PLearn::SignVariable Class Reference

sign(x) = 1 if x>0, -1 if x<0, 0 if x=0, all done element by element. More...

#include <SignVariable.h>

Inheritance diagram for PLearn::SignVariable:

[legend]Collaboration diagram for PLearn::SignVariable:

[legend]List of all members.

Public Member Functions
	SignVariable ()
	Default constructor for persistence.
	SignVariable (Variable *input)
	PLEARN_DECLARE_OBJECT (SignVariable)
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

---

Detailed Description

sign(x) = 1 if x>0, -1 if x<0, 0 if x=0, all done element by element.

Definition at line 53 of file SignVariable.h.

---

Member Typedef Documentation

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

Reimplemented from PLearn::UnaryVariable. Definition at line 55 of file SignVariable.h. Referenced by SignVariable().

---

Constructor & Destructor Documentation

PLearn::SignVariable::SignVariable (   )  [inline]

Default constructor for persistence. Definition at line 59 of file SignVariable.h.

PLearn::SignVariable::SignVariable (  Variable *  input  )

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

---

Member Function Documentation

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

Implements PLearn::Variable. Definition at line 76 of file SignVariable.cc.

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

compute output given input Implements PLearn::Variable. Definition at line 68 of file SignVariable.cc. References PLearn::Variable::nelems(), and PLearn::sign().

PLearn::SignVariable::PLEARN_DECLARE_OBJECT (  SignVariable   )

void PLearn::SignVariable::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 59 of file SignVariable.cc. References PLearn::Var::length(), and PLearn::Var::width().

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

compute a piece of new Var graph that represents the symbolic derivative of this Var Reimplemented from PLearn::Variable. Definition at line 81 of file SignVariable.cc.

---

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

• SignVariable.h
• SignVariable.cc

---