VarFunc.hh
2.34 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
/*
* VarFunc.hh
*
* Created on: Jun 22, 2018
* Author: benjamin
*/
#ifndef VARFUNC_HH_
#define VARFUNC_HH_
#include "AbstractFunc.hh"
#include "Toolbox.hh"
namespace AMDA {
namespace Parameters {
namespace StatisticFunctions {
template <typename InputElemType, typename OutputElemType>
OutputElemType computeVar(std::list<std::pair<double,InputElemType>>& mem, OutputElemType& nanVal) {
OutputElemType result = nanVal;
if (mem.empty()) {
return result;
}
result << ElemNull();
OutputElemType sum = result;
int n = 0;
for (auto val : mem) {
if (isNAN(val.second))
continue;
sum = sum+val.second;
result = result+StatisticFunctions::square(val.second);
++n;
}
if (n == 0) {
result << NotANumber();
return result;
}
result = 1./n*result;
OutputElemType mean = sum/n;
result = result - StatisticFunctions::square(mean);
return result;
}
/**
* @class VarFunc
* @brief
* @details This class implements AbstractFunc.
*/
template <typename InputElemType, typename OutputElemType>
class VarFunc : public ClassicAbstractFunc<InputElemType,OutputElemType> {
public:
/**
* @brief Constructor.
*/
VarFunc(Process& pProcess, TimeIntervalListSPtr pTimeIntervalList, ParamDataSpec<InputElemType>& paramInput, double windowtime)
: ClassicAbstractFunc<InputElemType,OutputElemType>(pProcess, pTimeIntervalList, paramInput, windowtime) {
}
virtual ~VarFunc() {
}
OutputElemType compute() {
return computeVar(ClassicAbstractFunc<InputElemType,OutputElemType>::_mem, ClassicAbstractFunc<InputElemType,OutputElemType>::_nanVal);
}
};
/**
* @class VarFuncSm
* @brief
* @details This class implements AbstractFunc.
*/
template <typename InputElemType, typename OutputElemType>
class VarSmFunc : public SmAbstractFunc<InputElemType,OutputElemType> {
public:
/**
* @brief Constructor.
*/
VarSmFunc(Process& pProcess, TimeIntervalListSPtr pTimeIntervalList, ParamDataSpec<InputElemType>& paramInput, double windowtime)
: SmAbstractFunc<InputElemType,OutputElemType>(pProcess, pTimeIntervalList, paramInput, windowtime) {
}
virtual ~VarSmFunc() {
}
OutputElemType compute() {
return computeVar(SmAbstractFunc<InputElemType,OutputElemType>::_mem, SmAbstractFunc<InputElemType,OutputElemType>::_nanVal);
}
};
} /* namespace StatisticFunctions */
} /* namespace Parameters */
} /* namespace AMDA */
#endif /* MINFUNC_HH_ */