Package de.bwaldvogel.liblinear

Class L2R_ErmFunction

java.lang.Object

de.bwaldvogel.liblinear.L2R_ErmFunction

All Implemented Interfaces:

Function

Direct Known Subclasses:

L2R_L2_SvcFunction, L2R_LrFunction

abstract class L2R_ErmFunction
extends Object
implements Function

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final double[]	C
(package private) final Problem	prob
(package private) final boolean	regularize_bias
(package private) double[]	tmp
private double	wTw
(package private) double[]	wx

Constructor Summary

Constructors

Constructor	Description
L2R_ErmFunction(Problem prob, Parameter parameter, double[] C)

Method Summary

Modifier and Type	Method	Description
protected abstract double	C_times_loss(int i, double wx_i)
double	fun(double[] w)
int	get_nr_variable()
double	linesearch_and_update(double[] w, double[] s, MutableDouble f, double[] g, double alpha)
(package private) void	XTv(double[] v, double[] XTv)
(package private) void	Xv(double[] v, double[] Xv)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.bwaldvogel.liblinear.Function

get_diag_preconditioner, grad, Hv

Field Details

C

final double[] C

prob

final Problem prob

wx

double[] wx

tmp

double[] tmp

wTw

private double wTw

regularize_bias

final boolean regularize_bias

Constructor Details

L2R_ErmFunction

L2R_ErmFunction(Problem prob,
 Parameter parameter,
 double[] C)

Method Details

Xv

void Xv(double[] v,
 double[] Xv)

XTv

void XTv(double[] v,
 double[] XTv)

C_times_loss

protected abstract double C_times_loss(int i,
 double wx_i)

fun

public double fun(double[] w)

Specified by:

fun in interface Function

get_nr_variable

public int get_nr_variable()

Specified by:

get_nr_variable in interface Function

linesearch_and_update

public double linesearch_and_update(double[] w,
 double[] s,
 MutableDouble f,
 double[] g,
 double alpha)

Specified by:

linesearch_and_update in interface Function