PLearn::ArgmaxVariable Class Reference

#include <ArgmaxVariable.h>

Inheritance diagram for PLearn::ArgmaxVariable:

[legend]Collaboration diagram for PLearn::ArgmaxVariable:

[legend]List of all members.

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

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Detailed Description

This variable computes the index of the maximum value in the input It is a scalar variable if the input is a vector (single row or single column) Otherwise it is a single-column of length() 2 containing the (i,j) coordinate of the max

Definition at line 56 of file ArgmaxVariable.h.

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Member Typedef Documentation

typedef UnaryVariable PLearn::ArgmaxVariable::inherited [private]

Reimplemented from PLearn::UnaryVariable. Definition at line 58 of file ArgmaxVariable.h. Referenced by ArgmaxVariable().

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Constructor & Destructor Documentation

PLearn::ArgmaxVariable::ArgmaxVariable (   )  [inline]

Default constructor for persistence. Definition at line 62 of file ArgmaxVariable.h.

PLearn::ArgmaxVariable::ArgmaxVariable (  Variable *  input  )

Definition at line 55 of file ArgmaxVariable.cc. References inherited.

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Member Function Documentation

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

Implements PLearn::Variable. Definition at line 106 of file ArgmaxVariable.cc.

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

compute output given input Implements PLearn::Variable. Definition at line 67 of file ArgmaxVariable.cc. References PLearn::argmax(), k, PLearn::Var::length(), val, and PLearn::Var::width().

PLearn::ArgmaxVariable::PLEARN_DECLARE_OBJECT (  ArgmaxVariable   )

void PLearn::ArgmaxVariable::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 60 of file ArgmaxVariable.cc.

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

compute a piece of new Var graph that represents the symbolic derivative of this Var Reimplemented from PLearn::Variable. Definition at line 108 of file ArgmaxVariable.cc.

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

• ArgmaxVariable.h
• ArgmaxVariable.cc

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