ConnectionFunctionGeneral.h

/**
 * DESCRIPTION OF THE FILE
 *
 * @author Michal Kravčenko
 * @date 14.6.18 -
 */

#ifndef INC_4NEURO_CONNECTIONWEIGHT_H
#define INC_4NEURO_CONNECTIONWEIGHT_H

#include "../settings.h"

#include <functional>
#include <vector>

class ConnectionFunctionGeneral {

protected:

    /**
     *
     */
    std::vector<size_t> param_indices;

public:

    /**
     * Struct used to access private properties from
     * the serialization function
     */
    struct access;

    /**
     *
     */
    LIB4NEURO_API ConnectionFunctionGeneral();

    /**
     *
     * @param param_count
     * @param f
     */
    LIB4NEURO_API ConnectionFunctionGeneral(std::vector<size_t>& param_indices,
                                            std::string& function_string);

    /**
     *
     */
    LIB4NEURO_API virtual ~ConnectionFunctionGeneral();


    /**
     *
     * @return
     */
    LIB4NEURO_API virtual double eval(std::vector<double>& parameter_space);

    /**
     * Performs partial derivative of this transfer function according to all parameters. Adds the values multiplied
     * by alpha to the corresponding gradient vector
     */
    LIB4NEURO_API virtual void eval_partial_derivative(std::vector<double>& parameter_space,
                                                       std::vector<double>& weight_gradient,
                                                       double alpha);

};

#endif //INC_4NEURO_CONNECTIONWEIGHT_H