32 #ifndef FIRSTORDERSTOCHASTICCOSTFUNCTION_H
33 #define FIRSTORDERSTOCHASTICCOSTFUNCTION_H
virtual void begin_sample()=0
The first order stochastic cost function base class.
virtual SGVector< float64_t > get_gradient()=0
The first order cost function base class.
virtual float64_t get_cost()=0
all of classes and functions are contained in the shogun namespace
virtual bool next_sample()=0
virtual ~FirstOrderStochasticCostFunction()