PLearn 0.1
ArgminOfVariable.h
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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: ArgminOfVariable.h 6506 2006-12-14 16:49:18Z tihocan $
00040  * This file is part of the PLearn library.
00041  ******************************************************* */
00042 
00043 #ifndef ArgminOfVariable_INC
00044 #define ArgminOfVariable_INC
00045 
00046 #include "NaryVariable.h"
00047 
00048 namespace PLearn {
00049 using namespace std;
00050 
00051 
00054 class ArgminOfVariable: public NaryVariable
00055 {
00056 
00057     typedef NaryVariable inherited;
00058     
00059 protected:
00061     ArgminOfVariable() : inputs(), expression(), values_of_v(), v(),
00062                          index_of_argmin(), vv_path(), e_path(), v_path() {}
00063 
00064 protected:
00065     VarArray inputs;
00066     Var expression;
00067     Var values_of_v;
00068     Var v;
00069     int index_of_argmin;
00070 
00071     VarArray vv_path; 
00072     VarArray e_path; 
00073     VarArray v_path; 
00074 
00075 public:
00076     ArgminOfVariable(Variable* the_v,
00077                      Variable* the_expression,
00078                      Variable* the_values_of_v,
00079                      const VarArray& the_inputs);
00080     PLEARN_DECLARE_OBJECT(ArgminOfVariable);
00081     virtual void recomputeSize(int& l, int& w) const;
00082     virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies);
00083     virtual void fprop();
00084     virtual void bprop();
00085 };
00086 
00089 inline Var argminOf(Var v, Var expression, Var values_of_v, VarArray inputs)
00090 { return new ArgminOfVariable(v, expression, values_of_v, inputs); }
00091 
00092 } // end of namespace PLearn
00093 
00094 #endif 
00095 
00096 
00097 /*
00098   Local Variables:
00099   mode:c++
00100   c-basic-offset:4
00101   c-file-style:"stroustrup"
00102   c-file-offsets:((innamespace . 0)(inline-open . 0))
00103   indent-tabs-mode:nil
00104   fill-column:79
00105   End:
00106 */
00107 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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