57 REQUIRE(variable_reference.
vlen>0,
"variable_reference must set\n");
59 "The length of variable_reference (%d) and the length of gradient (%d) do not match\n",
60 variable_reference.
vlen,raw_negative_descend_direction.
vlen);
65 if(momentum_correction)
72 for(
index_t idx=0; idx<variable_reference.
vlen; idx++)
75 variable_reference[idx], raw_negative_descend_direction[idx], idx, learning_rate);
79 negative_descend_direction, idx);
80 variable_reference[idx]+=pair.descend_direction;
84 variable_reference[idx]-=negative_descend_direction;
89 void DescendUpdaterWithCorrection::init()
virtual void initialize_previous_direction(index_t len)
DescendCorrection * m_correction
virtual void set_descend_correction(DescendCorrection *correction)
virtual ~DescendUpdaterWithCorrection()
virtual DescendPair get_corrected_descend_direction(float64_t negative_descend_direction, index_t idx)=0
Class SGObject is the base class of all shogun objects.
virtual void update_variable(SGVector< float64_t > variable_reference, SGVector< float64_t > raw_negative_descend_direction, float64_t learning_rate)
virtual float64_t get_negative_descend_direction(float64_t variable, float64_t raw_negative_descend_direction, index_t idx, float64_t learning_rate)=0
This is a base class for descend based correction method.
all of classes and functions are contained in the shogun namespace
This is a base class for momentum correction methods.
virtual bool is_initialized()