PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // LIBSVMSparseVMatrix.h 00004 // 00005 // Copyright (C) 2008 Hugo Larochelle 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: Hugo Larochelle 00036 00040 #ifndef LIBSVMSparseVMatrix_INC 00041 #define LIBSVMSparseVMatrix_INC 00042 00043 #include <plearn/vmat/RowBufferedVMatrix.h> 00044 #include <plearn/db/getDataSet.h> 00045 #include <plearn/vmat/VMat.h> 00046 00047 namespace PLearn { 00048 00052 class LIBSVMSparseVMatrix : public RowBufferedVMatrix 00053 { 00054 typedef RowBufferedVMatrix inherited; 00055 static VMatrixExtensionRegistrar* extension_registrar; 00056 00057 public: 00058 //##### Public Build Options ############################################ 00059 00061 TVec<string> class_strings; 00062 00064 PPath libsvm_file; 00065 00068 bool use_coarse_representation; 00069 00071 TVec< Vec > libsvm_input_data; 00072 00074 TVec< Vec > libsvm_extra_data; 00075 00077 Vec libsvm_target_data; 00078 00079 public: 00080 //##### Public Member Functions ######################################### 00081 00083 LIBSVMSparseVMatrix(); 00084 LIBSVMSparseVMatrix(PPath filename, bool use_coarse_representation); 00085 00086 //##### PLearn::Object Protocol ######################################### 00087 00088 // Declares other standard object methods. 00089 PLEARN_DECLARE_OBJECT(LIBSVMSparseVMatrix); 00090 00091 // Simply calls inherited::build() then build_() 00092 virtual void build(); 00093 00094 static VMat instantiateFromPPath(const PPath& filename) 00095 { 00096 //By default use normal representation 00097 return VMat(new LIBSVMSparseVMatrix(filename, true)); 00098 } 00099 00101 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00102 00103 virtual void getExample(int i, Vec& input, Vec& target, real& weight); 00104 00105 void getExamples(int i_start, int length, Mat& inputs, Mat& targets, 00106 Vec& weights, Mat* extra = NULL, 00107 bool allow_circular = false); 00108 00109 virtual void getExtra(int i, Vec& extra); 00110 00111 protected: 00112 //##### Protected Options ############################################### 00113 00114 protected: 00115 //##### Protected Member Functions ###################################### 00116 00118 static void declareOptions(OptionList& ol); 00119 00122 virtual void getNewRow(int i, const Vec& v) const; 00123 00124 private: 00125 //##### Private Member Functions ######################################## 00126 00128 void build_(); 00129 00130 private: 00131 //##### Private Data Members ############################################ 00132 00133 // The rest of the private stuff goes here 00134 }; 00135 00136 // Declares a few other classes and functions related to this class 00137 DECLARE_OBJECT_PTR(LIBSVMSparseVMatrix); 00138 00139 } // end of namespace PLearn 00140 00141 #endif 00142 00143 00144 /* 00145 Local Variables: 00146 mode:c++ 00147 c-basic-offset:4 00148 c-file-style:"stroustrup" 00149 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00150 indent-tabs-mode:nil 00151 fill-column:79 00152 End: 00153 */ 00154 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :