The well known Gaussian kernel (swiss army knife for SVMs) on dense real valued features.
It is computed as
where is the kernel width.
在文件GaussianKernel.h第31行定义。
公有成员 | |
CGaussianKernel () | |
CGaussianKernel (int32_t size, float64_t width) | |
CGaussianKernel (CSimpleFeatures< float64_t > *l, CSimpleFeatures< float64_t > *r, float64_t width, int32_t size=10) | |
virtual | ~CGaussianKernel () |
virtual bool | init (CFeatures *l, CFeatures *r) |
virtual EKernelType | get_kernel_type () |
virtual const char * | get_name () const |
保护成员 | |
virtual float64_t | compute (int32_t idx_a, int32_t idx_b) |
保护属性 | |
float64_t | width |
CGaussianKernel | ( | ) |
default constructor
在文件GaussianKernel.cpp第24行定义。
CGaussianKernel | ( | int32_t | size, |
float64_t | width | ||
) |
CGaussianKernel | ( | CSimpleFeatures< float64_t > * | l, |
CSimpleFeatures< float64_t > * | r, | ||
float64_t | width, | ||
int32_t | size = 10 |
||
) |
constructor
l | features of left-hand side |
r | features of right-hand side |
width | width |
size | cache size |
在文件GaussianKernel.cpp第35行定义。
~CGaussianKernel | ( | ) | [virtual] |
在文件GaussianKernel.cpp第42行定义。
float64_t compute | ( | int32_t | idx_a, |
int32_t | idx_b | ||
) | [protected, virtual] |
compute kernel function for features a and b idx_{a,b} denote the index of the feature vectors in the corresponding feature object
idx_a | index a |
idx_b | index b |
实现了CKernel。
在文件GaussianKernel.cpp第52行定义。
virtual EKernelType get_kernel_type | ( | ) | [virtual] |
virtual const char* get_name | ( | ) | const [virtual] |
initialize kernel
l | features of left-hand side |
r | features of right-hand side |
在文件GaussianKernel.cpp第46行定义。
width
在文件GaussianKernel.h第111行定义。