PLearn 0.1
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multiplies a matrix var by a scalar var More...
#include <TimesScalarVariable.h>
Public Member Functions | |
TimesScalarVariable () | |
Default constructor. | |
TimesScalarVariable (Variable *input1, Variable *input2, bool call_build_=true) | |
Convenience constructor. | |
virtual string | classname () const |
virtual OptionList & | getOptionList () const |
virtual OptionMap & | getOptionMap () const |
virtual RemoteMethodMap & | getRemoteMethodMap () const |
virtual TimesScalarVariable * | deepCopy (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 () |
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 | |
virtual void | rfprop () |
Static Public Member Functions | |
static string | _classname_ () |
TimesScalarVariable. | |
static OptionList & | _getOptionList_ () |
static RemoteMethodMap & | _getRemoteMethodMap_ () |
static Object * | _new_instance_for_typemap_ () |
static bool | _isa_ (const Object *o) |
static void | _static_initialize_ () |
static const PPath & | declaringFile () |
Static Public Attributes | |
static StaticInitializer | _static_initializer_ |
Private Types | |
typedef BinaryVariable | inherited |
Private Member Functions | |
void | build_ () |
This does the actual building. |
multiplies a matrix var by a scalar var
Definition at line 53 of file TimesScalarVariable.h.
typedef BinaryVariable PLearn::TimesScalarVariable::inherited [private] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 55 of file TimesScalarVariable.h.
PLearn::TimesScalarVariable::TimesScalarVariable | ( | ) | [inline] |
string PLearn::TimesScalarVariable::_classname_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TimesScalarVariable.cc.
OptionList & PLearn::TimesScalarVariable::_getOptionList_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TimesScalarVariable.cc.
RemoteMethodMap & PLearn::TimesScalarVariable::_getRemoteMethodMap_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TimesScalarVariable.cc.
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TimesScalarVariable.cc.
Object * PLearn::TimesScalarVariable::_new_instance_for_typemap_ | ( | ) | [static] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TimesScalarVariable.cc.
StaticInitializer TimesScalarVariable::_static_initializer_ & PLearn::TimesScalarVariable::_static_initialize_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TimesScalarVariable.cc.
void PLearn::TimesScalarVariable::bprop | ( | ) | [virtual] |
Implements PLearn::Variable.
Definition at line 103 of file TimesScalarVariable.cc.
References PLearn::Variable::gradientdata, PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, and PLearn::Variable::nelems().
{ for(int k=0; k<nelems(); k++) { input1->gradientdata[k] += input2->valuedata[0]*gradientdata[k]; input2->gradientdata[0] += input1->valuedata[k]*gradientdata[k]; } }
void PLearn::TimesScalarVariable::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::BinaryVariable.
Definition at line 73 of file TimesScalarVariable.cc.
References PLearn::BinaryVariable::build(), and build_().
{ inherited::build(); build_(); }
void PLearn::TimesScalarVariable::build_ | ( | ) | [private] |
This does the actual building.
Reimplemented from PLearn::BinaryVariable.
Definition at line 80 of file TimesScalarVariable.cc.
References PLearn::BinaryVariable::input2, and PLERROR.
Referenced by build(), and TimesScalarVariable().
string PLearn::TimesScalarVariable::classname | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TimesScalarVariable.cc.
static const PPath& PLearn::TimesScalarVariable::declaringFile | ( | ) | [inline, static] |
TimesScalarVariable * PLearn::TimesScalarVariable::deepCopy | ( | CopiesMap & | copies | ) | const [virtual] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TimesScalarVariable.cc.
void PLearn::TimesScalarVariable::fprop | ( | ) | [virtual] |
compute output given input
Implements PLearn::Variable.
Definition at line 95 of file TimesScalarVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::Variable::nelems(), and PLearn::Variable::valuedata.
{ real scal = input2->valuedata[0]; for(int k=0; k<nelems(); k++) valuedata[k] = input1->valuedata[k] * scal; }
OptionList & PLearn::TimesScalarVariable::getOptionList | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TimesScalarVariable.cc.
OptionMap & PLearn::TimesScalarVariable::getOptionMap | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TimesScalarVariable.cc.
RemoteMethodMap & PLearn::TimesScalarVariable::getRemoteMethodMap | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TimesScalarVariable.cc.
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 86 of file TimesScalarVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::Var::length(), and PLearn::Var::width().
void PLearn::TimesScalarVariable::rfprop | ( | ) | [virtual] |
Reimplemented from PLearn::Variable.
Definition at line 121 of file TimesScalarVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::TVec< T >::length(), PLearn::Variable::nelems(), PLearn::BinaryVariable::resizeRValue(), PLearn::Variable::rValue, and PLearn::Variable::rvaluedata.
{ if (rValue.length()==0) resizeRValue(); real scal = input2->valuedata[0]; real rscal = input2->rvaluedata[0]; for(int k=0; k<nelems(); k++) rvaluedata[k] = input1->rvaluedata[k] * scal + input1->valuedata[k] * rscal; }
void PLearn::TimesScalarVariable::symbolicBprop | ( | ) | [virtual] |
compute a piece of new Var graph that represents the symbolic derivative of this Var
Reimplemented from PLearn::Variable.
Definition at line 113 of file TimesScalarVariable.cc.
References PLearn::dot(), PLearn::Variable::g, PLearn::BinaryVariable::input1, and PLearn::BinaryVariable::input2.
Reimplemented from PLearn::BinaryVariable.
Definition at line 66 of file TimesScalarVariable.h.