hex.optimization

Class OptimizationUtils.SimpleBacktrackingLS

java.lang.Object

hex.optimization.OptimizationUtils.SimpleBacktrackingLS

All Implemented Interfaces:

OptimizationUtils.LineSearchSolver

Enclosing class:

OptimizationUtils

public static final class OptimizationUtils.SimpleBacktrackingLS
extends java.lang.Object
implements OptimizationUtils.LineSearchSolver

Constructor Summary

Constructors

Constructor and Description
SimpleBacktrackingLS(OptimizationUtils.GradientSolver gslvr, double[] betaStart, double l1pen)
SimpleBacktrackingLS(OptimizationUtils.GradientSolver gslvr, double[] betaStart, double l1pen, OptimizationUtils.GradientInfo ginfo)

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(double[] direction)
double	getObj()
double[]	getX()
OptimizationUtils.GradientInfo	ginfo()
int	nfeval()
OptimizationUtils.LineSearchSolver	setInitialStep(double s)
double	step()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleBacktrackingLS

public SimpleBacktrackingLS(OptimizationUtils.GradientSolver gslvr,
                            double[] betaStart,
                            double l1pen)

SimpleBacktrackingLS

public SimpleBacktrackingLS(OptimizationUtils.GradientSolver gslvr,
                            double[] betaStart,
                            double l1pen,
                            OptimizationUtils.GradientInfo ginfo)

Method Detail

nfeval

public int nfeval()

Specified by:

nfeval in interface OptimizationUtils.LineSearchSolver

getObj

public double getObj()

Specified by:

getObj in interface OptimizationUtils.LineSearchSolver

getX

public double[] getX()

Specified by:

getX in interface OptimizationUtils.LineSearchSolver

setInitialStep

public OptimizationUtils.LineSearchSolver setInitialStep(double s)

Specified by:

setInitialStep in interface OptimizationUtils.LineSearchSolver

evaluate

public boolean evaluate(double[] direction)

Specified by:

evaluate in interface OptimizationUtils.LineSearchSolver

step

public double step()

Specified by:

step in interface OptimizationUtils.LineSearchSolver

ginfo

public OptimizationUtils.GradientInfo ginfo()

Specified by:

ginfo in interface OptimizationUtils.LineSearchSolver

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object