ConnectionFunctionIdentity.h

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

#ifndef INC_4NEURO_CONNECTIONWEIGHTIDENTITY_H
#define INC_4NEURO_CONNECTIONWEIGHTIDENTITY_H

#include "../settings.h"
#include "ConnectionFunctionGeneral.h"

/**
 *
 */
class ConnectionFunctionIdentity : public ConnectionFunctionGeneral {

private:

    size_t param_idx = 0;

    bool is_unitary = false;


public:

    struct access;

    /**
     *
     */
    LIB4NEURO_API ConnectionFunctionIdentity();

    /**
     *
     */
    LIB4NEURO_API ConnectionFunctionIdentity(size_t pidx);

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

    /**
     *
     * @param weight_gradient
     * @param alpha
     */
    LIB4NEURO_API void eval_partial_derivative(std::vector<double>& parameter_space,
                                               std::vector<double>& weight_gradient,
                                               double alpha) override;
};


#endif //INC_4NEURO_CONNECTIONWEIGHTIDENTITY_H