PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // ToBagClassifier.h 00004 // 00005 // Copyright (C) 2007 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 // Authors: Olivier Delalleau 00036 00040 #ifndef ToBagClassifier_INC 00041 #define ToBagClassifier_INC 00042 00043 #include <plearn_learners/generic/EmbeddedLearner.h> 00044 00045 namespace PLearn { 00046 00057 class ToBagClassifier : public EmbeddedLearner 00058 { 00059 typedef EmbeddedLearner inherited; 00060 00061 public: 00062 //##### Public Build Options ############################################ 00063 00064 int n_classes; 00065 00066 public: 00067 //##### Public Member Functions ######################################### 00068 00070 // ### Make sure the implementation in the .cc 00071 // ### initializes all fields to reasonable default values. 00072 ToBagClassifier(); 00073 00074 //##### PLearner Member Functions ####################################### 00075 00077 virtual void setTrainingSet(VMat training_set, bool call_forget=true); 00078 00080 virtual int targetsize() const; 00081 00083 virtual void computeCostsFromOutputs(const Vec& input, const Vec& output, 00084 const Vec& target, Vec& costs) const; 00085 00087 virtual void computeOutputAndCosts(const Vec& input, const Vec& target, 00088 Vec& output, Vec& costs) const; 00089 00091 virtual void computeOutputsAndCosts(const Mat& input, const Mat& target, 00092 Mat& output, Mat& costs) const 00093 { 00094 PLearner::computeOutputsAndCosts(input, target, output, costs); 00095 } 00096 00098 virtual TVec<string> getTestCostNames() const; 00099 00100 //##### PLearn::Object Protocol ######################################### 00101 00102 // Declares other standard object methods. 00103 // ### If your class is not instantiatable (it has pure virtual methods) 00104 // ### you should replace this by PLEARN_DECLARE_ABSTRACT_OBJECT_METHODS 00105 PLEARN_DECLARE_OBJECT(ToBagClassifier); 00106 00107 // Simply calls inherited::build() then build_() 00108 virtual void build(); 00109 00111 // (PLEASE IMPLEMENT IN .cc) 00112 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00113 00114 protected: 00115 00117 mutable Vec sub_target; 00118 00120 mutable Mat bag_output; 00121 00123 mutable Vec votes; 00124 00125 //##### Protected Options ############################################### 00126 00127 // ### Declare protected option fields (such as learned parameters) here 00128 // ... 00129 00130 protected: 00131 //##### Protected Member Functions ###################################### 00132 00134 static void declareOptions(OptionList& ol); 00135 00139 void updateCostAndBagOutput(const Vec& target, const Vec& output, 00140 Vec& costs) const; 00141 00143 void fillSubTarget(const Vec& target) const; 00144 00145 private: 00146 //##### Private Member Functions ######################################## 00147 00149 // (PLEASE IMPLEMENT IN .cc) 00150 void build_(); 00151 00152 private: 00153 //##### Private Data Members ############################################ 00154 00155 // The rest of the private stuff goes here 00156 }; 00157 00158 // Declares a few other classes and functions related to this class 00159 DECLARE_OBJECT_PTR(ToBagClassifier); 00160 00161 } // end of namespace PLearn 00162 00163 #endif 00164 00165 00166 /* 00167 Local Variables: 00168 mode:c++ 00169 c-basic-offset:4 00170 c-file-style:"stroustrup" 00171 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00172 indent-tabs-mode:nil 00173 fill-column:79 00174 End: 00175 */ 00176 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :