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<h1>eoDistance.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">// eoDistance.h</span>
00005 <span class="comment">// (c) GeNeura Team, 1998, Marc Schoenauer 2001</span>
00006 <span class="comment">/* </span>
00007 <span class="comment"> This library is free software; you can redistribute it and/or</span>
00008 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
00009 <span class="comment"> License as published by the Free Software Foundation; either</span>
00010 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
00011 <span class="comment"></span>
00012 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
00013 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
00014 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
00015 <span class="comment"> Lesser General Public License for more details.</span>
00016 <span class="comment"></span>
00017 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
00018 <span class="comment"> License along with this library; if not, write to the Free Software</span>
00019 <span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
00020 <span class="comment"></span>
00021 <span class="comment"> Contact: todos@geneura.ugr.es, http://geneura.ugr.es</span>
00022 <span class="comment"> Marc.Schoenauer@polytechnique.fr</span>
00023 <span class="comment"> */</span>
00024 <span class="comment">//-----------------------------------------------------------------------------</span>
00025
00026 <span class="preprocessor">#ifndef _eoDistance_H</span>
00027 <span class="preprocessor"></span><span class="preprocessor">#define _eoDistance_H</span>
00028 <span class="preprocessor"></span>
00029 <span class="preprocessor">#include &lt;eoFunctor.h&gt;</span>
00034 <span class="keyword">template</span>&lt; <span class="keyword">class</span> EOT &gt;
<a name="l00035"></a><a class="code" href="classeo_distance.html">00035</a> <span class="keyword">class </span><a class="code" href="classeo_distance.html">eoDistance</a> : <span class="keyword">public</span> <a class="code" href="classeo_b_f.html">eoBF</a>&lt;const EOT &amp;, const EOT &amp;, double&gt;
00036 {};
00037
00038
00043 <span class="keyword">template</span>&lt; <span class="keyword">class</span> EOT &gt;
<a name="l00044"></a><a class="code" href="classeo_quad_distance.html">00044</a> <span class="keyword">class </span><a class="code" href="classeo_quad_distance.html">eoQuadDistance</a> : <span class="keyword">public</span> <a class="code" href="classeo_distance.html">eoDistance</a>&lt;EOT&gt;
00045 {
00046 <span class="keyword">public</span>:
<a name="l00047"></a><a class="code" href="classeo_quad_distance.html#a0">00047</a> <span class="keywordtype">double</span> <a class="code" href="classeo_quad_distance.html#a0">operator()</a>(<span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> &amp; _v1, <span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> &amp; _v2)
00048 {
00049 <span class="keywordtype">double</span> sum=0.0;
00050 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;_v1.size(); i++)
00051 {
00052 <span class="keywordtype">double</span> r = static_cast&lt;double&gt; (_v1[i]) - static_cast&lt;double&gt; (_v2[i]);
00053 sum += r*r;
00054 }
00055 <span class="keywordflow">return</span> sqrt(sum);
00056 }
00057 };
00058
00065 <span class="keyword">template</span>&lt; <span class="keyword">class</span> EOT &gt;
<a name="l00066"></a><a class="code" href="classeo_hamming_distance.html">00066</a> <span class="keyword">class </span><a class="code" href="classeo_hamming_distance.html">eoHammingDistance</a> : <span class="keyword">public</span> <a class="code" href="classeo_distance.html">eoDistance</a>&lt;EOT&gt;
00067 {
00068 <span class="keyword">public</span>:
<a name="l00069"></a><a class="code" href="classeo_hamming_distance.html#a0">00069</a> <span class="keywordtype">double</span> <a class="code" href="classeo_hamming_distance.html#a0">operator()</a>(<span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> &amp; _v1, <span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> &amp; _v2)
00070 {
00071 <span class="keywordtype">double</span> sum=0.0;
00072 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;_v1.size(); i++)
00073 {
00074 <span class="keywordtype">double</span> r = static_cast&lt;double&gt; (_v1[i]) - static_cast&lt;double&gt; (_v2[i]);
00075 sum += fabs(r);
00076 }
00077 <span class="keywordflow">return</span> sum;
00078 }
00079 };
00080
00081 <span class="comment">/* this distance measures the difference in fitness </span>
00082 <span class="comment"> * I am not sure it can be of any use, though ... </span>
00083 <span class="comment"> * except for some testing</span>
00084 <span class="comment"> */</span>
00085 <span class="keyword">template</span>&lt; <span class="keyword">class</span> EOT &gt;
00086 <span class="keyword">class </span>eoFitnessDistance : <span class="keyword">public</span> <a class="code" href="classeo_distance.html">eoDistance</a>&lt;EOT&gt;
00087 {
00088 <span class="keyword">public</span>:
00089 <span class="keywordtype">double</span> <a class="code" href="classeo_b_f.html#a1">operator()</a>(<span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> &amp; _v1, <span class="keyword">const</span> <a class="code" href="struct_dummy.html">EOT</a> &amp; _v2)
00090 {
00091 <span class="keywordtype">double</span> d = _v1.<a class="code" href="class_e_o.html#a2">fitness</a>() - _v2.<a class="code" href="class_e_o.html#a2">fitness</a>();
00092 <span class="keywordflow">return</span> sqrt(d*d);
00093 }
00094 };
00095
00096
00097
00098 <span class="preprocessor">#endif</span>
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