NICE_VisLearning/classifier/kernelclassifier/KCGPOneClass.h

/** 
* @file KCGPOneClass.h
* @brief One-Class Gaussian Process Regression for Classification
* @author Erik Rodner + Mi.Ke.
* @date 12/03/2010

*/
#ifndef KCGPONECLASSINCLUDE
#define KCGPONECLASSINCLUDE

#include "vislearning/classifier/classifierbase/KernelClassifier.h"
#include "vislearning/math/kernels/ParameterizedKernel.h"

#include "vislearning/regression/regressionbase/RegressionAlgorithmKernel.h"

#undef ROADWORKS
#define ROADWORKS fthrow(Exception, "Persistent interface not implemented!");

#define VARIANCE_DETECTION_MODE 1
#define MEAN_DETECTION_MODE 2

namespace OBJREC {
 
/** Gaussian Process Regression for One-Class Classification  (actually same as binary, don't use parameter optimization!!!)*/
class KCGPOneClass : public KernelClassifier
{

    protected:
		RegressionAlgorithmKernel *regressionAlgorithm;
		NICE::Matrix InverseKernelMatrix; //only used when 'variance mode' is used and computeInverse=true
		KernelData *kernelData; ////only used when 'variance mode' is used and computeInverse=false
		NICE::Vector y;
		int mode;
		bool computeInverse;
		double staticNoise;

    public:
  
	/** simple constructor */
	KCGPOneClass( const NICE::Config *conf, Kernel *kernel = NULL, const std::string & section = "OneClassGP" );

	/** copy constructor */
	KCGPOneClass( const KCGPOneClass & src );
      
	/** simple destructor */
	virtual ~KCGPOneClass();
  	
	/** teach the classifier with a kernel matrix and the corresponding class labels @param y ! */
	void teach ( KernelData *kernelData, const NICE::Vector & y );
  	
	/** classify an example by using its kernel values with the training set,
		be careful with the order in @param kernelVector */
	virtual ClassificationResult classifyKernel ( const NICE::Vector & kernelVector, double kernelSelf ) const;
  
  	/** clone this object */
	KCGPOneClass *clone() const;

	void restore(std::istream&, int) { ROADWORKS };
	void store(std::ostream&, int) const { ROADWORKS };
	void clear() { ROADWORKS };
};


}

#undef ROADWORKS

#endif