PLearn 0.1
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if values = [x1,x2,...,x10], the resulting variable is [(x1+x2)/2,(x2+x3)/2, ... More...
#include <InterValuesVariable.h>
Public Member Functions | |
InterValuesVariable () | |
Default constructor for persistence. | |
InterValuesVariable (Variable *values) | |
virtual string | classname () const |
virtual OptionList & | getOptionList () const |
virtual OptionMap & | getOptionMap () const |
virtual RemoteMethodMap & | getRemoteMethodMap () const |
virtual InterValuesVariable * | 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 () |
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_ () |
InterValuesVariable. | |
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_ () |
Object-specific post-constructor. | |
Private Types | |
typedef UnaryVariable | inherited |
if values = [x1,x2,...,x10], the resulting variable is [(x1+x2)/2,(x2+x3)/2, ...
(x9+x10)/2]
Definition at line 54 of file InterValuesVariable.h.
typedef UnaryVariable PLearn::InterValuesVariable::inherited [private] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 56 of file InterValuesVariable.h.
PLearn::InterValuesVariable::InterValuesVariable | ( | ) | [inline] |
Default constructor for persistence.
Definition at line 60 of file InterValuesVariable.h.
Referenced by symbolicBprop().
{}
PLearn::InterValuesVariable::InterValuesVariable | ( | Variable * | values | ) |
Definition at line 60 of file InterValuesVariable.cc.
References build_().
string PLearn::InterValuesVariable::_classname_ | ( | ) | [static] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
OptionList & PLearn::InterValuesVariable::_getOptionList_ | ( | ) | [static] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
RemoteMethodMap & PLearn::InterValuesVariable::_getRemoteMethodMap_ | ( | ) | [static] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
Object * PLearn::InterValuesVariable::_new_instance_for_typemap_ | ( | ) | [static] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
StaticInitializer InterValuesVariable::_static_initializer_ & PLearn::InterValuesVariable::_static_initialize_ | ( | ) | [static] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
void PLearn::InterValuesVariable::bprop | ( | ) | [virtual] |
Nothing to do by default.
Reimplemented from PLearn::UnaryVariable.
Definition at line 103 of file InterValuesVariable.cc.
References PLearn::Variable::gradientdata, i, PLearn::UnaryVariable::input, and PLearn::Variable::nelems().
{ real* prev_dx = &input->gradientdata[0]; for (int i=0;i<nelems();i++) { real* next_dx = &input->gradientdata[i+1]; *prev_dx += 0.5 * gradientdata[i]; *next_dx += 0.5 * gradientdata[i]; prev_dx = next_dx; } }
void PLearn::InterValuesVariable::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 67 of file InterValuesVariable.cc.
References PLearn::UnaryVariable::build(), and build_().
{ inherited::build(); build_(); }
void PLearn::InterValuesVariable::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 74 of file InterValuesVariable.cc.
References PLearn::UnaryVariable::input, and PLERROR.
Referenced by build(), and InterValuesVariable().
{ if(input && !input->isColumnVec()) PLERROR("In InterValuesVariable: input must be a column vector (single column matrix)"); }
string PLearn::InterValuesVariable::classname | ( | ) | const [virtual] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
static const PPath& PLearn::InterValuesVariable::declaringFile | ( | ) | [inline, static] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 63 of file InterValuesVariable.h.
: void build_();
InterValuesVariable * PLearn::InterValuesVariable::deepCopy | ( | CopiesMap & | copies | ) | const [virtual] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
void PLearn::InterValuesVariable::fprop | ( | ) | [virtual] |
Nothing to do by default.
Reimplemented from PLearn::UnaryVariable.
Definition at line 91 of file InterValuesVariable.cc.
References i, PLearn::UnaryVariable::input, PLearn::Variable::nelems(), and PLearn::Variable::valuedata.
{ real prev_x = input->valuedata[0]; for (int i=0;i<nelems();i++) { real next_x = input->valuedata[i+1]; valuedata[i] = 0.5 * (prev_x + next_x); prev_x = next_x; } }
OptionList & PLearn::InterValuesVariable::getOptionList | ( | ) | const [virtual] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
OptionMap & PLearn::InterValuesVariable::getOptionMap | ( | ) | const [virtual] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.cc.
RemoteMethodMap & PLearn::InterValuesVariable::getRemoteMethodMap | ( | ) | const [virtual] |
Reimplemented from PLearn::UnaryVariable.
Definition at line 58 of file InterValuesVariable.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 81 of file InterValuesVariable.cc.
References PLearn::UnaryVariable::input, and PLearn::Var::length().
void PLearn::InterValuesVariable::symbolicBprop | ( | ) | [virtual] |
compute a piece of new Var graph that represents the symbolic derivative of this Var
Reimplemented from PLearn::Variable.
Definition at line 116 of file InterValuesVariable.cc.
References PLearn::Variable::g, PLearn::UnaryVariable::input, InterValuesVariable(), PLearn::vconcat(), and zero.
{ Var zero(1); Var g1 = new InterValuesVariable(vconcat(zero & g & (VarArray)zero)); input->accg(g1); }
Reimplemented from PLearn::UnaryVariable.
Definition at line 63 of file InterValuesVariable.h.