PLearn 0.1
IsMissingVariable.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: IsMissingVariable.h 5707 2006-05-29 20:54:47Z larocheh $
00040  * This file is part of the PLearn library.
00041  ******************************************************* */
00042 
00043 #ifndef IsMissingVariable_INC
00044 #define IsMissingVariable_INC
00045 
00046 #include "UnaryVariable.h"
00047 
00048 namespace PLearn {
00049 using namespace std;
00050 
00051 
00053 class IsMissingVariable: public UnaryVariable
00054 {
00055     typedef UnaryVariable inherited;
00056 
00057 protected:
00059     bool parallel; 
00063     bool set_parallel_missing_output;
00065     Vec parallel_missing_outputs;
00066 
00067 private:
00068     //#####  Private Member Functions  ########################################
00069 
00071     void build_();
00072 
00073 public:
00075     IsMissingVariable() {}
00076     IsMissingVariable(Variable* input1, bool parallel=0, bool set_parallel_missing_output=0, Vec parallel_missing_outputs = Vec(0));
00077 
00078     PLEARN_DECLARE_OBJECT(IsMissingVariable);
00079     static void declareOptions(OptionList &ol);
00080 
00081     // Simply calls inherited::build() then build_()
00082     virtual void build();
00083 
00084     virtual string info() const
00085     { return string("IsMissingVariable ()"); }
00086 
00087     virtual void recomputeSize(int& l, int& w) const;
00088     virtual void fprop();
00089     virtual void bprop();
00090     virtual void symbolicBprop();
00091 
00093     virtual void makeDeepCopyFromShallowCopy(CopiesMap& copies);
00094 };
00095 
00096 DECLARE_OBJECT_PTR(IsMissingVariable);
00097 
00098 inline Var isMissing(Var x, bool parallel, bool set_parallel_missing_output, real parallel_missing_output) { 
00099     Vec parallel_missing_outputs(x->size()); 
00100     parallel_missing_outputs.fill(parallel_missing_output); 
00101     return new IsMissingVariable(x, parallel,set_parallel_missing_output,parallel_missing_outputs); }
00102 inline Var isMissing(Var x, bool parallel=0, bool set_parallel_missing_output=0, Vec parallel_missing_outputs = Vec(0)) { return new IsMissingVariable(x, parallel,set_parallel_missing_output,parallel_missing_outputs); }
00103 
00104 } // end of namespace PLearn
00105 
00106 #endif 
00107 
00108 
00109 /*
00110   Local Variables:
00111   mode:c++
00112   c-basic-offset:4
00113   c-file-style:"stroustrup"
00114   c-file-offsets:((innamespace . 0)(inline-open . 0))
00115   indent-tabs-mode:nil
00116   fill-column:79
00117   End:
00118 */
00119 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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