cc.mallet.optimize

Class LimitedMemoryBFGS

java.lang.Object

cc.mallet.optimize.LimitedMemoryBFGS

All Implemented Interfaces:

Optimizer

public class LimitedMemoryBFGS
extends java.lang.Object
implements Optimizer

Nested Class Summary

Nested classes/interfaces inherited from interface cc.mallet.optimize.Optimizer

Optimizer.ByBatches

Constructor Summary

Constructors

Constructor and Description
LimitedMemoryBFGS(Optimizable.ByGradientValue function)

Method Summary

Modifier and Type	Method and Description
int	getIteration()
Optimizable	getOptimizable()
boolean	isConverged()
boolean	optimize()
boolean	optimize(int numIterations)
void	reset() Resets the previous gradients and values that are used to approximate the Hessian.
void	setEvaluator(OptimizerEvaluator.ByGradient eval)
void	setLineOptimizer(LineOptimizer.ByGradient lineOpt) Sets the LineOptimizer.ByGradient to use in L-BFGS optimization.
void	setTolerance(double newtol)

Methods inherited from class java.lang.Object

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

Constructor Detail

LimitedMemoryBFGS

public LimitedMemoryBFGS(Optimizable.ByGradientValue function)

Method Detail

getOptimizable

public Optimizable getOptimizable()

Specified by:

getOptimizable in interface Optimizer

isConverged

public boolean isConverged()

Specified by:

isConverged in interface Optimizer

setLineOptimizer

public void setLineOptimizer(LineOptimizer.ByGradient lineOpt)

Sets the LineOptimizer.ByGradient to use in L-BFGS optimization.

Parameters:

lineOpt - line optimizer for L-BFGS

setTolerance

public void setTolerance(double newtol)

setEvaluator

public void setEvaluator(OptimizerEvaluator.ByGradient eval)

getIteration

public int getIteration()

optimize

public boolean optimize()

Specified by:

optimize in interface Optimizer

optimize

public boolean optimize(int numIterations)

Specified by:

optimize in interface Optimizer

reset

public void reset()

Resets the previous gradients and values that are used to approximate the Hessian. NOTE - If the Optimizable object is modified externally, this method should be called to avoid IllegalStateExceptions.