SHOGUN  6.1.3
NesterovMomentumCorrection.cpp
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1 /*
2  * Copyright (c) The Shogun Machine Learning Toolbox
3  * Written (w) 2015 Wu Lin
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31 
33 
34 using namespace shogun;
35 
37  index_t idx)
38 {
39  REQUIRE(idx>=0 && idx<m_previous_descend_direction.vlen,"The index (%d) is invalid\n", idx);
41  m_previous_descend_direction[idx]=tmp-negative_descend_direction;
42  DescendPair pair;
43  pair.delta=m_previous_descend_direction[idx];
44  pair.descend_direction=(1.0+m_weight)*pair.delta-tmp;
45  return pair;
46 }
47 
48 void NesterovMomentumCorrection::init()
49 {
50  m_weight=0.9;
51 }
virtual DescendPair get_corrected_descend_direction(float64_t negative_descend_direction, index_t idx)
int32_t index_t
Definition: common.h:72
#define REQUIRE(x,...)
Definition: SGIO.h:181
double float64_t
Definition: common.h:60
SGVector< float64_t > m_previous_descend_direction
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:18
index_t vlen
Definition: SGVector.h:571

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