The well known Gaussian kernel (swiss army knife for SVMs) on dense short-real valued features.
It is computed as
where is the kernel width.
Definition at line 29 of file GaussianShortRealKernel.h.
Public Member Functions | |
CGaussianShortRealKernel (int32_t size, float64_t width) | |
CGaussianShortRealKernel (CSimpleFeatures< float32_t > *l, CSimpleFeatures< float32_t > *r, float64_t width, int32_t size=10) | |
virtual | ~CGaussianShortRealKernel () |
virtual bool | init (CFeatures *l, CFeatures *r) |
virtual bool | load_init (FILE *src) |
virtual bool | save_init (FILE *dest) |
virtual EKernelType | get_kernel_type () |
virtual const char * | get_name () const |
Protected Member Functions | |
virtual float64_t | compute (int32_t idx_a, int32_t idx_b) |
Protected Attributes | |
float64_t | width |
CGaussianShortRealKernel::CGaussianShortRealKernel | ( | int32_t | size, | |
float64_t | width | |||
) |
constructor
size | cache size | |
width | width |
Definition at line 17 of file GaussianShortRealKernel.cpp.
CGaussianShortRealKernel::CGaussianShortRealKernel | ( | CSimpleFeatures< float32_t > * | l, | |
CSimpleFeatures< float32_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 |
Definition at line 22 of file GaussianShortRealKernel.cpp.
CGaussianShortRealKernel::~CGaussianShortRealKernel | ( | ) | [virtual] |
Definition at line 29 of file GaussianShortRealKernel.cpp.
float64_t CGaussianShortRealKernel::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 |
Implements CKernel.
Definition at line 49 of file GaussianShortRealKernel.cpp.
virtual EKernelType CGaussianShortRealKernel::get_kernel_type | ( | ) | [virtual] |
return what type of kernel we are
Implements CKernel.
Definition at line 77 of file GaussianShortRealKernel.h.
virtual const char* CGaussianShortRealKernel::get_name | ( | ) | const [virtual] |
return the kernel's name
Implements CSGObject.
Definition at line 83 of file GaussianShortRealKernel.h.
initialize kernel
l | features of left-hand side | |
r | features of right-hand side |
Reimplemented from CSimpleKernel< float32_t >.
Definition at line 33 of file GaussianShortRealKernel.cpp.
bool CGaussianShortRealKernel::load_init | ( | FILE * | src | ) | [virtual] |
load kernel init_data
src | file to load from |
Implements CKernel.
Definition at line 39 of file GaussianShortRealKernel.cpp.
bool CGaussianShortRealKernel::save_init | ( | FILE * | dest | ) | [virtual] |
save kernel init_data
dest | file to save to |
Implements CKernel.
Definition at line 44 of file GaussianShortRealKernel.cpp.
float64_t CGaussianShortRealKernel::width [protected] |
width
Definition at line 98 of file GaussianShortRealKernel.h.