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: PotentialsVariable.h 3994 2005-08-25 13:35:03Z chapados $ 00040 * This file is part of the PLearn library. 00041 ******************************************************* */ 00042 00043 #ifndef PotentialsVariable_INC 00044 #define PotentialsVariable_INC 00045 00046 #include "NaryVariable.h" 00047 00048 namespace PLearn { 00049 using namespace std; 00050 00051 00052 class PotentialsVariable: public NaryVariable 00053 { 00054 typedef NaryVariable inherited; 00055 00056 protected: 00057 00059 // Mat temp_comps; 00060 TVec< VarArray > temp_comps; 00061 VarArray proppath; 00062 // To avoid allocation/deallocations in fprop/bprop 00063 mutable Vec values; 00064 00065 public: 00066 00067 VMat distr; 00068 Var input; 00069 Var output; 00070 Var comp_input; 00071 Var dp_target; 00072 Var target_dist_reps; 00073 VarArray params; 00074 00076 PotentialsVariable() {} 00077 PotentialsVariable(Var the_input, Var the_comp_input, Var the_dp_target, Var the_target_dist_rep, Var output, VarArray params, VMat the_distr); 00078 00079 PLEARN_DECLARE_OBJECT(PotentialsVariable); 00080 static void declareOptions(OptionList &ol); 00081 00082 virtual void build(); 00083 00084 virtual void recomputeSize(int& l, int& w) const; 00085 virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies); 00086 virtual void fprop(); 00087 virtual void bprop(); 00088 virtual void symbolicBprop(); 00089 virtual void rfprop(); 00090 00091 protected: 00092 void build_(); 00093 }; 00094 00095 DECLARE_OBJECT_PTR(PotentialsVariable); 00096 00097 inline Var potentials(Var the_input, Var the_comp_input, Var the_dp_target, Var the_target_dist_rep, Var the_output, VarArray the_proppath_params, VMat the_distr) 00098 { return new PotentialsVariable(the_input, the_comp_input, the_dp_target, the_target_dist_rep, the_output, the_proppath_params, the_distr); } 00099 00100 } // end of namespace PLearn 00101 00102 #endif 00103 00104 00105 /* 00106 Local Variables: 00107 mode:c++ 00108 c-basic-offset:4 00109 c-file-style:"stroustrup" 00110 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00111 indent-tabs-mode:nil 00112 fill-column:79 00113 End: 00114 */ 00115 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :