#include <AffineTransformVariable.h>
Inheritance diagram for PLearn::AffineTransformVariable:
Public Member Functions | |
| AffineTransformVariable () | |
| Default constructor for persistence. | |
| AffineTransformVariable (Variable *vec, Variable *transformation) | |
| PLEARN_DECLARE_OBJECT (AffineTransformVariable) | |
| virtual void | build () |
| Should call simply inherited::build(), then this class's build_(). | |
| virtual void | recomputeSize (int &l, int &w) const |
| Recomputes the length l and width w that this variable should have, according to its parent variables. | |
| virtual void | fprop () |
| compute output given input | |
| virtual void | bprop () |
| virtual void | symbolicBprop () |
| compute a piece of new Var graph that represents the symbolic derivative of this Var | |
Protected Member Functions | |
| void | build_ () |
Private Types | |
| typedef BinaryVariable | inherited |
Should work for both column and row vectors: result vector will be of same kind (row or col) First row of transformation matrix contains bias b, following rows contain linear-transformation T Will compute b + x.T (if you consider b and x to be row vectors) which is equivalent to b +
Definition at line 59 of file AffineTransformVariable.h.
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Reimplemented from PLearn::BinaryVariable. Definition at line 61 of file AffineTransformVariable.h. Referenced by AffineTransformVariable(). |
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Default constructor for persistence.
Definition at line 65 of file AffineTransformVariable.h. |
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Definition at line 53 of file AffineTransformVariable.cc. |
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Implements PLearn::Variable. Definition at line 94 of file AffineTransformVariable.cc. References PLearn::externalProductAcc(), PLearn::TMat< T >::firstRow(), PLearn::TMat< T >::length(), PLearn::productAcc(), and PLearn::TMat< T >::subMatRows(). |
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Should call simply inherited::build(), then this class's build_(). This method should be callable again at later times, after modifying some option fields to change the "architecture" of the object. Reimplemented from PLearn::Variable. Definition at line 62 of file AffineTransformVariable.cc. References build_(). |
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This method should be redefined in subclasses and do the actual building of the object according to previously set option fields. Constructors can just set option fields, and then call build_. This method is NOT virtual, and will typically be called only from three places: a constructor, the public virtual build() method, and possibly the public virtual read method (which calls its parent's read). build_() can assume that it's parent's build_ has already been called. Reimplemented from PLearn::Variable. Definition at line 69 of file AffineTransformVariable.cc. References PLERROR. Referenced by AffineTransformVariable(), and build(). |
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compute output given input
Implements PLearn::Variable. Definition at line 86 of file AffineTransformVariable.cc. References PLearn::Var::length(), PLearn::Mat, and PLearn::transposeProductAcc(). |
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Recomputes the length l and width w that this variable should have, according to its parent variables. This is used for ex. by sizeprop() The default version stupidly returns the current dimensions, so make sure to overload it in subclasses if this is not appropriate. Reimplemented from PLearn::Variable. Definition at line 76 of file AffineTransformVariable.cc. References PLearn::Var::width(). |
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compute a piece of new Var graph that represents the symbolic derivative of this Var
Reimplemented from PLearn::Variable. Definition at line 112 of file AffineTransformVariable.cc. References PLERROR. |
1.3.7