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PLearn 0.1
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#include <ParzenWindow.h>


Public Member Functions | |
| ParzenWindow () | |
| ParzenWindow (real isotropic_sigma) | |
| virtual void | build () |
| Simply calls inherited::build() then build_(). | |
| virtual void | makeDeepCopyFromShallowCopy (CopiesMap &copies) |
| Transforms a shallow copy into a deep copy. | |
| virtual string | classname () const |
| virtual OptionList & | getOptionList () const |
| virtual OptionMap & | getOptionMap () const |
| virtual RemoteMethodMap & | getRemoteMethodMap () const |
| virtual ParzenWindow * | deepCopy (CopiesMap &copies) const |
| virtual void | train () |
| trains the model | |
Static Public Member Functions | |
| static string | _classname_ () |
| Declares name and deepCopy methods. | |
| 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 () |
Public Attributes | |
| real | isotropic_sigma |
Static Public Attributes | |
| static StaticInitializer | _static_initializer_ |
Static Protected Member Functions | |
| static void | declareOptions (OptionList &ol) |
| Declares this class' options. | |
Private Types | |
| typedef GaussMix | inherited |
Private Member Functions | |
| void | build_ () |
| This does the actual building. | |
Definition at line 44 of file ParzenWindow.h.
typedef GaussMix PLearn::ParzenWindow::inherited [private] |
Reimplemented from PLearn::GaussMix.
Definition at line 49 of file ParzenWindow.h.
| PLearn::ParzenWindow::ParzenWindow | ( | ) |
Definition at line 57 of file ParzenWindow.cc.
References PLearn::PLearner::nstages.
: isotropic_sigma(1) { nstages = 1; }
| PLearn::ParzenWindow::ParzenWindow | ( | real | isotropic_sigma | ) |
Definition at line 63 of file ParzenWindow.cc.
: isotropic_sigma(the_isotropic_sigma) { }
| string PLearn::ParzenWindow::_classname_ | ( | ) | [static] |
Declares name and deepCopy methods.
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| OptionList & PLearn::ParzenWindow::_getOptionList_ | ( | ) | [static] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| RemoteMethodMap & PLearn::ParzenWindow::_getRemoteMethodMap_ | ( | ) | [static] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| Object * PLearn::ParzenWindow::_new_instance_for_typemap_ | ( | ) | [static] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| StaticInitializer ParzenWindow::_static_initializer_ & PLearn::ParzenWindow::_static_initialize_ | ( | ) | [static] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| void PLearn::ParzenWindow::build | ( | ) | [virtual] |
Simply calls inherited::build() then build_().
Reimplemented from PLearn::GaussMix.
Definition at line 69 of file ParzenWindow.cc.
References PLearn::GaussMix::build(), and build_().
Referenced by train().
{
inherited::build();
build_();
}


| void PLearn::ParzenWindow::build_ | ( | ) | [private] |
This does the actual building.
Reimplemented from PLearn::GaussMix.
Definition at line 90 of file ParzenWindow.cc.
Referenced by build().
{}

| string PLearn::ParzenWindow::classname | ( | ) | const [virtual] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| void PLearn::ParzenWindow::declareOptions | ( | OptionList & | ol | ) | [static, protected] |
Declares this class' options.
Reimplemented from PLearn::GaussMix.
Definition at line 81 of file ParzenWindow.cc.
References PLearn::OptionBase::buildoption, PLearn::declareOption(), PLearn::GaussMix::declareOptions(), and isotropic_sigma.
{
declareOption(ol,"isotropic_sigma", &ParzenWindow::isotropic_sigma, OptionBase::buildoption,
"Spherical standard deviation parameter (NOTE: old implementation called this sigma_square, but it really was sigma, hence the renaming)");
// Now call the parent class' declareOptions
inherited::declareOptions(ol);
}

| static const PPath& PLearn::ParzenWindow::declaringFile | ( | ) | [inline, static] |
Reimplemented from PLearn::GaussMix.
Definition at line 100 of file ParzenWindow.h.
| ParzenWindow * PLearn::ParzenWindow::deepCopy | ( | CopiesMap & | copies | ) | const [virtual] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| OptionList & PLearn::ParzenWindow::getOptionList | ( | ) | const [virtual] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| OptionMap & PLearn::ParzenWindow::getOptionMap | ( | ) | const [virtual] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| RemoteMethodMap & PLearn::ParzenWindow::getRemoteMethodMap | ( | ) | const [virtual] |
Reimplemented from PLearn::GaussMix.
Definition at line 50 of file ParzenWindow.cc.
| void PLearn::ParzenWindow::makeDeepCopyFromShallowCopy | ( | CopiesMap & | copies | ) | [virtual] |
Transforms a shallow copy into a deep copy.
Reimplemented from PLearn::GaussMix.
Definition at line 93 of file ParzenWindow.cc.
References PLearn::GaussMix::makeDeepCopyFromShallowCopy().
{
inherited::makeDeepCopyFromShallowCopy(copies);
// ### Call deepCopyField on all "pointer-like" fields
// ### that you wish to be deepCopied rather than
// ### shallow-copied.
// ### ex:
// deepCopyField(trainvec, copies);
// ### Remove this line when you have fully implemented this method.
//PLERROR("ParzenWindow::makeDeepCopyFromShallowCopy not fully (correctly) implemented yet!");
}

| void PLearn::ParzenWindow::train | ( | ) | [virtual] |
trains the model
Reimplemented from PLearn::GaussMix.
Definition at line 107 of file ParzenWindow.cc.
References PLearn::GaussMix::alpha, build(), PLearn::GaussMix::center, PLearn::GaussMix::D, PLearn::VMat::getExample(), i, isotropic_sigma, PLearn::GaussMix::L, PLearn::VMat::length(), PLearn::GaussMix::resizeDataBeforeTraining(), PLearn::GaussMix::sigma, PLearn::PLearner::stage, PLearn::PLearner::train_set, and PLearn::GaussMix::type.
{
if(stage<1)
{
int l = train_set.length();
type = "spherical";
L = l;
D = -1;
GaussMix::build(); // rebuild because options chnged
resizeDataBeforeTraining(); // TODO See exactly what this does.
// new code proprly taking sample weights into account
bool has_weights = train_set->hasWeights();
real default_weight = 1.0/l;
Vec target;
real weight = 0;
real weight_sum = 0;
for(int i=0; i<l; i++)
{
// if(i%100==0)
// cerr << "[SEQUENTIAL TRAIN: processing pattern #" << i << "/" << l << "]\n";
Vec input = center(i);
train_set->getExample(i,input,target,weight);
sigma[i] = isotropic_sigma;
if(has_weights)
{
alpha[i] = weight;
weight_sum += weight;
}
else
alpha[i] = default_weight;
// resizeStuffBeforeTraining(); TODO Put back?
}
if(has_weights)
alpha /= weight_sum;
GaussMix::build();
stage = 1;
// precomputeStuff(); TODO Put back?
build(); // rebuild
}
}

Reimplemented from PLearn::GaussMix.
Definition at line 100 of file ParzenWindow.h.
Definition at line 59 of file ParzenWindow.h.
Referenced by declareOptions(), and train().
1.7.4