PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // UniformDistribution.h 00004 // 00005 // Copyright (C) 2004 Olivier Delalleau 00006 // 00007 // Redistribution and use in source and binary forms, with or without 00008 // modification, are permitted provided that the following conditions are met: 00009 // 00010 // 1. Redistributions of source code must retain the above copyright 00011 // notice, this list of conditions and the following disclaimer. 00012 // 00013 // 2. Redistributions in binary form must reproduce the above copyright 00014 // notice, this list of conditions and the following disclaimer in the 00015 // documentation and/or other materials provided with the distribution. 00016 // 00017 // 3. The name of the authors may not be used to endorse or promote 00018 // products derived from this software without specific prior written 00019 // permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 // 00032 // This file is part of the PLearn library. For more information on the PLearn 00033 // library, go to the PLearn Web site at www.plearn.org 00034 00035 /* ******************************************************* 00036 * $Id: UniformDistribution.h 5388 2006-04-13 21:28:14Z lamblin $ 00037 ******************************************************* */ 00038 00039 // Authors: Olivier Delalleau 00040 00044 #ifndef UniformDistribution_INC 00045 #define UniformDistribution_INC 00046 00047 #include "UnconditionalDistribution.h" 00048 00049 namespace PLearn { 00050 using namespace std; 00051 00052 class UniformDistribution: public UnconditionalDistribution 00053 { 00054 00055 private: 00056 00057 typedef UnconditionalDistribution inherited; 00058 00059 protected: 00060 00061 // ********************* 00062 // * protected options * 00063 // ********************* 00064 00065 mutable int counter; 00066 00067 // Fields below are not options. 00068 00069 public: 00070 00071 // ************************ 00072 // * public build options * 00073 // ************************ 00074 00075 Vec max; 00076 Vec min; 00077 int mesh_size; 00078 int n_dim; 00079 00080 // **************** 00081 // * Constructors * 00082 // **************** 00083 00085 UniformDistribution(); 00086 00087 // ************************* 00088 // * PDistribution methods * 00089 // ************************* 00090 00091 private: 00092 00094 void build_(); 00095 00096 protected: 00097 00099 static void declareOptions(OptionList& ol); 00100 00101 public: 00102 00103 // ************************ 00104 // **** Object methods **** 00105 // ************************ 00106 00108 virtual void build(); 00109 00111 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00112 00113 // Declare other standard object methods. 00114 PLEARN_DECLARE_OBJECT(UniformDistribution); 00115 00116 // ******************************* 00117 // **** PDistribution methods **** 00118 // ******************************* 00119 00121 virtual real log_density(const Vec& x) const; 00122 00124 virtual real survival_fn(const Vec& x) const; 00125 00127 virtual real cdf(const Vec& x) const; 00128 00130 virtual void expectation(Vec& mu) const; 00131 00133 virtual void variance(Mat& cov) const; 00134 00136 virtual void resetGenerator(long g_seed); 00137 00139 virtual void generate(Vec& x) const; 00140 00141 }; 00142 00143 // Declare a few other classes and functions related to this class. 00144 DECLARE_OBJECT_PTR(UniformDistribution); 00145 00146 } // end of namespace PLearn 00147 00148 #endif 00149 00150 00151 /* 00152 Local Variables: 00153 mode:c++ 00154 c-basic-offset:4 00155 c-file-style:"stroustrup" 00156 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00157 indent-tabs-mode:nil 00158 fill-column:79 00159 End: 00160 */ 00161 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :