tournament_truncate_split.html#a0">eoDetTournamentTruncateSplit</a>(<span class="keywordtype">unsigned</span> _t_size, <a class="code" href="classeo_how_many.html">eoHowMany</a> _howMany,
00212 <span class="keywordtype">bool</span> _returnEliminated = <span class="keyword">false</span>):
00213 t_size(_t_size), howMany(_howMany),
00214 returnEliminated(_returnEliminated)
00215 {
00216 <span class="keywordflow">if</span> (t_size &lt; 2)
00217 {
00218 std::cout &lt;&lt; <span class="stringliteral">"Warning, Size for eoDetTournamentTruncateSplit adjusted to 2\n"</span>;
00219 t_size = 2;
00220 }
00221 }
00222
<a name="l00224"></a><a class="code" href="classeo_det_tournament_truncate_split.html#a1">00224</a> <span class="keywordtype">void</span> <a class="code" href="classeo_det_tournament_truncate_split.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _newgen, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a> &amp; _eliminated)
00225 <span class="comment">// BUG??? void operator()(eoPop&lt;EOT&gt;&amp; _newgen, unsigned _newsize)</span>
00226 {
00227 <span class="keywordtype">unsigned</span> popSize = _newgen.size();
00228 <span class="keywordtype">unsigned</span> eliminated = howMany(popSize);
00229 <span class="keywordflow">if</span> (!eliminated) <span class="comment">// nothing to do</span>
00230 return ;
00231 <span class="keywordtype">unsigned</span> newsize = popSize - eliminated;
00232 <span class="keywordflow">if</span> (newsize &lt; 0)
00233 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"eoDetTournamentTruncateSplit: Cannot truncate to a larger size!\n"</span>);
00234
00235
00236 _eliminated.reserve(_eliminated.size()+eliminated); <span class="comment">//in case not empty?</span>
00237 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;eliminated; i++)
00238 {
00239 <span class="keyword">typename</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>::iterator it = inverse_deterministic_tournament(_newgen.begin(), _newgen.end(), t_size);
00240 <span class="keywordflow">if</span> (returnEliminated)
00241 _eliminated.push_back(*it);
00242 _newgen.erase(it);
00243 }
00244 }
00245
00246 <span class="keyword">private</span>:
00247 <span class="keywordtype">unsigned</span> t_size;
00248 <a class="code" href="classeo_how_many.html">eoHowMany</a> howMany;
00249 <span class="keywordtype">bool</span> returnEliminated;
00250 };
00251
00255 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00256"></a><a class="code" href="classeo_stoch_tournament_truncate_split.html">00256</a> <span class="keyword">class </span><a class="code" href="classeo_stoch_tournament_truncate_split.html">eoStochTournamentTruncateSplit</a> : <span class="keyword">public</span> <a class="code" href="classeo_reduce.html">eoReduce</a>&lt;EOT&gt;
00257 {
00258 <span class="keyword">public</span>:
<a name="l00262"></a><a class="code" href="classeo_stoch_tournament_truncate_split.html#a0">00262</a> <a class="code" href="classeo_stoch_tournament_truncate_split.html#a0">eoStochTournamentTruncateSplit</a>(<span class="keywordtype">double</span> _t_rate, <a class="code" href="classeo_how_many.html">eoHowMany</a> _howMany,
00263 <span class="keywordtype">bool</span> _returnEliminated = <span class="keyword">false</span>):
00264 t_rate(_t_rate), howMany(_howMany),
00265 returnEliminated(_returnEliminated)
00266 {
00267 <span class="keywordflow">if</span> (t_rate &lt;= 0.5)
00268 {
00269 std::cout &lt;&lt; <span class="stringliteral">"Warning, Rate for eoStochTournamentTruncateSplit adjusted to 0.51\n"</span>;
00270 t_rate = 0.51;
00271 }
00272 <span class="keywordflow">if</span> (t_rate &gt; 1)
00273 {
00274 std::cout &lt;&lt; <span class="stringliteral">"Warning, Rate for eoStochTournamentTruncateSplit adjusted to 1\n"</span>;
00275 t_rate = 1;
00276 }
00277 }
00278
<a name="l00280"></a><a class="code" href="classeo_stoch_tournament_truncate_split.html#a1">00280</a> <span class="keywordtype">void</span> <a class="code" href="classeo_stoch_tournament_truncate_split.html#a1">operator()</a>(<a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _newgen, <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a> &amp; _eliminated)
00281 <span class="comment">//BUG??? void operator()(eoPop&lt;EOT&gt;&amp; _newgen, unsigned _newsize)</span>
00282 {
00283 <span class="comment">/* old version</span>
00284 <span class="comment"> if (!_eliminated.size()) // nothing to do</span>
00285 <span class="comment"> return;</span>
00286 <span class="comment"> unsigned oldSize = _newgen.size();</span>
00287 <span class="comment"> unsigned newSize = oldSize - _eliminated.size();</span>
00288 <span class="comment"> unsigned eliminated = howMany(popSize);</span>
00289 <span class="comment"> if (newSize &lt; 0)</span>
00290 <span class="comment"> throw std::logic_error("eoStochTournamentTruncateSplit: Cannot truncate to a larger size!\n");</span>
00291 <span class="comment"></span>
00292 <span class="comment">end of old version */</span>
00293
00294 <span class="keywordtype">unsigned</span> popSize = _newgen.size();
00295 <span class="keywordtype">unsigned</span> eliminated = howMany(popSize);
00296 <span class="keywordflow">if</span> (!eliminated) <span class="comment">// nothing to do</span>
00297 return ;
00298 <span class="keywordtype">unsigned</span> newsize = popSize - eliminated;
00299 <span class="keywordflow">if</span> (newsize &lt; 0)
00300 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"eoDetTournamentTruncateSplit: Cannot truncate to a larger size!\n"</span>);
00301
00302
00303
00304 _eliminated.reserve(_eliminated.size()+eliminated); <span class="comment">//in case not empty?</span>
00305 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;_eliminated.size(); i++)
00306 {
00307 <span class="keyword">typename</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>::iterator it = inverse_stochastic_tournament(_newgen.begin(), _newgen.end(), t_rate);
00308 <span class="keywordflow">if</span> (returnEliminated)
00309 _eliminated.push_back(*it);
00310 _newgen.erase(it);
00311 }
00312 }
00313
00314
00315 <span class="keyword">private</span>:
00316 <span class="keywordtype">double</span> t_rate;
00317 <a class="code" href="classeo_how_many.html">eoHowMany</a> howMany;
00318 <span class="keywordtype">bool</span> returnEliminated;
00319 };
00320
00321 <span class="comment">//-----------------------------------------------------------------------------</span>
00322
00323 <span class="preprocessor">#endif</span>
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