PLearn::ColumnSumVariable Class Reference

result is a single row that contains the sum of each column of the input More...

#include <ColumnSumVariable.h>

Inheritance diagram for PLearn::ColumnSumVariable:

[legend]Collaboration diagram for PLearn::ColumnSumVariable:

[legend]List of all members.

Public Member Functions
	ColumnSumVariable (Variable *input)
	ColumnSumVariable *.
	PLEARN_DECLARE_OBJECT (ColumnSumVariable)
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 Types
typedef UnaryVariable	inherited
Protected Member Functions
	ColumnSumVariable ()
	Default constructor for persistence.

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Detailed Description

result is a single row that contains the sum of each column of the input

Definition at line 53 of file ColumnSumVariable.h.

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Member Typedef Documentation

typedef UnaryVariable PLearn::ColumnSumVariable::inherited [protected]

Reimplemented from PLearn::UnaryVariable. Definition at line 56 of file ColumnSumVariable.h.

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Constructor & Destructor Documentation

PLearn::ColumnSumVariable::ColumnSumVariable (   )  [inline, protected]

Default constructor for persistence. Definition at line 58 of file ColumnSumVariable.h.

PLearn::ColumnSumVariable::ColumnSumVariable (  Variable *  input  )

ColumnSumVariable *. Definition at line 51 of file ColumnSumVariable.cc.

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Member Function Documentation

void PLearn::ColumnSumVariable::bprop (   )  [virtual]

Implements PLearn::Variable. Definition at line 77 of file ColumnSumVariable.cc. References k, PLearn::Var::length(), and PLearn::Var::width().

void PLearn::ColumnSumVariable::fprop (   )  [virtual]

compute output given input Implements PLearn::Variable. Definition at line 67 of file ColumnSumVariable.cc. References PLearn::TVec< T >::clear(), k, PLearn::Var::length(), and PLearn::Var::width().

PLearn::ColumnSumVariable::PLEARN_DECLARE_OBJECT (  ColumnSumVariable   )

void PLearn::ColumnSumVariable::recomputeSize (  int &  l, int &  w )  const [virtual]

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 57 of file ColumnSumVariable.cc. References PLearn::Var::width().

void PLearn::ColumnSumVariable::symbolicBprop (   )  [virtual]

compute a piece of new Var graph that represents the symbolic derivative of this Var Reimplemented from PLearn::Variable. Definition at line 86 of file ColumnSumVariable.cc.

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The documentation for this class was generated from the following files:

• ColumnSumVariable.h
• ColumnSumVariable.cc

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