scorer.h

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/* FEAT
copyright 2017 William La Cava
license: GNU/GPL v3
*/
#ifndef SCORER_H
#define SCORER_H
// internal includes
#include "metrics.h"
using namespace shogun;
using Eigen::Map;
 
// code to evaluate GP programs.
namespace FT{
 
    namespace Eval{
 
        typedef float (*funcPointer)(const VectorXf&, 
                                     const shared_ptr<CLabels>&, 
                                     VectorXf&,
                                     const vector<float>&);
 
        class Scorer
        {
            public:
                /* // pointer to scoring function */
                /* float (* score_fn)(const VectorXf&, */ 
                /*                 const shared_ptr<CLabels>&, */ 
                /*                 VectorXf&, */ 
                /*                 const vector<float>&); */    
 
                std::map<string, funcPointer> score_hash;
 
                Scorer(string scorer="");
 
                void set_scorer(string scorer);
                /* void set_scorer(string scorer); */
                float score(const VectorXf& y_true, 
                               const shared_ptr<CLabels>& yhat,
                               VectorXf& loss, 
                               const vector<float>& w);
                float score(const VectorXf& y_true, 
                               const shared_ptr<CLabels>& yhat,
                               vector<float> w=vector<float>());
 
                string scorer;
        };
    }
}
#endif