详细描述
class ChiSquareDistance
This implementation of 
distance extends the concept of metric to negative values.
![\[\displaystyle d(\bf{x},\bf{x'}) = \sum_{i=1}^{n}\frac{(x_{i}-x'_{i})^2} {|x_{i}|+|x'_{i}|} \quad \bf{x},\bf{x'} \in R^{n} \]](form_50.png)
- 参见:
- K. Rieck, P. Laskov. Linear-Time Computation of Similarity Measures for Sequential Data. Journal of Machine Learning Research, 9:23--48,2008.
在文件ChiSquareDistance.h第33行定义。
继承图，类CChiSquareDistance
公有成员 | |
| CChiSquareDistance () | |
| CChiSquareDistance (CSimpleFeatures< float64_t > *l, CSimpleFeatures< float64_t > *r) | |
| virtual | ~CChiSquareDistance () |
| virtual bool | init (CFeatures *l, CFeatures *r) |
| virtual void | cleanup () |
| virtual EDistanceType | get_distance_type () |
| virtual const char * | get_name () const |
保护成员 | |
| virtual float64_t | compute (int32_t idx_a, int32_t idx_b) |
构造及析构函数文档
default constructor
在文件ChiSquareDistance.cpp第20行定义。
| CChiSquareDistance | ( | CSimpleFeatures< float64_t > * | l, | |
| CSimpleFeatures< float64_t > * | r | |||
| ) |
constructor
- 参数:
-
l features of left-hand side r features of right-hand side
在文件ChiSquareDistance.cpp第25行定义。
| ~CChiSquareDistance | ( | ) | [virtual] |
在文件ChiSquareDistance.cpp第31行定义。
成员函数文档
| void cleanup | ( | ) | [virtual] |
| float64_t compute | ( | int32_t | idx_a, | |
| int32_t | idx_b | |||
| ) | [protected, virtual] |
compute distance for features a and b idx_{a,b} denote the index of the feature vectors in the corresponding feature object
实现了CDistance。
在文件ChiSquareDistance.cpp第47行定义。
| virtual EDistanceType get_distance_type | ( | ) | [virtual] |
| virtual const char* get_name | ( | ) | const [virtual] |
init distance
- 参数:
-
l features of left-hand side r features of right-hand side
- 返回:
- if init was successful
重载CSimpleDistance< float64_t >。
在文件ChiSquareDistance.cpp第36行定义。
该类的文档由以下文件生成：