| 1 |
bendavid |
1.1 |
|
| 2 |
|
|
#ifndef ROOT_GBRForest
|
| 3 |
|
|
#define ROOT_GBRForest
|
| 4 |
|
|
|
| 5 |
|
|
//////////////////////////////////////////////////////////////////////////
|
| 6 |
|
|
// //
|
| 7 |
|
|
// GBRForest //
|
| 8 |
|
|
// //
|
| 9 |
|
|
// A fast minimal implementation of Gradient-Boosted Regression Trees //
|
| 10 |
|
|
// which has been especially optimized for size on disk and in memory. //
|
| 11 |
|
|
// //
|
| 12 |
|
|
// Designed to built from TMVA-trained trees, but could also be //
|
| 13 |
|
|
// generalized to otherwise-trained trees, classification, //
|
| 14 |
|
|
// or other boosting methods in the future //
|
| 15 |
|
|
// //
|
| 16 |
|
|
// Josh Bendavid - MIT //
|
| 17 |
|
|
//////////////////////////////////////////////////////////////////////////
|
| 18 |
|
|
|
| 19 |
|
|
#include "TNamed.h"
|
| 20 |
|
|
#include <vector>
|
| 21 |
|
|
#include "GBRTree.h"
|
| 22 |
|
|
|
| 23 |
|
|
|
| 24 |
|
|
namespace TMVA {
|
| 25 |
|
|
class MethodBDT;
|
| 26 |
|
|
}
|
| 27 |
|
|
|
| 28 |
|
|
class GBRForest : public TNamed {
|
| 29 |
|
|
|
| 30 |
|
|
public:
|
| 31 |
|
|
|
| 32 |
|
|
GBRForest();
|
| 33 |
|
|
GBRForest(const TMVA::MethodBDT *bdt);
|
| 34 |
|
|
virtual ~GBRForest();
|
| 35 |
|
|
|
| 36 |
|
|
Double_t GetResponse(const Float_t* vector) const;
|
| 37 |
|
|
|
| 38 |
|
|
std::vector<GBRTree*> &Trees() { return fTrees; }
|
| 39 |
|
|
|
| 40 |
|
|
protected:
|
| 41 |
|
|
Double_t fInitialResponse;
|
| 42 |
|
|
std::vector<GBRTree*> fTrees;
|
| 43 |
|
|
|
| 44 |
|
|
ClassDef(GBRForest,1) // Node for the Decision Tree
|
| 45 |
|
|
};
|
| 46 |
|
|
|
| 47 |
|
|
//_______________________________________________________________________
|
| 48 |
|
|
inline Double_t GBRForest::GetResponse(const Float_t* vector) const {
|
| 49 |
|
|
Double_t response = fInitialResponse;
|
| 50 |
|
|
for (std::vector<GBRTree*>::const_iterator it=fTrees.begin(); it!=fTrees.end(); ++it) {
|
| 51 |
|
|
response += (*it)->GetResponse(vector);
|
| 52 |
|
|
}
|
| 53 |
|
|
return response;
|
| 54 |
|
|
}
|
| 55 |
|
|
|
| 56 |
|
|
#endif
|
