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src
shogun
kernel
Chi2Kernel.h
浏览该文件的文档.
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* Written (W) 1999-2009 Soeren Sonnenburg
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* Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
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*/
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#ifndef _CHI2KERNEL_H___
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#define _CHI2KERNEL_H___
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#include <
shogun/lib/common.h
>
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#include <
shogun/kernel/DotKernel.h
>
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#include <
shogun/features/Features.h
>
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#include <
shogun/features/DenseFeatures.h
>
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namespace
shogun
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{
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class
CChi2Kernel
:
public
CDotKernel
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{
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void
init();
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public
:
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CChi2Kernel
();
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CChi2Kernel
(int32_t size,
float64_t
width
);
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CChi2Kernel
(
CDenseFeatures<float64_t>
* l,
CDenseFeatures<float64_t>
* r,
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float64_t
width, int32_t size=10);
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virtual
~CChi2Kernel
();
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virtual
bool
init(
CFeatures
* l,
CFeatures
* r);
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virtual
float64_t
get_width
();
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static
CChi2Kernel
*
obtain_from_generic
(
CKernel
*
kernel
);
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virtual
EKernelType
get_kernel_type
() {
return
K_CHI2
; }
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virtual
EFeatureClass
get_feature_class
() {
return
C_DENSE
; }
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virtual
EFeatureType
get_feature_type
() {
return
F_DREAL
; }
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virtual
const
char
*
get_name
()
const
{
return
"Chi2Kernel"
; }
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protected
:
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virtual
float64_t
compute
(int32_t idx_a, int32_t idx_b);
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protected
:
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float64_t
width
;
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};
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}
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#endif
/* _CHI2KERNEL_H__ */
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