Computes the standard linear kernel on sparse real valued features.
Formally, it computes
在文件SparseLinearKernel.h第29行定义。
公有成员 | |
CSparseLinearKernel () | |
CSparseLinearKernel (CSparseFeatures< float64_t > *l, CSparseFeatures< float64_t > *r) | |
virtual | ~CSparseLinearKernel () |
virtual bool | init (CFeatures *l, CFeatures *r) |
virtual void | cleanup () |
virtual EKernelType | get_kernel_type () |
virtual const char * | get_name () const |
virtual bool | init_optimization (int32_t num_suppvec, int32_t *sv_idx, float64_t *alphas) |
virtual bool | delete_optimization () |
virtual float64_t | compute_optimized (int32_t idx) |
virtual void | clear_normal () |
virtual void | add_to_normal (int32_t idx, float64_t weight) |
const float64_t * | get_normal (int32_t &len) |
保护成员 | |
virtual float64_t | compute (int32_t idx_a, int32_t idx_b) |
保护属性 | |
float64_t * | normal |
int32_t | normal_length |
constructor
在文件SparseLinearKernel.cpp第20行定义。
CSparseLinearKernel | ( | CSparseFeatures< float64_t > * | l, |
CSparseFeatures< float64_t > * | r | ||
) |
constructor
l | features of left-hand side |
r | features of right-hand side |
在文件SparseLinearKernel.cpp第26行定义。
~CSparseLinearKernel | ( | ) | [virtual] |
在文件SparseLinearKernel.cpp第34行定义。
void add_to_normal | ( | int32_t | idx, |
float64_t | weight | ||
) | [virtual] |
void cleanup | ( | ) | [virtual] |
void clear_normal | ( | ) | [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SparseLinearKernel.cpp第72行定义。
float64_t compute_optimized | ( | int32_t | idx ) | [virtual] |
compute optimized
idx | index to compute |
重载CKernel。
在文件SparseLinearKernel.cpp第115行定义。
bool delete_optimization | ( | ) | [virtual] |
virtual EKernelType get_kernel_type | ( | ) | [virtual] |
return what type of kernel we are
实现了CKernel。
在文件SparseLinearKernel.h第61行定义。
virtual const char* get_name | ( | ) | const [virtual] |
const float64_t* get_normal | ( | int32_t & | len ) |
get normal
len | length of normal vector will be stored here |
在文件SparseLinearKernel.h第108行定义。
initialize kernel
l | features of left-hand side |
r | features of right-hand side |
在文件SparseLinearKernel.cpp第39行定义。
bool init_optimization | ( | int32_t | num_suppvec, |
int32_t * | sv_idx, | ||
float64_t * | alphas | ||
) | [virtual] |
optimizable kernel, i.e. precompute normal vector and as phi(x) = x do scalar product in input space
num_suppvec | number of support vectors |
sv_idx | support vector index |
alphas | alphas |
重载CKernel。
在文件SparseLinearKernel.cpp第93行定义。
normal vector (used in case of optimized kernel)
在文件SparseLinearKernel.h第127行定义。
int32_t normal_length [protected] |
length of normal vector
在文件SparseLinearKernel.h第129行定义。