PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal 00006 // Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal 00007 // Copyright (C) 2002 Xiangdong Wang, Christian Dorion 00008 00009 // Redistribution and use in source and binary forms, with or without 00010 // modification, are permitted provided that the following conditions are met: 00011 // 00012 // 1. Redistributions of source code must retain the above copyright 00013 // notice, this list of conditions and the following disclaimer. 00014 // 00015 // 2. Redistributions in binary form must reproduce the above copyright 00016 // notice, this list of conditions and the following disclaimer in the 00017 // documentation and/or other materials provided with the distribution. 00018 // 00019 // 3. The name of the authors may not be used to endorse or promote 00020 // products derived from this software without specific prior written 00021 // permission. 00022 // 00023 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00024 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00025 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00026 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00027 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00028 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00029 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00030 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00031 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00032 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00033 // 00034 // This file is part of the PLearn library. For more information on the PLearn 00035 // library, go to the PLearn Web site at www.plearn.org 00036 00037 00038 /* ******************************************************* 00039 * $Id: UnaryVariable.h 9094 2008-06-03 21:08:22Z plearner $ 00040 * This file is part of the PLearn library. 00041 ******************************************************* */ 00042 00043 #ifndef UnaryVariable_INC 00044 #define UnaryVariable_INC 00045 00046 #include "VarArray.h" 00047 #include <plearn/math/TMat_maths.h> 00048 00049 namespace PLearn { 00050 using namespace std; 00051 00052 class UnaryVariable: public Variable 00053 { 00054 typedef Variable inherited; 00055 00056 protected: 00057 00058 Var input; 00059 00060 public: 00061 00063 UnaryVariable() {} 00064 00066 UnaryVariable(Variable* v, int thelength, int thewidth, 00067 bool call_build_ = true); 00068 00069 PLEARN_DECLARE_OBJECT(UnaryVariable); 00070 00071 virtual void build(); 00072 00075 void setInput(Var the_input); 00076 00077 virtual void setParents(const VarArray& parents); 00078 00079 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00080 virtual bool markPath(); 00081 virtual void buildPath(VarArray& proppath); 00082 virtual VarArray sources(); 00083 virtual VarArray random_sources(); 00084 virtual VarArray ancestors(); 00085 virtual void unmarkAncestors(); 00086 virtual void fprop() {} 00087 virtual void bprop() {} 00088 virtual VarArray parents(); 00089 void printInfo(bool print_gradient) 00090 { 00091 pout << getName() << "[" << (void*)this << "] " << *this 00092 << " (" << (void*)input << ") = " << value; 00093 if (print_gradient) 00094 pout << " gradient=" << gradient; 00095 pout << endl; 00096 } 00097 virtual void resizeRValue(); 00098 00100 void checkContiguity() const; 00101 00102 protected: 00103 00104 static void declareOptions(OptionList & ol); 00105 00106 private: 00107 00108 void build_(); 00109 }; 00110 00111 // Declares a few other classes and functions related to this class. 00112 DECLARE_OBJECT_PTR(UnaryVariable); 00113 00114 } // end of namespace PLearn 00115 00116 #endif 00117 00118 00119 /* 00120 Local Variables: 00121 mode:c++ 00122 c-basic-offset:4 00123 c-file-style:"stroustrup" 00124 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00125 indent-tabs-mode:nil 00126 fill-column:79 00127 End: 00128 */ 00129 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :