PLearn 0.1
SubMatTransposeVariable.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: SubMatTransposeVariable.h 3994 2005-08-25 13:35:03Z chapados $
00040  * This file is part of the PLearn library.
00041  ******************************************************* */
00042 
00043 #ifndef SubMatTransposeVariable_INC
00044 #define SubMatTransposeVariable_INC
00045 
00046 #include "UnaryVariable.h"
00047 
00048 namespace PLearn {
00049 using namespace std;
00050 
00051 
00052 class SubMatTransposeVariable: public UnaryVariable
00053 {
00054 
00055 private:
00056 
00057     typedef UnaryVariable inherited;
00058 
00059 protected:
00060 
00061     int startk;
00062     int length_, width_;
00063     int i_, j_;
00064 
00065 public:
00066 
00068     SubMatTransposeVariable() : startk(0), length_(0), width_(0), i_(0), j_(0) {}
00069     SubMatTransposeVariable(Variable* v, int i, int j, int the_length, int the_width);
00070 
00071     PLEARN_DECLARE_OBJECT(SubMatTransposeVariable);
00072     static void declareOptions(OptionList &ol);
00073 
00074     virtual void build();
00075 
00076     virtual void recomputeSize(int& l, int& w) const;
00077     virtual void fprop();
00078     virtual void bprop();
00079     virtual void symbolicBprop();
00080     virtual void rfprop();
00081 
00082 private:
00083 
00084     void build_();
00085 
00086 };
00087 
00088 DECLARE_OBJECT_PTR(SubMatTransposeVariable);
00089 
00090 inline Var transpose(Var v)
00091 { return new SubMatTransposeVariable(v,0,0,v->length(),v->width()); }
00092 
00093 } // end of namespace PLearn
00094 
00095 #endif 
00096 
00097 
00098 /*
00099   Local Variables:
00100   mode:c++
00101   c-basic-offset:4
00102   c-file-style:"stroustrup"
00103   c-file-offsets:((innamespace . 0)(inline-open . 0))
00104   indent-tabs-mode:nil
00105   fill-column:79
00106   End:
00107 */
00108 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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