vigra::rf::visitors Namespace Reference

Visitors to extract information during training of vigra::RandomForest version 2. More...

Classes
class	CompleteOOBInfo
class	CorrelationVisitor
class	OnlineLearnVisitor
class	OOB_Error
class	OOB_PerTreeError
class	RandomForestProgressVisitor
class	StopVisiting
class	VariableImportanceVisitor
class	VisitorBase

Functions
template<class A >
detail::VisitorNode< A >	create_visitor (A &a)
template<class A , class B >
detail::VisitorNode< A, detail::VisitorNode< B > >	create_visitor (A &a, B &b)
template<class A , class B , class C >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C > > >	create_visitor (A &a, B &b, C &c)
template<class A , class B , class C , class D >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D > > > >	create_visitor (A &a, B &b, C &c, D &d)
template<class A , class B , class C , class D , class E >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D, detail::VisitorNode< E > > > > >	create_visitor (A &a, B &b, C &c, D &d, E &e)
template<class A , class B , class C , class D , class E , class F >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D, detail::VisitorNode< E, detail::VisitorNode< F > > > > > >	create_visitor (A &a, B &b, C &c, D &d, E &e, F &f)
template<class A , class B , class C , class D , class E , class F , class G >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D, detail::VisitorNode< E, detail::VisitorNode< F, detail::VisitorNode< G > > > > > > >	create_visitor (A &a, B &b, C &c, D &d, E &e, F &f, G &g)
template<class A , class B , class C , class D , class E , class F , class G , class H >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D, detail::VisitorNode< E, detail::VisitorNode< F, detail::VisitorNode< G, detail::VisitorNode< H > > > > > > > >	create_visitor (A &a, B &b, C &c, D &d, E &e, F &f, G &g, H &h)
template<class A , class B , class C , class D , class E , class F , class G , class H , class I >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D, detail::VisitorNode< E, detail::VisitorNode< F, detail::VisitorNode< G, detail::VisitorNode< H, detail::VisitorNode< I > > > > > > > > >	create_visitor (A &a, B &b, C &c, D &d, E &e, F &f, G &g, H &h, I &i)
template<class A , class B , class C , class D , class E , class F , class G , class H , class I , class J >
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C, detail::VisitorNode< D, detail::VisitorNode< E, detail::VisitorNode< F, detail::VisitorNode< G, detail::VisitorNode< H, detail::VisitorNode< I, detail::VisitorNode< J > > > > > > > > > >	create_visitor (A &a, B &b, C &c, D &d, E &e, F &f, G &g, H &h, I &i, J &j)

Detailed Description

Visitors to extract information during training of vigra::RandomForest version 2.

This namespace contains all classes and methods related to extracting information during learning of the random forest. All Visitors share the same interface defined in visitors::VisitorBase. The member methods are invoked at certain points of the main code in the order they were supplied.

For the Random Forest the Visitor concept is implemented as a statically linked list (Using templates). Each Visitor object is encapsulated in a detail::VisitorNode object. The VisitorNode object calls the Next Visitor after one of its visit() methods have terminated.

To simplify usage create_visitor() factory methods are supplied. Use the create_visitor() method to supply visitor objects to the RandomForest::learn() method. It is possible to supply more than one visitor. They will then be invoked in serial order.

The calculated information are stored as public data members of the class. - see documentation of the individual visitors

While creating a new visitor the new class should therefore publicly inherit from this class (i.e.: see visitors::OOB_Error).

typedef xxx feature_t \\ replace xxx with whichever type
typedef yyy label_t   \\ meme chose.
MultiArrayView<2, feature_t> f = get_some_features();
MultiArrayView<2, label_t>   l = get_some_labels();
RandomForest<> rf()

//calculate OOB Error
visitors::OOB_Error oob_v;
//calculate Variable Importance
visitors::VariableImportanceVisitor varimp_v;

double oob_error = rf.learn(f, l, visitors::create_visitor(oob_v, varimp_v);
//the data can be found in the attributes of oob_v and varimp_v now

Function Documentation

detail::VisitorNode<A> vigra::rf::visitors::create_visitor

(

A &

a

)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B> > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C> > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D> > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D, detail::VisitorNode<E> > > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d,
		E &	e
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D, detail::VisitorNode<E, detail::VisitorNode<F> > > > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d,
		E &	e,
		F &	f
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D, detail::VisitorNode<E, detail::VisitorNode<F, detail::VisitorNode<G> > > > > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d,
		E &	e,
		F &	f,
		G &	g
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D, detail::VisitorNode<E, detail::VisitorNode<F, detail::VisitorNode<G, detail::VisitorNode<H> > > > > > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d,
		E &	e,
		F &	f,
		G &	g,
		H &	h
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D, detail::VisitorNode<E, detail::VisitorNode<F, detail::VisitorNode<G, detail::VisitorNode<H, detail::VisitorNode<I> > > > > > > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d,
		E &	e,
		F &	f,
		G &	g,
		H &	h,
		I &	i
	)

factory method to to be used with RandomForest::learn()

detail::VisitorNode<A, detail::VisitorNode<B, detail::VisitorNode<C, detail::VisitorNode<D, detail::VisitorNode<E, detail::VisitorNode<F, detail::VisitorNode<G, detail::VisitorNode<H, detail::VisitorNode<I, detail::VisitorNode<J> > > > > > > > > > vigra::rf::visitors::create_visitor	(	A &	a,
		B &	b,
		C &	c,
		D &	d,
		E &	e,
		F &	f,
		G &	g,
		H &	h,
		I &	i,
		J &	j
	)

factory method to to be used with RandomForest::learn()