/usr/include/shogun/evaluation/MeanSquaredError.h is in libshogun-dev 1.1.0-4ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | /*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Written (W) 2011 Sergey Lisitsyn
* Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
*/
#ifndef MEANSQUAREDERROR_H_
#define MEANSQUAREDERROR_H_
#include <shogun/evaluation/Evaluation.h>
#include <shogun/features/Labels.h>
namespace shogun
{
class CLabels;
/** @brief Class MeanSquaredError
* used to compute an error of regression model.
*
* Formally, for real labels \f$ L,R, |L|=|R|\f$ mean squared
* error (MSE) is estimated as
*
* \f[
* \frac{1}{|L|} \sum_{i=1}^{|L|} (L_i - R_i)^2
* \f]
*
*/
class CMeanSquaredError: public CEvaluation
{
public:
/** constructor */
CMeanSquaredError() : CEvaluation() {};
/** destructor */
virtual ~CMeanSquaredError() {};
/** evaluate mean squared error
* @param predicted labels for evaluating
* @param ground_truth labels assumed to be correct
* @return mean squared error
*/
virtual float64_t evaluate(CLabels* predicted, CLabels* ground_truth);
inline EEvaluationDirection get_evaluation_direction()
{
return ED_MINIMIZE;
}
/** get name */
virtual inline const char* get_name() const { return "MeanSquaredError"; }
};
}
#endif /* MEANSQUAREDERROR_H_ */
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