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<h1>eoSharing.h</h1><div class="fragment"><pre class="fragment">00001
00024 <span class="comment">//-----------------------------------------------------------------------------</span>
00025
00026 <span class="preprocessor">#ifndef eoSharing_h</span>
00027 <span class="preprocessor"></span><span class="preprocessor">#define eoSharing_h</span>
00028 <span class="preprocessor"></span>
00029 <span class="preprocessor">#include &lt;eoPerf2Worth.h&gt;</span>
00030 <span class="preprocessor">#include &lt;utils/eoDistance.h&gt;</span>
00031
<a name="l00037"></a><a class="code" href="classd_matrix.html">00037</a> <span class="keyword">class </span><a class="code" href="classd_matrix.html">dMatrix</a> : <span class="keyword">public</span> std::vector&lt;double&gt;
00038 {
00039 <span class="keyword">public</span>:
00040 <span class="comment">// Ctor : sets size</span>
00041 <a class="code" href="classd_matrix.html">dMatrix</a>(<span class="keywordtype">unsigned</span> _s) : std::vector&lt;double&gt;(_s*_s), rSize(_s) {}
00042
<a name="l00044"></a><a class="code" href="classd_matrix.html#a1">00044</a> <span class="keywordtype">double</span> <a class="code" href="classd_matrix.html#a1">operator()</a>(<span class="keywordtype">unsigned</span> _i, <span class="keywordtype">unsigned</span> _j)<span class="keyword"> const</span>
00045 <span class="keyword"> </span>{
00046 <span class="keywordflow">return</span> this-&gt;operator[](_i*rSize + _j);
00047 }
00048
<a name="l00050"></a><a class="code" href="classd_matrix.html#a2">00050</a> <span class="keywordtype">double</span> &amp; <a class="code" href="classd_matrix.html#a1">operator()</a>(<span class="keywordtype">unsigned</span> _i, <span class="keywordtype">unsigned</span> _j)
00051 {
00052 <span class="keywordflow">return</span> this-&gt;operator[](_i*rSize + _j);
00053 }
00054
<a name="l00056"></a><a class="code" href="classd_matrix.html#a3">00056</a> <span class="keywordtype">void</span> <a class="code" href="classd_matrix.html#a3">printOn</a>(std::ostream &amp; _os)
00057 {
00058 <span class="keywordtype">unsigned</span> index=0;
00059 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i=0; i&lt;rSize; i++)
00060 {
00061 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j=0; j&lt;rSize; j++)
00062 _os &lt;&lt; this-&gt;operator[](index++) &lt;&lt; <span class="stringliteral">" "</span> ;
00063 _os &lt;&lt; std::endl;
00064 }
00065 _os &lt;&lt; std::endl;
00066 }
00067
00068 <span class="keyword">private</span>:
00069 <span class="keywordtype">unsigned</span> rSize; <span class="comment">// row size (== number of columns!)</span>
00070 };
00071
00072
00078 <span class="keyword">template</span> &lt;<span class="keyword">class</span> EOT&gt;
<a name="l00079"></a><a class="code" href="classeo_sharing.html">00079</a> <span class="keyword">class </span><a class="code" href="classeo_sharing.html">eoSharing</a> : <span class="keyword">public</span> <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth</a>&lt;EOT&gt;
00080 {
00081 <span class="keyword">public</span>:
00082
00083 <span class="keyword">using</span> <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT&gt;</a>::value;
00084
00085
00086 <span class="comment">/* Ctor requires a distance - cannot have a default distance! */</span>
00087 <a class="code" href="classeo_sharing.html">eoSharing</a>(<span class="keywordtype">double</span> _nicheSize, <a class="code" href="classeo_distance.html">eoDistance&lt;EOT&gt;</a> &amp; _dist) : <a class="code" href="classeo_perf2_worth.html">eoPerf2Worth&lt;EOT&gt;</a>(<span class="stringliteral">"Sharing"</span>),
00088 nicheSize(_nicheSize),
00089 dist(_dist)
00090 {}
00091
<a name="l00094"></a><a class="code" href="classeo_sharing.html#a1">00094</a> <span class="keywordtype">void</span> <a class="code" href="classeo_sharing.html#a1">operator()</a>(<span class="keyword">const</span> <a class="code" href="classeo_pop.html">eoPop&lt;EOT&gt;</a>&amp; _pop)
00095 {
00096 <span class="keywordtype">unsigned</span> i, j,
00097 pSize=_pop.size();
00098 <span class="keywordflow">if</span> (pSize &lt;= 1)
00099 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Apptempt to do sharing with population of size 1"</span>);
00100 <a class="code" href="classeo_value_param.html#a2">value</a>().resize(pSize);
00101 std::vector&lt;double&gt; sim(pSize); <span class="comment">// to hold the similarities</span>
00102 <a class="code" href="classd_matrix.html">dMatrix</a> distMatrix(pSize*(pSize-1)/2); <span class="comment">// to hold the distances</span>
00103
00104 <span class="comment">// compute the similarities (wrong name for distMatrix, I know)</span>
00105 distMatrix(0,0)=1;
00106 <span class="keywordflow">for</span> (i=1; i&lt;pSize; i++)
00107 {
00108 distMatrix(i,i)=1;
00109 <span class="keywordflow">for</span> (j=0; j&lt;i; j++)
00110 {
00111 <span class="keywordtype">double</span> d = dist(_pop[i], _pop[j]);
00112 distMatrix(i,j) =
00113 distMatrix(j,i) = ( d&gt;nicheSize ? 0 : 1-(d/nicheSize) );
00114 }
00115 }
00116
00117 <span class="keywordflow">for</span> (i=0; i&lt;pSize; i++)
00118 {
00119 <span class="keywordtype">double</span> sum=0.0;
00120 <span class="keywordflow">for</span> (j=0; j&lt;pSize; j++)
00121 sum += distMatrix(i,j);
00122 sim[i] = sum;
00123 }
00124
00125 <span class="comment">// now set the worthes values</span>
00126 <span class="keywordflow">for</span> (i = 0; i &lt; _pop.size(); ++i)
00127 <a class="code" href="classeo_value_param.html#a2">value</a>()[i]=_pop[i].fitness()/sim[i];
00128 }
00129 <span class="comment">// private data of class eoSharing</span>
00130 <span class="keyword">private</span>:
00131 <span class="keywordtype">double</span> nicheSize;
00132 <a class="code" href="classeo_distance.html">eoDistance&lt;EOT&gt;</a> &amp; dist; <span class="comment">// specific distance</span>
00133 };
00134
00135
00136
00137 <span class="preprocessor">#endif</span>
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