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src
shogun
distance
MahalanobisDistance.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) 2012 Fernando José Iglesias García
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* Copyright (C) 2012 Fernando José Iglesias García
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*/
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#ifndef _MAHALANOBISDISTANCE_H__
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#define _MAHALANOBISDISTANCE_H__
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#ifdef HAVE_LAPACK
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#include <
shogun/lib/common.h
>
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#include <
shogun/distance/RealDistance.h
>
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namespace
shogun
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{
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class
CMahalanobisDistance
:
public
CRealDistance
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{
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public
:
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CMahalanobisDistance
();
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CMahalanobisDistance
(
CDenseFeatures<float64_t>
* l,
CDenseFeatures<float64_t>
* r);
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virtual
~CMahalanobisDistance
();
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virtual
bool
init
(
CFeatures
* l,
CFeatures
* r);
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virtual
void
cleanup
();
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virtual
EDistanceType
get_distance_type
() {
return
D_MAHALANOBIS
; }
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virtual
EFeatureType
get_feature_type
() {
return
F_DREAL
; }
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virtual
const
char
*
get_name
()
const
{
return
"MahalanobisDistance"
; }
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virtual
bool
get_disable_sqrt
() {
return
disable_sqrt
; };
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virtual
void
set_disable_sqrt
(
bool
state) {
disable_sqrt
=state; };
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virtual
bool
get_use_mean
() {
return
use_mean
; };
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virtual
void
set_use_mean
(
bool
state) {
use_mean
=state; };
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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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private
:
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void
init();
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protected
:
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bool
disable_sqrt
;
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bool
use_mean
;
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SGVector<float64_t>
mean
;
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SGMatrix<float64_t>
icov
;
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};
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}
// namespace shogun
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#endif
/* HAVE_LAPACK */
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#endif
/* _MAHALANOBISDISTANCE_H__ */
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