公有成员 | 保护成员 | 保护属性

CPolyMatchWordStringKernel类参考


详细描述

The class PolyMatchWordStringKernel computes a variant of the polynomial kernel on word-features.

It makes sense for strings of same length mapped to word features and is computed as

\[ k({\bf x},{\bf x'})= (\sum_{i=0}^L I(x_i=x'_i)+c)^d \]

where I is the indicator function which evaluates to 1 if its argument is true and to 0 otherwise.

Note that additional normalisation is applied, i.e.

\[ k'({\bf x}, {\bf x'})=\frac{k({\bf x}, {\bf x'})}{\sqrt{k({\bf x}, {\bf x})k({\bf x'}, {\bf x'})}} \]

在文件PolyMatchWordStringKernel.h38行定义。

继承图,类CPolyMatchWordStringKernel
Inheritance graph
[图例]

所有成员的列表。

公有成员

 CPolyMatchWordStringKernel (int32_t size, int32_t degree, bool inhomogene)
 CPolyMatchWordStringKernel (CStringFeatures< uint16_t > *l, CStringFeatures< uint16_t > *r, int32_t degree, bool inhomogene)
virtual ~CPolyMatchWordStringKernel ()
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

构造及析构函数文档

CPolyMatchWordStringKernel ( int32_t  size,
int32_t  degree,
bool  inhomogene 
)

constructor

参数:
sizecache size
degreedegree
inhomogeneis inhomogeneous

在文件PolyMatchWordStringKernel.cpp20行定义。

CPolyMatchWordStringKernel ( CStringFeatures< uint16_t > *  l,
CStringFeatures< uint16_t > *  r,
int32_t  degree,
bool  inhomogene 
)

constructor

参数:
lfeatures of left-hand side
rfeatures of right-hand side
degreedegree
inhomogeneis inhomogeneous

在文件PolyMatchWordStringKernel.cpp26行定义。

~CPolyMatchWordStringKernel (  ) [virtual]

在文件PolyMatchWordStringKernel.cpp34行定义。


成员函数文档

void cleanup (  ) [virtual]

clean up kernel

重载CKernel

在文件PolyMatchWordStringKernel.cpp45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

参数:
idx_aindex a
idx_bindex b
返回:
computed kernel function at indices a,b

实现了CKernel

在文件PolyMatchWordStringKernel.cpp50行定义。

virtual EKernelType get_kernel_type (  ) [virtual]

return what type of kernel we are

返回:
kernel type POLYMATCH

实现了CKernel

在文件PolyMatchWordStringKernel.h75行定义。

virtual const char* get_name (  ) const [virtual]

return the kernel's name

返回:
name PolyMatchWord

实现了CSGObject

在文件PolyMatchWordStringKernel.h81行定义。

bool init ( CFeatures l,
CFeatures r 
) [virtual]

initialize kernel

参数:
lfeatures of left-hand side
rfeatures of right-hand side
返回:
if initializing was successful

重载CStringKernel< uint16_t >

在文件PolyMatchWordStringKernel.cpp39行定义。


成员数据文档

int32_t degree [protected]

degree

在文件PolyMatchWordStringKernel.h96行定义。

bool inhomogene [protected]

if kernel is inhomogeneous

在文件PolyMatchWordStringKernel.h98行定义。


该类的文档由以下文件生成:

SHOGUN Machine Learning Toolbox - Documentation