Computes the standard polynomial kernel on dense real valued features.
Formally, it computes
Note that additional normalisation is applied, i.e.
在文件PolyKernel.h第34行定义。

公有成员 | |
| CPolyKernel (CSimpleFeatures< float64_t > *l, CSimpleFeatures< float64_t > *r, int32_t d, bool inhom, int32_t size=10) | |
| CPolyKernel (int32_t size, int32_t degree, bool inhomogene=true) | |
| virtual | ~CPolyKernel () |
| virtual bool | init (CFeatures *l, CFeatures *r) |
| virtual void | cleanup () |
| 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 | |
| int32_t | degree |
| bool | inhomogene |
| CPolyKernel | ( | CSimpleFeatures< float64_t > * | l, | |
| CSimpleFeatures< float64_t > * | r, | |||
| int32_t | d, | |||
| bool | inhom, | |||
| int32_t | size = 10 | |||
| ) |
constructor
| l | features of left-hand side | |
| r | features of right-hand side | |
| d | degree | |
| inhom | is inhomogeneous | |
| size | cache size |
在文件PolyKernel.cpp第26行定义。
| CPolyKernel | ( | int32_t | size, | |
| int32_t | degree, | |||
| bool | inhomogene = true | |||
| ) |
| ~CPolyKernel | ( | ) | [virtual] |
在文件PolyKernel.cpp第34行定义。
| void cleanup | ( | ) | [virtual] |
| 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PolyKernel.cpp第50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PolyKernel.cpp第39行定义。
int32_t degree [protected] |
degree
在文件PolyKernel.h第94行定义。
bool inhomogene [protected] |
if kernel is inhomogeneous
在文件PolyKernel.h第96行定义。