PLearn 0.1
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Matrix product between transpose of matrix1 and matrix2. More...
#include <TransposeProductVariable.h>
Public Member Functions | |
TransposeProductVariable () | |
Default constructor for persistence. | |
TransposeProductVariable (Variable *matrix1, Variable *matrix2) | |
virtual string | classname () const |
virtual OptionList & | getOptionList () const |
virtual OptionMap & | getOptionMap () const |
virtual RemoteMethodMap & | getRemoteMethodMap () const |
virtual TransposeProductVariable * | 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 | bbprop () |
compute an approximation to diag(d^2/dinput^2) given diag(d^2/doutput^2), with diag(d^2/dinput^2) ~=~ (doutput/dinput)' diag(d^2/doutput^2) (doutput/dinput) In particular: if 'C' depends on 'y' and 'y' depends on x ... | |
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_ () |
TransposeProductVariable. | |
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_ |
Protected Member Functions | |
void | build_ () |
This does the actual building. | |
Private Types | |
typedef BinaryVariable | inherited |
Matrix product between transpose of matrix1 and matrix2.
Definition at line 53 of file TransposeProductVariable.h.
typedef BinaryVariable PLearn::TransposeProductVariable::inherited [private] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 55 of file TransposeProductVariable.h.
PLearn::TransposeProductVariable::TransposeProductVariable | ( | ) | [inline] |
PLearn::TransposeProductVariable::TransposeProductVariable | ( | Variable * | matrix1, |
Variable * | matrix2 | ||
) |
Definition at line 59 of file TransposeProductVariable.cc.
References build_().
string PLearn::TransposeProductVariable::_classname_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TransposeProductVariable.cc.
OptionList & PLearn::TransposeProductVariable::_getOptionList_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TransposeProductVariable.cc.
RemoteMethodMap & PLearn::TransposeProductVariable::_getRemoteMethodMap_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TransposeProductVariable.cc.
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TransposeProductVariable.cc.
Object * PLearn::TransposeProductVariable::_new_instance_for_typemap_ | ( | ) | [static] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TransposeProductVariable.cc.
StaticInitializer TransposeProductVariable::_static_initializer_ & PLearn::TransposeProductVariable::_static_initialize_ | ( | ) | [static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TransposeProductVariable.cc.
void PLearn::TransposeProductVariable::bbprop | ( | ) | [virtual] |
compute an approximation to diag(d^2/dinput^2) given diag(d^2/doutput^2), with diag(d^2/dinput^2) ~=~ (doutput/dinput)' diag(d^2/doutput^2) (doutput/dinput) In particular: if 'C' depends on 'y' and 'y' depends on x ...
d^2C/dx^2 = d^2C/dy^2 * (dy/dx)^2 + dC/dy * d^2y/dx^2 (diaghessian) (gradient)
Reimplemented from PLearn::Variable.
Definition at line 107 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::Var::length(), PLearn::Variable::matGradient, PLearn::squareProductAcc(), and PLearn::squareProductTransposeAcc().
{ if (input1->diaghessian.length()==0) input1->resizeDiagHessian(); if (input2->diaghessian.length()==0) input2->resizeDiagHessian(); // d^2C/dinput1[k,i]^2 += sum_j input2[k,j]^2 dC/dm[i,j] squareProductTransposeAcc(input1->matGradient, input2->matValue,matGradient); // d^2C/dinput2[k,j]^2 += sum_i input1[k,i]^2 dC/dm[i,j] squareProductAcc(input2->matGradient, input1->matValue,matGradient); }
void PLearn::TransposeProductVariable::bprop | ( | ) | [virtual] |
Implements PLearn::Variable.
Definition at line 98 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::Variable::matGradient, PLearn::productAcc(), and PLearn::productTransposeAcc().
{ // dC/dinput1[k,i] += sum_j input2[k,j] dC/dm[i,j] productTransposeAcc(input1->matGradient, input2->matValue,matGradient); // dC/dinput2[k,j] += sum_i input1[k,i] dC/dm[i,j] productAcc(input2->matGradient, input1->matValue,matGradient); }
void PLearn::TransposeProductVariable::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 66 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::build(), and build_().
{ inherited::build(); build_(); }
void PLearn::TransposeProductVariable::build_ | ( | ) | [protected] |
This does the actual building.
Reimplemented from PLearn::BinaryVariable.
Definition at line 73 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::Var::length(), and PLERROR.
Referenced by build(), and TransposeProductVariable().
{ if (input1 && input2) { // input1 and input2 are (respectively) m1 and m2 from constructor if (input1->length() != input2->length()) PLERROR("In ProductVariable: the size of m1 and m2 are not compatible for a matrix product"); } }
string PLearn::TransposeProductVariable::classname | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TransposeProductVariable.cc.
static const PPath& PLearn::TransposeProductVariable::declaringFile | ( | ) | [inline, static] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 62 of file TransposeProductVariable.h.
: void build_();
TransposeProductVariable * PLearn::TransposeProductVariable::deepCopy | ( | CopiesMap & | copies | ) | const [virtual] |
Reimplemented from PLearn::BinaryVariable.
Definition at line 57 of file TransposeProductVariable.cc.
void PLearn::TransposeProductVariable::fprop | ( | ) | [virtual] |
compute output given input
Implements PLearn::Variable.
Definition at line 91 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::Variable::matValue, and PLearn::transposeProduct().
{ // m[i,j] = sum_k input1[k,i] * input2[k,j] transposeProduct(matValue, input1->matValue,input2->matValue); }
OptionList & PLearn::TransposeProductVariable::getOptionList | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TransposeProductVariable.cc.
OptionMap & PLearn::TransposeProductVariable::getOptionMap | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TransposeProductVariable.cc.
RemoteMethodMap & PLearn::TransposeProductVariable::getRemoteMethodMap | ( | ) | const [virtual] |
Reimplemented from PLearn::Object.
Definition at line 57 of file TransposeProductVariable.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 82 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, and PLearn::Var::width().
void PLearn::TransposeProductVariable::rfprop | ( | ) | [virtual] |
Reimplemented from PLearn::Variable.
Definition at line 129 of file TransposeProductVariable.cc.
References PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::TVec< T >::length(), PLearn::Variable::matRValue, PLearn::BinaryVariable::resizeRValue(), PLearn::Variable::rValue, PLearn::transposeProduct(), and PLearn::transposeProductAcc().
{ if (rValue.length()==0) resizeRValue(); // m[i,j] = sum_k input1[k,i] * input2[k,j] transposeProduct(matRValue, input1->matRValue,input2->matValue); transposeProductAcc(matRValue, input1->matValue,input2->matRValue); }
void PLearn::TransposeProductVariable::symbolicBprop | ( | ) | [virtual] |
compute a piece of new Var graph that represents the symbolic derivative of this Var
Reimplemented from PLearn::Variable.
Definition at line 120 of file TransposeProductVariable.cc.
References PLearn::Variable::g, PLearn::BinaryVariable::input1, PLearn::BinaryVariable::input2, PLearn::product(), and PLearn::productTranspose().
{ // dC/dinput1[k,i] += sum_j input2[k,j] dC/dm[i,j] input1->accg(productTranspose(input2,g)); // dC/dinput2[k,j] += sum_i input1[k,i] dC/dm[i,j] input2->accg(product(input1, g)); }
Reimplemented from PLearn::BinaryVariable.
Definition at line 62 of file TransposeProductVariable.h.