PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // SumVarianceOfLinearTransformedBernoullis.h 00004 // 00005 // Copyright (C) 2009 Pascal Vincent 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 // Authors: Pascal Vincent 00036 00040 #ifndef SumVarianceOfLinearTransformedBernoullis_INC 00041 #define SumVarianceOfLinearTransformedBernoullis_INC 00042 00043 #include <plearn/var/BinaryVariable.h> 00044 00045 namespace PLearn { 00046 using namespace std; 00047 00060 class SumVarianceOfLinearTransformedBernoullis : public BinaryVariable 00061 { 00062 typedef BinaryVariable inherited; 00063 00064 public: 00065 //##### Public Build Options ############################################ 00066 00069 00070 public: 00071 //##### Public Member Functions ######################################### 00072 00074 SumVarianceOfLinearTransformedBernoullis(); 00075 00077 // ### Make sure the implementation in the .cc calls inherited constructor 00078 // ### and initializes all fields with reasonable default values. 00079 SumVarianceOfLinearTransformedBernoullis(Variable* input1, Variable* input2, bool call_build_ = true); 00080 00081 // ### If your class has parameters, you probably want a constructor that 00082 // ### initializes them 00083 // SumVarianceOfLinearTransformedBernoullis(Variable* input1, Variable* input2, 00084 // param_type the_parameter, ..., bool call_build_ = true); 00085 00086 // Your other public member functions go here 00087 00088 //##### PLearn::Variable methods ######################################### 00089 // (PLEASE IMPLEMENT IN .cc) 00090 virtual void recomputeSize(int& l, int& w) const; 00091 virtual void fprop(); 00092 virtual void bprop(); 00093 00094 // ### These ones are not always implemented 00095 // virtual void bbprop(); 00096 // virtual void symbolicBprop(); 00097 // virtual void rfprop(); 00098 00099 //##### PLearn::Object Protocol ######################################### 00100 00101 // Declares other standard object methods. 00102 // ### If your class is not instantiatable (it has pure virtual methods) 00103 // ### you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT 00104 PLEARN_DECLARE_OBJECT(SumVarianceOfLinearTransformedBernoullis); 00105 00106 // Simply calls inherited::build() then build_() 00107 virtual void build(); 00108 00110 // (PLEASE IMPLEMENT IN .cc) 00111 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00112 00113 protected: 00114 //##### Protected Options ############################################### 00115 00116 // ### Declare protected option fields (such as learned parameters) here 00117 // ... 00118 00119 protected: 00120 //##### Protected Member Functions ###################################### 00121 00123 // (PLEASE IMPLEMENT IN .cc) 00124 static void declareOptions(OptionList& ol); 00125 00126 private: 00127 //##### Private Member Functions ######################################## 00128 00130 // (PLEASE IMPLEMENT IN .cc) 00131 void build_(); 00132 void computeWsqnorm(); 00133 00134 private: 00135 //##### Private Data Members ############################################ 00136 00137 // temporary variables used in fprop and bprop 00138 Vec Wsqnorm; 00139 Vec Wsqnormgrad; 00140 00141 }; 00142 00143 // Declares a few other classes and functions related to this class 00144 DECLARE_OBJECT_PTR(SumVarianceOfLinearTransformedBernoullis); 00145 00146 // ### Put here a convenient method for building your variable from two 00147 // ### existing ones. 00148 // ### e.g., if your class is TotoVariable, with two parameters foo_type foo 00149 // ### and bar_type bar, you could write: 00150 // inline Var toto(Var v1, Var v2, 00151 // foo_type foo=default_foo, bar_type bar=default_bar) 00152 // { return new TotoVariable(v1, v2, foo, bar); } 00153 00154 } // end of namespace PLearn 00155 00156 #endif 00157 00158 00159 /* 00160 Local Variables: 00161 mode:c++ 00162 c-basic-offset:4 00163 c-file-style:"stroustrup" 00164 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00165 indent-tabs-mode:nil 00166 fill-column:79 00167 End: 00168 */ 00169 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :