PLearn::AffineTransformWeightPenalty Class Reference

Weight decay terms for affine transforms. More...

#include <AffineTransformWeightPenalty.h>

Inheritance diagram for PLearn::AffineTransformWeightPenalty:

[legend]Collaboration diagram for PLearn::AffineTransformWeightPenalty:

[legend]List of all members.

Public Member Functions
	AffineTransformWeightPenalty ()
	Default constructor for persistence.
	AffineTransformWeightPenalty (Variable *affinetransform, real weight_decay, real bias_decay=0., bool L1_penalty=false)
	PLEARN_DECLARE_OBJECT (AffineTransformWeightPenalty)
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 ()
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	weight_decay_
real	bias_decay_
bool	L1_penalty_
Private Types
typedef UnaryVariable	inherited

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Detailed Description

Weight decay terms for affine transforms.

Definition at line 53 of file AffineTransformWeightPenalty.h.

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Member Typedef Documentation

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

Reimplemented from PLearn::UnaryVariable. Definition at line 55 of file AffineTransformWeightPenalty.h.

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Constructor & Destructor Documentation

PLearn::AffineTransformWeightPenalty::AffineTransformWeightPenalty (   )  [inline]

Default constructor for persistence. Definition at line 64 of file AffineTransformWeightPenalty.h. References bias_decay_, L1_penalty_, and weight_decay_.

PLearn::AffineTransformWeightPenalty::AffineTransformWeightPenalty (  Variable *  affinetransform, real  weight_decay, real  bias_decay = 0., bool  L1_penalty = false )  [inline]

Definition at line 67 of file AffineTransformWeightPenalty.h. References bias_decay_, L1_penalty_, and weight_decay_.

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Member Function Documentation

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

Implements PLearn::Variable. Definition at line 87 of file AffineTransformWeightPenalty.cc. References bias_decay_, L1_penalty_, PLearn::Var::length(), PLearn::multiplyAcc(), PLERROR, PLearn::two(), weight_decay_, and PLearn::Var::width().

void PLearn::AffineTransformWeightPenalty::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 56 of file AffineTransformWeightPenalty.cc. References PLearn::declareOption(), and PLearn::OptionList.

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

compute output given input Implements PLearn::Variable. Definition at line 64 of file AffineTransformWeightPenalty.cc. References bias_decay_, L1_penalty_, PLearn::Var::length(), PLearn::sumabs(), PLearn::sumsquare(), and weight_decay_.

PLearn::AffineTransformWeightPenalty::PLEARN_DECLARE_OBJECT (  AffineTransformWeightPenalty   )

void PLearn::AffineTransformWeightPenalty::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 52 of file AffineTransformWeightPenalty.cc.

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Member Data Documentation

real PLearn::AffineTransformWeightPenalty::bias_decay_ [protected]

Definition at line 59 of file AffineTransformWeightPenalty.h. Referenced by AffineTransformWeightPenalty(), bprop(), and fprop().

bool PLearn::AffineTransformWeightPenalty::L1_penalty_ [protected]

Definition at line 60 of file AffineTransformWeightPenalty.h. Referenced by AffineTransformWeightPenalty(), bprop(), and fprop().

real PLearn::AffineTransformWeightPenalty::weight_decay_ [protected]

Definition at line 58 of file AffineTransformWeightPenalty.h. Referenced by AffineTransformWeightPenalty(), bprop(), and fprop().

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

• AffineTransformWeightPenalty.h
• AffineTransformWeightPenalty.cc

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