/usr/include/root/TMVA/VariablePCATransform.h is in libroot-tmva-dev 5.34.30-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Author: Andreas Hoecker, Joerg Stelzer, Helge Voss
/**********************************************************************************
* Project: TMVA - a Root-integrated toolkit for multivariate data analysis *
* Package: TMVA *
* Class : VariablePCATransform *
* Web : http://tmva.sourceforge.net *
* *
* Description: *
* Principal value composition of input variables *
* *
* Authors (alphabetical): *
* Andreas Hoecker <Andreas.Hocker@cern.ch> - CERN, Switzerland *
* Peter Speckmayer <Peter.Speckmayer@cern.ch> - CERN, Switzerland *
* Joerg Stelzer <Joerg.Stelzer@cern.ch> - CERN, Switzerland *
* Helge Voss <Helge.Voss@cern.ch> - MPI-K Heidelberg, Germany *
* *
* Copyright (c) 2005: *
* CERN, Switzerland *
* U. of Victoria, Canada *
* MPI-K Heidelberg, Germany *
* *
* Redistribution and use in source and binary forms, with or without *
* modification, are permitted according to the terms listed in LICENSE *
* (http://tmva.sourceforge.net/LICENSE) *
**********************************************************************************/
#ifndef ROOT_TMVA_VariablePCATransform
#define ROOT_TMVA_VariablePCATransform
//////////////////////////////////////////////////////////////////////////
// //
// VariablePCATransform //
// //
// Linear interpolation class //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TPrincipal
#include "TPrincipal.h"
#endif
#ifndef ROOT_TMVA_VariableTransformBase
#include "TMVA/VariableTransformBase.h"
#endif
namespace TMVA {
class VariablePCATransform : public VariableTransformBase {
public:
VariablePCATransform( DataSetInfo& dsi );
virtual ~VariablePCATransform( void );
void Initialize();
Bool_t PrepareTransformation (const std::vector<Event*>&);
virtual const Event* Transform(const Event* const, Int_t cls ) const;
virtual const Event* InverseTransform(const Event* const, Int_t cls ) const;
void WriteTransformationToStream ( std::ostream& ) const;
void ReadTransformationFromStream( std::istream&, const TString& );
virtual void AttachXMLTo(void* parent);
virtual void ReadFromXML( void* trfnode );
// writer of function code
virtual void MakeFunction( std::ostream& fout, const TString& fncName, Int_t part, UInt_t trCounter, Int_t cls );
private:
void CalculatePrincipalComponents( const std::vector< Event*>& );
void X2P( std::vector<Float_t>&, const std::vector<Float_t>&, Int_t cls ) const;
void P2X( std::vector<Float_t>&, const std::vector<Float_t>&, Int_t cls ) const;
// store relevant parts of PCA locally
std::vector<TVectorD*> fMeanValues; // mean values
std::vector<TMatrixD*> fEigenVectors; // eigenvectors
ClassDef(VariablePCATransform,0) // Variable transformation: Principal Value Composition
};
} // namespace TMVA
#endif
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