ConnectionFunctionGeneral.h

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

#ifndef INC_4NEURO_CONNECTIONWEIGHT_H
#define INC_4NEURO_CONNECTIONWEIGHT_H

#include <functional>
#include <vector>

class ConnectionFunctionGeneral {
protected:
    /**
     *
     */
    std::vector<double> * weight_array = nullptr;

    /**
     *
     */
    std::vector<unsigned int> *param_indices = nullptr;

public:

    /**
     *
     */
    ConnectionFunctionGeneral();

    /**
     *
     * @param param_count
     * @param f
     */
    ConnectionFunctionGeneral(std::vector<double>* w_array, std::vector<unsigned int> &param_indices, std::string &function_string);

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


    /**
     *
     * @return
     */
    virtual double eval( );

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


};


#endif //INC_4NEURO_CONNECTIONWEIGHT_H