The Kernel distance takes a distance as input.
It turns a kernel into something distance like by computing
![\[ d({\bf x}, {\bf x'}) = e^{-\frac{k({\bf x}, {\bf x'})}{width}} \]](form_65.png)
Definition at line 33 of file KernelDistance.h.
Public Member Functions | |
| CKernelDistance () | |
| CKernelDistance (float64_t width, CKernel *k) | |
| CKernelDistance (CFeatures *l, CFeatures *r, float64_t width, CKernel *k) | |
| virtual | ~CKernelDistance () |
| virtual bool | init (CFeatures *l, CFeatures *r) |
| virtual EDistanceType | get_distance_type () |
| virtual EFeatureType | get_feature_type () |
| virtual EFeatureClass | get_feature_class () |
| virtual const char * | get_name () const |
| virtual void | cleanup () |
Protected Member Functions | |
| float64_t | compute (int32_t idx_a, int32_t idx_b) |
| CKernelDistance | ( | ) |
default constructor
Definition at line 20 of file KernelDistance.cpp.
| CKernelDistance | ( | float64_t | width, | |
| CKernel * | k | |||
| ) |
| CKernelDistance | ( | CFeatures * | l, | |
| CFeatures * | r, | |||
| float64_t | width, | |||
| CKernel * | k | |||
| ) |
constructor
| l | features of left-hand side | |
| r | features of right-hand side | |
| width | width | |
| k | kernel |
Definition at line 36 of file KernelDistance.cpp.
| ~CKernelDistance | ( | ) | [virtual] |
destructor
Definition at line 50 of file KernelDistance.cpp.
| virtual 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 |
Implements CDistance.
Definition at line 65 of file KernelDistance.cpp.
| virtual EDistanceType get_distance_type | ( | ) | [virtual] |
return what type of kernel we are
Implements CDistance.
Definition at line 71 of file KernelDistance.h.
| virtual EFeatureClass get_feature_class | ( | ) | [virtual] |
return feature class the distance can deal with
Implements CDistance.
Definition at line 82 of file KernelDistance.h.
| virtual EFeatureType get_feature_type | ( | ) | [virtual] |
return feature type the distance can deal with
Implements CDistance.
Definition at line 76 of file KernelDistance.h.
| virtual const char* get_name | ( | ) | const [virtual] |
return the distances's name
Implements CSGObject.
Definition at line 88 of file KernelDistance.h.
initialize kernel
| l | features of left-hand side | |
| r | features of right-hand side |
Reimplemented from CDistance.
Definition at line 58 of file KernelDistance.cpp.
