Kernel Class Reference

The operator() gives the inner-product in the transformed space. More...

#include <kernel.h>

Inheritance diagram for Kernel:

[legend]Collaboration diagram for Kernel:

[legend]List of all members.

Public Member Functions
virtual Kernel *	create () const =0
	Create a new object using the default constructor.
virtual Kernel *	clone () const =0
	Create a new object by replicating itself.
virtual REAL	operator() (const Input &, const Input &) const =0
	The inner-product of two input vectors.
virtual void	set_data (const pDataSet &pd)
	Store a dataset in order to compute the kernel matrix.
virtual REAL	matrix (UINT i, UINT j) const
	The inner-product of two stored inputs with index i and j.
virtual void	set_params (SVM_detail *) const =0
Protected Member Functions
virtual bool	serialize (std::ostream &, ver_list &) const
virtual bool	unserialize (std::istream &, ver_list &, const id_t &=NIL_ID)
Protected Attributes
pDataSet	ptd

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Detailed Description

The operator() gives the inner-product in the transformed space.

Definition at line 43 of file kernel.h.

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Member Function Documentation

virtual Kernel* clone (   )  const [pure virtual]

Create a new object by replicating itself. Returns: A pointer to the new copy. The code for a derived class Derived is always return new Derived(*this); Though seemingly redundant, it helps to copy an object without knowing the real type of the object. See also: C++ FAQ Lite 20.6 Implements Object. Implemented in Linear, Polynomial, Stump, Perceptron, RBF, and Sigmoid. Referenced by SVM::set_kernel().

virtual Kernel* create (   )  const [pure virtual]

Create a new object using the default constructor. The code for a derived class Derived is always return new Derived(); Implements Object. Implemented in Linear, Polynomial, Stump, Perceptron, RBF, and Sigmoid.

virtual REAL matrix (  UINT  i, UINT  j )  const [inline, virtual]

The inner-product of two stored inputs with index i and j. Reimplemented in Perceptron, and RBF. Definition at line 53 of file kernel.h.

virtual REAL operator() (  const Input &  , const Input &  )  const [pure virtual]

The inner-product of two input vectors. Implemented in Linear, Polynomial, Stump, Perceptron, RBF, and Sigmoid.

bool serialize (  std::ostream &  , ver_list &  )  const [protected, virtual]

Reimplemented in Polynomial, RBF, and Sigmoid. Definition at line 18 of file kernel.cpp. References SERIALIZE_PARENT.

virtual void set_data (  const pDataSet &  pd  )  [inline, virtual]

Store a dataset in order to compute the kernel matrix. Reimplemented in Perceptron. Definition at line 51 of file kernel.h.

virtual void set_params (  SVM_detail *   )  const [pure virtual]

In order to keep the SVM interface simple and avoid member functions specific to kernels (e.g., set_gamma()), we use Kernel to pass kernel parameters to SVM_detail. Implemented in Linear, Polynomial, Stump, Perceptron, RBF, and Sigmoid. Referenced by SVM::set_kernel().

bool unserialize (  std::istream &  , ver_list &  , const id_t &  = NIL_ID )  [protected, virtual]

Reimplemented in Polynomial, RBF, and Sigmoid. Definition at line 23 of file kernel.cpp. References Object::NIL_ID, and UNSERIALIZE_PARENT.

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Member Data Documentation

pDataSet ptd [protected]

Definition at line 62 of file kernel.h.

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The documentation for this class was generated from the following files:

• kernel.h
• kernel.cpp

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