Fast SAT Solver (C++, GAlib)
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<h1>GaSatSolver.cpp</h1><a href="GaSatSolver_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2008 Kamil Dudka <xdudka00@stud.fit.vutbr.cz></span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This file is part of fss (Fast SAT Solver).</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * fss is free software: you can redistribute it and/or modify</span>
<a name="l00007"></a>00007 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00008"></a>00008 <span class="comment"> * the Free Software Foundation, either version 3 of the License, or</span>
<a name="l00009"></a>00009 <span class="comment"> * any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * fss is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00014"></a>00014 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> * along with fss. If not, see <http://www.gnu.org/licenses/>.</span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include <ga/GA1DBinStrGenome.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#include <ga/GASimpleGA.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <ga/GAStatistics.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="fssIO_8h.html" title="I/O module.">fssIO.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="SatProblem_8h.html" title="SAT Problem representation.">SatProblem.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="GaSatSolver_8h.html" title="GaSatSolver class using GAlib library to solve SAT problem.">GaSatSolver.h</a>"</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="comment">//#include <ga/GASStateGA.h></span>
<a name="l00029"></a>00029 <span class="comment">//#include <ga/GAIncGA.h></span>
<a name="l00030"></a>00030 <span class="comment">//#include <ga/GADemeGA.h></span>
<a name="l00031"></a>00031
<a name="l00032"></a><a class="code" href="GaSatSolver_8cpp.html#9795659bc91c151a3ed460dfdb658e74">00032</a> <span class="keyword">typedef</span> GASimpleGA <a class="code" href="GaSatSolver_8cpp.html#9795659bc91c151a3ed460dfdb658e74">TGeneticAlgorithm</a>;
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">namespace </span>FastSatSolver {
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////</span>
<a name="l00037"></a>00037 <span class="comment">// GaSatItem implementation</span>
<a name="l00038"></a><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html">00038</a> <span class="keyword">struct </span><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html">GaSatItem::Private</a> {
<a name="l00039"></a><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">00039</a> GABinaryString <a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">bs</a>;
<a name="l00040"></a>00040
<a name="l00041"></a><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#944f97fa8f0810643691dfdfc9f810e0">00041</a> <a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#944f97fa8f0810643691dfdfc9f810e0">Private</a>(<span class="keywordtype">unsigned</span> size): <a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">bs</a>(size) { }
<a name="l00042"></a>00042 };
<a name="l00043"></a><a class="code" href="classFastSatSolver_1_1GaSatItem.html#9a7f9bea9f7f2870c44d1692b989881e">00043</a> <a class="code" href="classFastSatSolver_1_1GaSatItem.html#9a7f9bea9f7f2870c44d1692b989881e">GaSatItem::GaSatItem</a>(<span class="keyword">const</span> GABinaryString &bs):
<a name="l00044"></a>00044 d(new <a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html">Private</a>(bs.size()))
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 d-><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">bs</a>.copy(bs);
<a name="l00047"></a>00047 }
<a name="l00048"></a><a class="code" href="classFastSatSolver_1_1GaSatItem.html#1ab756a0f3ce624a1d1c0f45cd9b4dde">00048</a> GaSatItem::~GaSatItem() {
<a name="l00049"></a>00049 <span class="keyword">delete</span> d;
<a name="l00050"></a>00050 }
<a name="l00051"></a><a class="code" href="classFastSatSolver_1_1GaSatItem.html#f59b115e86eaeac1f15673766852e428">00051</a> <span class="keywordtype">int</span> <a class="code" href="classFastSatSolver_1_1GaSatItem.html#f59b115e86eaeac1f15673766852e428" title="Returns count of bits (resp. variables) managed by object.">GaSatItem::getLength</a>()<span class="keyword"> const </span>{
<a name="l00052"></a>00052 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">bs</a>.size();
<a name="l00053"></a>00053 }
<a name="l00054"></a><a class="code" href="classFastSatSolver_1_1GaSatItem.html#02914b181415dd30b58db5408487a8e1">00054</a> <span class="keywordtype">bool</span> <a class="code" href="classFastSatSolver_1_1GaSatItem.html#02914b181415dd30b58db5408487a8e1" title="Returns value of desired bit (resp. variable).">GaSatItem::getBit</a>(<span class="keywordtype">int</span> index)<span class="keyword"> const </span>{
<a name="l00055"></a>00055 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">bs</a>.bit(index);
<a name="l00056"></a>00056 }
<a name="l00057"></a><a class="code" href="classFastSatSolver_1_1GaSatItem.html#be193dccd5bf6292787bda695498aace">00057</a> <a class="code" href="classFastSatSolver_1_1GaSatItem.html" title="ISatItem implementation used by GaSatSolver.">GaSatItem</a>* <a class="code" href="classFastSatSolver_1_1GaSatItem.html#be193dccd5bf6292787bda695498aace" title="Returns clone of object&#39;s instance.">GaSatItem::clone</a>()<span class="keyword"> const </span>{
<a name="l00058"></a>00058 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classFastSatSolver_1_1GaSatItem.html#9a7f9bea9f7f2870c44d1692b989881e">GaSatItem</a>(d-><a class="code" href="structFastSatSolver_1_1GaSatItem_1_1Private.html#05a5ce6bfc46e3e304f1df2217f59690">bs</a>);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="comment">// ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////</span>
<a name="l00062"></a>00062 <span class="comment">// SatItemGalibAdatper implementation</span>
<a name="l00063"></a><a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#a16fa6f95b23e204bc8bd49a268e00f3">00063</a> <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#a16fa6f95b23e204bc8bd49a268e00f3">SatItemGalibAdatper::SatItemGalibAdatper</a>(<span class="keyword">const</span> GABinaryString &bs):
<a name="l00064"></a>00064 bs_(bs)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 }
<a name="l00067"></a><a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#b3dfe49bcf358268bd5b67def3472e64">00067</a> <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#b3dfe49bcf358268bd5b67def3472e64">SatItemGalibAdatper::~SatItemGalibAdatper</a>() { }
<a name="l00068"></a><a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#f59b115e86eaeac1f15673766852e428">00068</a> <span class="keywordtype">int</span> <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#f59b115e86eaeac1f15673766852e428" title="Returns count of bits (resp. variables) managed by object.">SatItemGalibAdatper::getLength</a>()<span class="keyword"> const </span>{
<a name="l00069"></a>00069 <span class="keywordflow">return</span> bs_.size();
<a name="l00070"></a>00070 }
<a name="l00071"></a><a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#02914b181415dd30b58db5408487a8e1">00071</a> <span class="keywordtype">bool</span> <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#02914b181415dd30b58db5408487a8e1" title="Returns value of desired bit (resp. variable).">SatItemGalibAdatper::getBit</a>(<span class="keywordtype">int</span> index)<span class="keyword"> const </span>{
<a name="l00072"></a>00072 <span class="keywordflow">return</span> bs_.bit(index);
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 <span class="comment">// FIXME: There is no deep copy (optimalization)</span>
<a name="l00075"></a><a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#63bba39b2b1ae2152c70546532ffccc6">00075</a> <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html" title="Leightweight, optimized ISatItem implementation used by GaSatSolver time-critical...">SatItemGalibAdatper</a>* <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#63bba39b2b1ae2152c70546532ffccc6" title="Returns clone of object&#39;s instance.">SatItemGalibAdatper::clone</a>()<span class="keyword"> const </span>{
<a name="l00076"></a>00076 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html#a16fa6f95b23e204bc8bd49a268e00f3">SatItemGalibAdatper</a>(bs_);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////</span>
<a name="l00080"></a>00080 <span class="comment">// GaSatSolver implementation</span>
<a name="l00081"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html">00081</a> <span class="keyword">struct </span><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html">GaSatSolver::Private</a> {
<a name="l00082"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#74a878161cb263331f8413b1502a482a">00082</a> <a class="code" href="classFastSatSolver_1_1SatProblem.html" title="SAT Problem module&#39;s facade.">SatProblem</a> *problem;
<a name="l00083"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#a7592b04ea348c57b37a117ba1f9ffc2">00083</a> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html" title="Solver using GAlib library to solve SAT problem.">GaSatSolver</a> *solver;
<a name="l00084"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#c1dfa1e4f4ce3522765951e4bb1c8902">00084</a> <span class="keywordtype">float</span> maxFitness;
<a name="l00085"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#2ff18683899bb37f7be06cddde88b13d">00085</a> GA1DBinaryStringGenome *genome;
<a name="l00086"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">00086</a> <a class="code" href="GaSatSolver_8cpp.html#9795659bc91c151a3ed460dfdb658e74">TGeneticAlgorithm</a> *ga;
<a name="l00087"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">00087</a> <a class="code" href="classFastSatSolver_1_1SatItemSet.html" title="Associative array for ISatItem objects.">SatItemSet</a> *resultSet;
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keyword">static</span> <span class="keywordtype">float</span> fitness(GAGenome &);
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091 <span class="comment">// protected</span>
<a name="l00092"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#5800d77805ee60252d59d43e4a786cdc">00092</a> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#5800d77805ee60252d59d43e4a786cdc" title="Non-public constructor. Use static method create() instead.">GaSatSolver::GaSatSolver</a> (<a class="code" href="classFastSatSolver_1_1SatProblem.html" title="SAT Problem module&#39;s facade.">SatProblem</a> *problem, <span class="keyword">const</span> GAParameterList &params):
<a name="l00093"></a>00093 d(new <a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html">Private</a>)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#74a878161cb263331f8413b1502a482a">problem</a> = problem;
<a name="l00096"></a>00096 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#a7592b04ea348c57b37a117ba1f9ffc2">solver</a> = <span class="keyword">this</span>;
<a name="l00097"></a>00097 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#c1dfa1e4f4ce3522765951e4bb1c8902">maxFitness</a> = 0.0;
<a name="l00098"></a>00098 <span class="keyword">const</span> <span class="keywordtype">int</span> varsCount = problem-><a class="code" href="classFastSatSolver_1_1SatProblem.html#92e7e3731c3c44467cadeb9038dd4cb9" title="Returns total count of variables managed by SatProblem.">getVarsCount</a>();
<a name="l00099"></a>00099 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#2ff18683899bb37f7be06cddde88b13d">genome</a> = <span class="keyword">new</span> GA1DBinaryStringGenome(varsCount, <a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#69c383de18f3cd26911dff4a44bd5417">Private::fitness</a>, d);
<a name="l00100"></a>00100 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a> = <span class="keyword">new</span> <a class="code" href="GaSatSolver_8cpp.html#9795659bc91c151a3ed460dfdb658e74">TGeneticAlgorithm</a>(*(d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#2ff18683899bb37f7be06cddde88b13d">genome</a>));
<a name="l00101"></a>00101 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>->parameters(params);
<a name="l00102"></a>00102 <span class="keywordtype">bool</span> termUponConvergence = <span class="keyword">false</span>;
<a name="l00103"></a>00103 params.get(<span class="stringliteral">"term_upon_convergence"</span>, &termUponConvergence);
<a name="l00104"></a>00104 <span class="keywordflow">if</span> (termUponConvergence)
<a name="l00105"></a>00105 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>->terminator(GAGeneticAlgorithm::TerminateUponConvergence);
<a name="l00106"></a>00106 <span class="comment">//d->ga->terminator(GAGeneticAlgorithm::TerminateUponPopConvergence);</span>
<a name="l00107"></a>00107 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">resultSet</a> = <span class="keyword">new</span> <a class="code" href="classFastSatSolver_1_1SatItemSet.html" title="Associative array for ISatItem objects.">SatItemSet</a>;
<a name="l00108"></a>00108 }
<a name="l00109"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#85731baa47549065bff3846628f55e0f">00109</a> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#85731baa47549065bff3846628f55e0f">GaSatSolver::~GaSatSolver</a>() {
<a name="l00110"></a>00110 <span class="keyword">delete</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">resultSet</a>;
<a name="l00111"></a>00111 <span class="keyword">delete</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>;
<a name="l00112"></a>00112 <span class="keyword">delete</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#2ff18683899bb37f7be06cddde88b13d">genome</a>;
<a name="l00113"></a>00113 <span class="keyword">delete</span> d;
<a name="l00114"></a>00114 }
<a name="l00115"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#c162276cd1a753ecbba6e64f367fef60">00115</a> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html" title="Solver using GAlib library to solve SAT problem.">GaSatSolver</a>* <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#c162276cd1a753ecbba6e64f367fef60" title="Simple factory method.">GaSatSolver::create</a> (<a class="code" href="classFastSatSolver_1_1SatProblem.html" title="SAT Problem module&#39;s facade.">SatProblem</a> *problem, <span class="keyword">const</span> GAParameterList &params) {
<a name="l00116"></a>00116 <a class="code" href="classFastSatSolver_1_1GaSatSolver.html" title="Solver using GAlib library to solve SAT problem.">GaSatSolver</a> *obj = <span class="keyword">new</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#5800d77805ee60252d59d43e4a786cdc" title="Non-public constructor. Use static method create() instead.">GaSatSolver</a>(problem, params);
<a name="l00117"></a>00117 obj-><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#25a40b6614565f755233080a384c35f1" title="Initialize process.">initialize</a>();
<a name="l00118"></a>00118 <span class="keywordflow">return</span> obj;
<a name="l00119"></a>00119 }
<a name="l00120"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#dfe44037a7f3a1f48e063707acca8c5e">00120</a> <span class="keywordtype">void</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#dfe44037a7f3a1f48e063707acca8c5e" title="Extends GAParameterList with GA-specific parameters.">GaSatSolver::registerDefaultParameters</a>(GAParameterList &params) {
<a name="l00121"></a>00121 TGeneticAlgorithm::registerDefaultParameters(params);
<a name="l00122"></a>00122 <span class="keyword">const</span> <span class="keywordtype">bool</span> FALSE = <span class="keyword">false</span>;
<a name="l00123"></a>00123 params.add(<span class="stringliteral">"term_upon_convergence"</span>, <span class="stringliteral">"convterm"</span>, GAParameter::BOOLEAN, &FALSE);
<a name="l00124"></a>00124 }
<a name="l00125"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#0f8b9a0b5b88a1091aee75779d1b7cb7">00125</a> <a class="code" href="classFastSatSolver_1_1SatProblem.html" title="SAT Problem module&#39;s facade.">SatProblem</a>* <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#0f8b9a0b5b88a1091aee75779d1b7cb7" title="Returns pointer to instance of SatProblem used by solver.">GaSatSolver::getProblem</a>() {
<a name="l00126"></a>00126 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#74a878161cb263331f8413b1502a482a">problem</a>;
<a name="l00127"></a>00127 }
<a name="l00128"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#a7b4044638ce63985c719e6f456a8ea5">00128</a> <span class="keyword">const</span> GAStatistics& <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#a7b4044638ce63985c719e6f456a8ea5" title="Returns useful statistic data managed by GAStatistics class.">GaSatSolver::getStatistics</a>()<span class="keyword"> const </span>{
<a name="l00129"></a>00129 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>->statistics();
<a name="l00130"></a>00130 }
<a name="l00131"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#7b0abc45218a7539d5c842d0d23d1c2e">00131</a> <span class="keywordtype">int</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#7b0abc45218a7539d5c842d0d23d1c2e" title="Returns current count solutions founded by solver.">GaSatSolver::getSolutionsCount</a>() {
<a name="l00132"></a>00132 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">resultSet</a>-><a class="code" href="classFastSatSolver_1_1SatItemSet.html#ab0d4bbd0884d04dbe281cc2b9d21206" title="Returns count of item managed by container.">getLength</a>();
<a name="l00133"></a>00133 }
<a name="l00134"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#afe4f04b889ee848eb52271ea1f4f9ef">00134</a> <a class="code" href="classFastSatSolver_1_1SatItemVector.html" title="Linear storage container for ISatItem objects.">SatItemVector</a>* <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#afe4f04b889ee848eb52271ea1f4f9ef" title="Returns a set of solutions founded by solver.">GaSatSolver::getSolutionVector</a>() {
<a name="l00135"></a>00135 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">resultSet</a>-><a class="code" href="classFastSatSolver_1_1SatItemSet.html#1ec6a07165be87a359b04ee833c0a283" title="Export container&#39;s content to SatItemVector.">createVector</a>();
<a name="l00136"></a>00136 }
<a name="l00137"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#3e12cbdb3e43385dc45fc10f703af769">00137</a> <span class="keywordtype">float</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#3e12cbdb3e43385dc45fc10f703af769" title="Returns fitness of the Worst solution managed by solver.">GaSatSolver::minFitness</a>() {
<a name="l00138"></a>00138 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>->statistics().offlineMin();
<a name="l00139"></a>00139 }
<a name="l00140"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#c38f955a6e6a313249883aa555ab36b6">00140</a> <span class="keywordtype">float</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#c38f955a6e6a313249883aa555ab36b6" title="Returns average fitness computed by solver.">GaSatSolver::avgFitness</a>() {
<a name="l00141"></a>00141 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>->statistics().offlineMax();
<a name="l00142"></a>00142 }
<a name="l00143"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#a4ff4f00ef1022a70f538e32d7a2e07b">00143</a> <span class="keywordtype">float</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#a4ff4f00ef1022a70f538e32d7a2e07b" title="Returns the Best fitness founded by solver.">GaSatSolver::maxFitness</a>() {
<a name="l00144"></a>00144 <span class="keywordflow">return</span> d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#c1dfa1e4f4ce3522765951e4bb1c8902">maxFitness</a>;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 <span class="comment">// protected</span>
<a name="l00147"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#25a40b6614565f755233080a384c35f1">00147</a> <span class="keywordtype">void</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#25a40b6614565f755233080a384c35f1" title="Initialize process.">GaSatSolver::initialize</a>() {
<a name="l00148"></a>00148 GARandomSeed();
<a name="l00149"></a>00149 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#c1dfa1e4f4ce3522765951e4bb1c8902">maxFitness</a> = 0.0;
<a name="l00150"></a>00150 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>->initialize();
<a name="l00151"></a>00151 <span class="comment">// Now using incremental strategy</span>
<a name="l00152"></a>00152 <span class="comment">// d->resultSet->clear();</span>
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="comment">// protected</span>
<a name="l00155"></a><a class="code" href="classFastSatSolver_1_1GaSatSolver.html#931514cf013abbc0b9511a44c1f7fe48">00155</a> <span class="keywordtype">void</span> <a class="code" href="classFastSatSolver_1_1GaSatSolver.html#931514cf013abbc0b9511a44c1f7fe48" title="Do one step of process.">GaSatSolver::doStep</a>() {
<a name="l00156"></a>00156 GAGeneticAlgorithm &ga= *(d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#089431747ac13c76d93b4687eab6e0a4">ga</a>);
<a name="l00157"></a>00157 ga.step();
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (ga.done()) {
<a name="l00159"></a>00159 this-><a class="code" href="classFastSatSolver_1_1AbstractProcessWatched.html#8c528baf37154d347366083f0f816846" title="Stop currently executed process as soon as possible.">stop</a>();
<a name="l00160"></a>00160 <span class="preprocessor">#if 0//ndef NDEBUG</span>
<a name="l00161"></a>00161 <span class="preprocessor"></span> std::cerr << <span class="stringliteral">">>> Stopped by GAlib terminator"</span> << std::endl;
<a name="l00162"></a>00162 <span class="preprocessor">#endif // NDEBUG</span>
<a name="l00163"></a>00163 <span class="preprocessor"></span> }
<a name="l00164"></a>00164 }
<a name="l00165"></a><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#69c383de18f3cd26911dff4a44bd5417">00165</a> <span class="keywordtype">float</span> <a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#69c383de18f3cd26911dff4a44bd5417">GaSatSolver::Private::fitness</a>(GAGenome &genome) {
<a name="l00166"></a>00166 <span class="comment">// Static to non-static binding</span>
<a name="l00167"></a>00167 <a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html">Private</a> *d = <span class="keyword">reinterpret_cast<</span><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html">Private</a> *<span class="keyword">></span>(genome.userData());
<a name="l00168"></a>00168 <a class="code" href="classFastSatSolver_1_1SatProblem.html" title="SAT Problem module&#39;s facade.">SatProblem</a> *<a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#74a878161cb263331f8413b1502a482a">problem</a> = <span class="keyword">dynamic_cast<</span><a class="code" href="classFastSatSolver_1_1SatProblem.html" title="SAT Problem module&#39;s facade.">SatProblem</a> *<span class="keyword">></span>(d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#74a878161cb263331f8413b1502a482a">problem</a>);
<a name="l00169"></a>00169 <a class="code" href="classFastSatSolver_1_1GaSatSolver.html" title="Solver using GAlib library to solve SAT problem.">GaSatSolver</a> *<a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#a7592b04ea348c57b37a117ba1f9ffc2">solver</a> = <span class="keyword">dynamic_cast<</span><a class="code" href="classFastSatSolver_1_1GaSatSolver.html" title="Solver using GAlib library to solve SAT problem.">GaSatSolver</a> *<span class="keyword">></span>(d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#a7592b04ea348c57b37a117ba1f9ffc2">solver</a>);
<a name="l00170"></a>00170 <span class="keyword">const</span> GABinaryString &bs= <span class="keyword">dynamic_cast<</span>GABinaryString &<span class="keyword">></span>(genome);
<a name="l00171"></a>00171 <a class="code" href="classFastSatSolver_1_1SatItemSet.html" title="Associative array for ISatItem objects.">SatItemSet</a> *<a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">resultSet</a>= <span class="keyword">dynamic_cast<</span><a class="code" href="classFastSatSolver_1_1SatItemSet.html" title="Associative array for ISatItem objects.">SatItemSet</a> *<span class="keyword">></span>(d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#7489b689bcc371cb84451df846096df1">resultSet</a>);
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="comment">// Compute fitness</span>
<a name="l00174"></a>00174 <a class="code" href="classFastSatSolver_1_1SatItemGalibAdatper.html" title="Leightweight, optimized ISatItem implementation used by GaSatSolver time-critical...">SatItemGalibAdatper</a> data(bs);
<a name="l00175"></a>00175 <span class="keyword">const</span> <span class="keywordtype">int</span> formulasCount = problem-><a class="code" href="classFastSatSolver_1_1SatProblem.html#fa9215848a08453610b67d1eb882c641" title="Returns total count of formulas managed by SatProblem.">getFormulasCount</a>();
<a name="l00176"></a>00176 <span class="keyword">const</span> <span class="keywordtype">int</span> satsCount = problem-><a class="code" href="classFastSatSolver_1_1SatProblem.html#3c6475887daf5925eadbc98109b8a3dc" title="Evaluate all formulas in container using given data and return satisfaction ratio...">getSatsCount</a>(&data);
<a name="l00177"></a>00177 <span class="keywordtype">float</span> <a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#69c383de18f3cd26911dff4a44bd5417">fitness</a> = <span class="keyword">static_cast<</span><span class="keywordtype">float</span><span class="keyword">></span>(satsCount)/formulasCount;
<a name="l00178"></a>00178 <span class="keywordflow">if</span> (fitness > d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#c1dfa1e4f4ce3522765951e4bb1c8902">maxFitness</a>) {
<a name="l00179"></a>00179 d-><a class="code" href="structFastSatSolver_1_1GaSatSolver_1_1Private.html#c1dfa1e4f4ce3522765951e4bb1c8902">maxFitness</a> = fitness;
<a name="l00180"></a>00180 solver-><a class="code" href="classFastSatSolver_1_1AbstractSubject.html#7ff19734eb024bd6f3e2ad95647b1b27" title="Send notification to all observers (listeners).">notify</a>();
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (formulasCount==satsCount) {
<a name="l00184"></a>00184 resultSet-><a class="code" href="classFastSatSolver_1_1SatItemSet.html#e50e61bb65bb3328f6afbd8e005cb96f" title="Add item to container, if it hasn&#39;t been there before.">addItem</a>(<span class="keyword">new</span> <a class="code" href="classFastSatSolver_1_1GaSatItem.html" title="ISatItem implementation used by GaSatSolver.">GaSatItem</a>(bs));
<a name="l00185"></a>00185 solver-><a class="code" href="classFastSatSolver_1_1AbstractSubject.html#7ff19734eb024bd6f3e2ad95647b1b27" title="Send notification to all observers (listeners).">notify</a>();
<a name="l00186"></a>00186 };
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="comment">// TODO: scale fitness?</span>
<a name="l00189"></a>00189 <span class="keywordflow">return</span> fitness;
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191
<a name="l00192"></a>00192
<a name="l00193"></a>00193 } <span class="comment">// namespace FastSatSolver</span>
<a name="l00194"></a>00194
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