PLearn 0.1
UniformDistribution.h
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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 :
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