详细描述

The Distance kernel takes a distance as input.

It turns a distance into something kernel like by computing

$k({\bf x}, {\bf x'}) = e^{-\frac{dist({\bf x}, {\bf x'})}{width}}$

继承图，类CDistanceKernel

公有成员
	CDistanceKernel (int32_t cache, float64_t width, CDistance *dist)
	CDistanceKernel (CFeatures l, CFeatures r, float64_t width, CDistance *dist)
virtual	~CDistanceKernel ()
virtual bool	init (CFeatures l, CFeatures r)
virtual EKernelType	get_kernel_type ()
virtual EFeatureType	get_feature_type ()
virtual EFeatureClass	get_feature_class ()
virtual const char *	get_name () const
保护成员
float64_t	compute (int32_t idx_a, int32_t idx_b)

构造及析构函数文档

CDistanceKernel	(	int32_t	cache,
		float64_t	width,
		CDistance *	dist
	)

constructor

参数:

	cache	cache size
	width	width
	dist	distance

在文件DistanceKernel.cpp第20行定义。

CDistanceKernel	(	CFeatures *	l,
		CFeatures *	r,
		float64_t	width,
		CDistance *	dist
	)

constructor

参数:

	l	features of left-hand side
	r	features of right-hand side
	width	width
	dist	distance

在文件DistanceKernel.cpp第27行定义。

~CDistanceKernel ( ) [virtual]

在文件DistanceKernel.cpp第36行定义。

成员函数文档

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_a	index a
	idx_b	index b

返回:: computed kernel function at indices a,b

实现了CKernel。

在文件DistanceKernel.cpp第52行定义。

virtual EFeatureClass get_feature_class ( ) [virtual]

return feature class the kernel can deal with

返回:: feature class of distance used

实现了CKernel。

在文件DistanceKernel.h第79行定义。

virtual EFeatureType get_feature_type ( ) [virtual]

return feature type the kernel can deal with

返回:: feature type of distance used

实现了CKernel。

在文件DistanceKernel.h第73行定义。

virtual EKernelType get_kernel_type ( ) [virtual]

return what type of kernel we are

返回:: kernel type DISTANCE

实现了CKernel。

在文件DistanceKernel.h第68行定义。

virtual const char* get_name ( ) const [virtual]

return the kernel's name

返回:: name Distance

实现了CSGObject。

在文件DistanceKernel.h第85行定义。

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

initialize kernel

参数:

	l	features of left-hand side
	r	features of right-hand side

返回:: if initializing was successful

重载CKernel。

在文件DistanceKernel.cpp第44行定义。

该类的文档由以下文件生成：

CDistanceKernel类参考

详细描述

公有成员

保护成员

构造及析构函数文档

成员函数文档