PLearn::ConcatColumnsVariable Class Reference

concatenation of the columns of several variables More...

#include <ConcatColumnsVariable.h>

Inheritance diagram for PLearn::ConcatColumnsVariable:

[legend]Collaboration diagram for PLearn::ConcatColumnsVariable:

[legend]List of all members.

Public Member Functions
	ConcatColumnsVariable ()
	default constructor for persistence
	ConcatColumnsVariable (const VarArray &vararray)
	all the variables must have the same number of rows
	PLEARN_DECLARE_OBJECT (ConcatColumnsVariable)
virtual void	build ()
	Should call simply inherited::build(), then this class's build_().
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 Member Functions
void	build_ ()
Private Types
typedef NaryVariable	inherited

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Detailed Description

concatenation of the columns of several variables

Definition at line 53 of file ConcatColumnsVariable.h.

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Member Typedef Documentation

typedef NaryVariable PLearn::ConcatColumnsVariable::inherited [private]

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

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Constructor & Destructor Documentation

PLearn::ConcatColumnsVariable::ConcatColumnsVariable (   )  [inline]

default constructor for persistence Definition at line 59 of file ConcatColumnsVariable.h.

PLearn::ConcatColumnsVariable::ConcatColumnsVariable (  const VarArray &  vararray  )

all the variables must have the same number of rows Definition at line 56 of file ConcatColumnsVariable.cc. References build_(), and inherited.

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Member Function Documentation

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

Implements PLearn::Variable. Definition at line 107 of file ConcatColumnsVariable.cc. References PLearn::TMat< T >::length(), PLearn::TMat< T >::mod(), and PLearn::TVec< Var >::size().

void PLearn::ConcatColumnsVariable::build (   )  [virtual]

Should call simply inherited::build(), then this class's build_(). This method should be callable again at later times, after modifying some option fields to change the "architecture" of the object. Reimplemented from PLearn::Variable. Definition at line 63 of file ConcatColumnsVariable.cc. References build_().

void PLearn::ConcatColumnsVariable::build_ (   )  [protected]

This method should be redefined in subclasses and do the actual building of the object according to previously set option fields. Constructors can just set option fields, and then call build_. This method is NOT virtual, and will typically be called only from three places: a constructor, the public virtual build() method, and possibly the public virtual read method (which calls its parent's read). build_() can assume that it's parent's build_ has already been called. Reimplemented from PLearn::Variable. Definition at line 70 of file ConcatColumnsVariable.cc. References PLearn::TVec< Var >::length(), and PLERROR. Referenced by build(), and ConcatColumnsVariable().

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

compute output given input Implements PLearn::Variable. Definition at line 89 of file ConcatColumnsVariable.cc. References PLearn::TMat< T >::length(), PLearn::TMat< T >::mod(), and PLearn::TVec< Var >::size().

PLearn::ConcatColumnsVariable::PLEARN_DECLARE_OBJECT (  ConcatColumnsVariable   )

void PLearn::ConcatColumnsVariable::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 80 of file ConcatColumnsVariable.cc. References PLearn::VarArray::maxLength(), and PLearn::VarArray::sumOfWidths().

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

compute a piece of new Var graph that represents the symbolic derivative of this Var Reimplemented from PLearn::Variable. Definition at line 125 of file ConcatColumnsVariable.cc. References k, PLearn::Variable::length(), PLearn::TVec< Var >::size(), and PLearn::Var::width().

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

• ConcatColumnsVariable.h
• ConcatColumnsVariable.cc

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