PLearn::UnequalConstantVariable Class Reference

A scalar var; equal 1 if input1!=c, 0 otherwise. More...

#include <UnequalConstantVariable.h>

Inheritance diagram for PLearn::UnequalConstantVariable:

[legend]Collaboration diagram for PLearn::UnequalConstantVariable:

[legend]List of all members.

Public Member Functions
	UnequalConstantVariable ()
	Default constructor for persistence.
	UnequalConstantVariable (Variable *input1, real c)
	PLEARN_DECLARE_OBJECT (UnequalConstantVariable)
virtual string	info () const
	returns a bit more informative string about object (default returns classname())
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
Static Public Member Functions
void	declareOptions (OptionList &ol)
	redefine this in subclasses: call declareOption(...) for each option, and then call inherited::declareOptions(options) ( see the declareOption function further down)
Protected Attributes
real	c
Private Types
typedef UnaryVariable	inherited

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Detailed Description

A scalar var; equal 1 if input1!=c, 0 otherwise.

Definition at line 54 of file UnequalConstantVariable.h.

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Member Typedef Documentation

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

Reimplemented from PLearn::UnaryVariable. Definition at line 56 of file UnequalConstantVariable.h. Referenced by UnequalConstantVariable().

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Constructor & Destructor Documentation

PLearn::UnequalConstantVariable::UnequalConstantVariable (   )  [inline]

Default constructor for persistence. Definition at line 63 of file UnequalConstantVariable.h. References c.

PLearn::UnequalConstantVariable::UnequalConstantVariable (  Variable *  input1, real  c )

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

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Member Function Documentation

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

Implements PLearn::Variable. Definition at line 83 of file UnequalConstantVariable.cc.

void PLearn::UnequalConstantVariable::declareOptions (  OptionList &  ol  )  [static]

redefine this in subclasses: call declareOption(...) for each option, and then call inherited::declareOptions(options) ( see the declareOption function further down) ex: static void declareOptions(OptionList& ol) { declareOption(ol, "inputsize", &MyObject::inputsize_, OptionBase::buildoption, "the size of the input\n it must be provided"); declareOption(ol, "weights", &MyObject::weights, OptionBase::learntoption, "the learnt model weights"); inherited::declareOptions(ol); } Reimplemented from PLearn::UnaryVariable. Definition at line 60 of file UnequalConstantVariable.cc. References PLearn::declareOption(), and PLearn::OptionList.

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

compute output given input Implements PLearn::Variable. Definition at line 75 of file UnequalConstantVariable.cc. References c, and PLearn::Variable::nelems().

virtual string PLearn::UnequalConstantVariable::info (   )  const [inline, virtual]

returns a bit more informative string about object (default returns classname()) Reimplemented from PLearn::Object. Definition at line 69 of file UnequalConstantVariable.h. References c, and PLearn::tostring().

PLearn::UnequalConstantVariable::PLEARN_DECLARE_OBJECT (  UnequalConstantVariable   )

void PLearn::UnequalConstantVariable::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 66 of file UnequalConstantVariable.cc. References PLearn::Var::length(), and PLearn::Var::width().

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

compute a piece of new Var graph that represents the symbolic derivative of this Var Reimplemented from PLearn::Variable. Definition at line 85 of file UnequalConstantVariable.cc.

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Member Data Documentation

real PLearn::UnequalConstantVariable::c [protected]

Definition at line 59 of file UnequalConstantVariable.h. Referenced by fprop(), info(), and UnequalConstantVariable().

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

• UnequalConstantVariable.h
• UnequalConstantVariable.cc

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