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EMBase.cpp
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1 /*
2  * Copyright (c) The Shogun Machine Learning Toolbox
3  * Written (w) 2014 Parijat Mazumdar
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30 
33 
34 using namespace shogun;
35 
36 template<typename T> CEMBase<T>::CEMBase()
37 : CSGObject()
38 { }
39 
40 template<typename T> CEMBase<T>::~CEMBase()
41 { }
42 
43 template<typename T> bool CEMBase<T>::iterate_em(int32_t max_iters, float64_t epsilon)
44 {
46  float64_t expect_prev=0;
47  int32_t i=0;
48  bool converge=false;
49  while (i<max_iters)
50  {
51  expect_prev=expect_cur;
52  expectation_step();
53  expect_cur=maximization_step();
54 
55  if ((expect_cur-expect_prev)<epsilon)
56  {
57  converge=true;
58  break;
59  }
60 
61  i++;
62  }
63 
64  return converge;
65 }
static const float64_t MIN_REAL_NUMBER
Definition: Math.h:1429
static const float64_t epsilon
Definition: libbmrm.cpp:24
Class SGObject is the base class of all shogun objects.
Definition: SGObject.h:98
double float64_t
Definition: common.h:50
virtual ~CEMBase()
Definition: EMBase.cpp:40
bool iterate_em(int32_t max_iters=10000, float64_t epsilon=1e-8)
Definition: EMBase.cpp:43

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