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src
shogun
loss
SquaredHingeLoss.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) 2011 Shashwat Lal Das
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* Written (W) 2012 Fernando José Iglesias García
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* Copyright (c) 2011 Berlin Institute of Technology and Max-Planck-Society.
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*/
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#ifndef _SQUAREDHINGELOSS_H__
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#define _SQUAREDHINGELOSS_H__
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#include <
shogun/loss/LossFunction.h
>
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namespace
shogun
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{
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class
CSquaredHingeLoss
:
public
CLossFunction
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{
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public
:
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CSquaredHingeLoss
():
CLossFunction
() {};
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~CSquaredHingeLoss
() {};
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float64_t
loss
(
float64_t
z);
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float64_t
first_derivative
(
float64_t
z);
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float64_t
second_derivative
(
float64_t
z);
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virtual
float64_t
get_update
(
float64_t
prediction,
float64_t
label,
float64_t
eta_t,
float64_t
norm
);
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virtual
float64_t
get_square_grad
(
float64_t
prediction,
float64_t
label);
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virtual
ELossType
get_loss_type
() {
return
L_SQUAREDHINGELOSS
; }
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virtual
const
char
*
get_name
()
const
{
return
"SquaredHingeLoss"
; }
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};
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}
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#endif // _SQUAREDHINGELOSS_H__
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