PLearn 0.1
Public Member Functions | Static Public Member Functions | Static Public Attributes | Protected Member Functions | Private Types
PLearn::DeterminantVariable Class Reference

The argument must be a square matrix Var and the result is its determinant. More...

#include <DeterminantVariable.h>

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List of all members.

Public Member Functions

 DeterminantVariable ()
 Default constructor for persistence.
 DeterminantVariable (Var m)
virtual string classname () const
virtual OptionListgetOptionList () const
virtual OptionMapgetOptionMap () const
virtual RemoteMethodMapgetRemoteMethodMap () const
virtual DeterminantVariabledeepCopy (CopiesMap &copies) const
virtual void build ()
 Post-constructor.
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 ()
 Nothing to do by default.
virtual void bprop ()
 Nothing to do by default.
virtual void symbolicBprop ()
 compute a piece of new Var graph that represents the symbolic derivative of this Var

Static Public Member Functions

static string _classname_ ()
 DeterminantVariable.
static OptionList_getOptionList_ ()
static RemoteMethodMap_getRemoteMethodMap_ ()
static Object_new_instance_for_typemap_ ()
static bool _isa_ (const Object *o)
static void _static_initialize_ ()
static const PPathdeclaringFile ()

Static Public Attributes

static StaticInitializer _static_initializer_

Protected Member Functions

void build_ ()
 Object-specific post-constructor.

Private Types

typedef UnaryVariable inherited

Detailed Description

The argument must be a square matrix Var and the result is its determinant.

Definition at line 54 of file DeterminantVariable.h.


Member Typedef Documentation

Reimplemented from PLearn::UnaryVariable.

Definition at line 56 of file DeterminantVariable.h.


Constructor & Destructor Documentation

PLearn::DeterminantVariable::DeterminantVariable ( ) [inline]

Default constructor for persistence.

Definition at line 60 of file DeterminantVariable.h.

{}
PLearn::DeterminantVariable::DeterminantVariable ( Var  m)

Definition at line 54 of file DeterminantVariable.cc.

References build_().

    : inherited(m,1,1) 
{
    build_();
}

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Member Function Documentation

string PLearn::DeterminantVariable::_classname_ ( ) [static]

DeterminantVariable.

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

OptionList & PLearn::DeterminantVariable::_getOptionList_ ( ) [static]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

RemoteMethodMap & PLearn::DeterminantVariable::_getRemoteMethodMap_ ( ) [static]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

bool PLearn::DeterminantVariable::_isa_ ( const Object o) [static]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

Object * PLearn::DeterminantVariable::_new_instance_for_typemap_ ( ) [static]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

StaticInitializer DeterminantVariable::_static_initializer_ & PLearn::DeterminantVariable::_static_initialize_ ( ) [static]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

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

Nothing to do by default.

Reimplemented from PLearn::UnaryVariable.

Definition at line 86 of file DeterminantVariable.cc.

References PLERROR.

{
    PLERROR("DeterminantVariable::bprop not implemented yet");
}
void PLearn::DeterminantVariable::build ( ) [virtual]

Post-constructor.

The normal implementation 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::UnaryVariable.

Definition at line 61 of file DeterminantVariable.cc.

References PLearn::UnaryVariable::build(), and build_().

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

Object-specific post-constructor.

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 its parent's build_() has already been called.

Reimplemented from PLearn::UnaryVariable.

Definition at line 68 of file DeterminantVariable.cc.

References PLearn::UnaryVariable::input, PLearn::Var::length(), PLERROR, and PLearn::Var::width().

Referenced by build(), and DeterminantVariable().

{
    if (input && (input->width() != input->length()))
        PLERROR("Max2Variable: parent(%d,%d) must be a square matrix",
                input->length() != input->width());
}

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string PLearn::DeterminantVariable::classname ( ) const [virtual]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

static const PPath& PLearn::DeterminantVariable::declaringFile ( ) [inline, static]

Reimplemented from PLearn::UnaryVariable.

Definition at line 63 of file DeterminantVariable.h.

:
    void build_();
DeterminantVariable * PLearn::DeterminantVariable::deepCopy ( CopiesMap copies) const [virtual]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

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

Nothing to do by default.

Reimplemented from PLearn::UnaryVariable.

Definition at line 80 of file DeterminantVariable.cc.

References PLearn::det(), PLearn::UnaryVariable::input, and PLearn::Variable::valuedata.

{
    valuedata[0] = det(input->matValue);
}

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OptionList & PLearn::DeterminantVariable::getOptionList ( ) const [virtual]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

OptionMap & PLearn::DeterminantVariable::getOptionMap ( ) const [virtual]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

RemoteMethodMap & PLearn::DeterminantVariable::getRemoteMethodMap ( ) const [virtual]

Reimplemented from PLearn::UnaryVariable.

Definition at line 52 of file DeterminantVariable.cc.

void PLearn::DeterminantVariable::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 76 of file DeterminantVariable.cc.

{ l=1; w=1; }
void PLearn::DeterminantVariable::symbolicBprop ( ) [virtual]

compute a piece of new Var graph that represents the symbolic derivative of this Var

Reimplemented from PLearn::Variable.

Definition at line 92 of file DeterminantVariable.cc.

References PLERROR.

{
    PLERROR("DeterminantVariable::symbolicBprop not implemented yet");
}

Member Data Documentation

Reimplemented from PLearn::UnaryVariable.

Definition at line 63 of file DeterminantVariable.h.


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