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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 , 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) |
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 > | |
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 > | |
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 > | |
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 > | |
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 > | |
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 > | |
detail::VisitorNode< A, detail::VisitorNode< B, detail::VisitorNode< C > > > | create_visitor (A &a, B &b, C &c) |
template<class A , class B > | |
detail::VisitorNode< A, detail::VisitorNode< B > > | create_visitor (A &a, B &b) |
template<class A > | |
detail::VisitorNode< A > | create_visitor (A &a) |
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
© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) |
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