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: AffineTransformVariable.h 8770 2008-04-08 17:20:13Z tihocan $ 00040 * This file is part of the PLearn library. 00041 ******************************************************* */ 00042 00043 #ifndef AffineTransformVariable_INC 00044 #define AffineTransformVariable_INC 00045 00046 #include "BinaryVariable.h" 00047 // For inline function that can return either an AffineTransformVariable or a MatrixAffineTransformVariable 00048 #include "MatrixAffineTransformVariable.h" 00049 00050 namespace PLearn { 00051 using namespace std; 00052 00053 00054 class AffineTransformVariable: public BinaryVariable 00055 { 00056 typedef BinaryVariable inherited; 00057 00058 public: 00059 00060 // Public options. 00061 00062 bool force_row_vec; 00063 00065 AffineTransformVariable() {} 00066 AffineTransformVariable(Variable* vec, Variable* transformation, 00067 bool call_build_ = true); 00068 00069 00070 PLEARN_DECLARE_OBJECT(AffineTransformVariable); 00071 00072 virtual void build(); 00073 00074 virtual void recomputeSize(int& l, int& w) const; 00075 virtual void fprop(); 00076 virtual void bprop(); 00077 virtual void symbolicBprop(); 00078 00079 private: 00080 00081 void build_(); 00082 00083 protected: 00084 00085 static void declareOptions(OptionList& ol); 00086 00087 }; 00088 00089 DECLARE_OBJECT_PTR(AffineTransformVariable); 00090 00096 inline Var affine_transform(Var vec, Var transformation, 00097 bool force_row_vec = false) 00098 { 00099 if (vec->isVec()) { 00100 PP<AffineTransformVariable> res = 00101 new AffineTransformVariable(vec, transformation, false); 00102 res->force_row_vec = force_row_vec; 00103 res->build(); 00104 return get_pointer(res); 00105 } 00106 else return new MatrixAffineTransformVariable(vec, transformation); 00107 } 00108 00109 } // end of namespace PLearn 00110 00111 #endif 00112 00113 00114 /* 00115 Local Variables: 00116 mode:c++ 00117 c-basic-offset:4 00118 c-file-style:"stroustrup" 00119 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00120 indent-tabs-mode:nil 00121 fill-column:79 00122 End: 00123 */ 00124 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :