PLearn 0.1
PotentialsVariable.h
Go to the documentation of this file.
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 :
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines