Package xal.extension.solver.algorithm

Class RandomShrinkSearch.ComboSearcher

java.lang.Object

xal.extension.solver.algorithm.RandomShrinkSearch.RandomSearcher

xal.extension.solver.algorithm.RandomShrinkSearch.ComboSearcher

All Implemented Interfaces:

RandomShrinkSearch.Searcher

Enclosing class:

RandomShrinkSearch

public class RandomShrinkSearch.ComboSearcher
extends RandomShrinkSearch.RandomSearcher

Use a combination of search engines to search for the best solution.

Field Summary

Fields

Modifier and Type	Field	Description
protected RandomShrinkSearch.RandomSearcher	randomSearcher	Description of the Field
protected static final double	SHRINK_THRESHOLD	Description of the Field
protected RandomShrinkSearch.ShrinkSearcher	shrinkSearcher	Description of the Field

Fields inherited from class xal.extension.solver.algorithm.RandomShrinkSearch.RandomSearcher

changeProbabilityBase, numVariables, randomGenerator, values

Constructor Summary

Constructors

Constructor	Description
ComboSearcher()	Constructor

Method Summary

Modifier and Type	Method	Description
void	newTopSolution(TrialPoint oldPoint, TrialPoint newPoint)	An event indicating that a new solution has been found which is better than the previous best solution according to the score given by the evaluator.
protected double	proposeValue(Variable variable)	Propose a new value for the variable by picking a search engine to propose a new value.
void	reset()	reset for searching from scratch; forget history
void	shouldShift()	turns shouldShift on

Methods inherited from class xal.extension.solver.algorithm.RandomShrinkSearch.RandomSearcher

nextPoint, nextPoint, nextTrialPoint

Methods inherited from class java.lang.Object

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

Field Details

shrinkSearcher

protected RandomShrinkSearch.ShrinkSearcher shrinkSearcher

Description of the Field

randomSearcher

protected RandomShrinkSearch.RandomSearcher randomSearcher

Description of the Field

SHRINK_THRESHOLD

protected static final double SHRINK_THRESHOLD

Description of the Field

See Also:

• Constant Field Values

Constructor Details

ComboSearcher

public ComboSearcher()

Constructor

Method Details

shouldShift

public void shouldShift()

turns shouldShift on

Specified by:

shouldShift in interface RandomShrinkSearch.Searcher

Overrides:

shouldShift in class RandomShrinkSearch.RandomSearcher

reset

public void reset()

reset for searching from scratch; forget history

Specified by:

reset in interface RandomShrinkSearch.Searcher

Overrides:

reset in class RandomShrinkSearch.RandomSearcher

newTopSolution

public void newTopSolution(TrialPoint oldPoint,
 TrialPoint newPoint)

An event indicating that a new solution has been found which is better than the previous best solution according to the score given by the evaluator.

Specified by:

newTopSolution in interface RandomShrinkSearch.Searcher

Overrides:

newTopSolution in class RandomShrinkSearch.RandomSearcher

Parameters:

oldPoint - The old best point.

newPoint - The new best point.

proposeValue

protected double proposeValue(Variable variable)

Propose a new value for the variable by picking a search engine to propose a new value.

Overrides:

proposeValue in class RandomShrinkSearch.RandomSearcher

Parameters:

variable - the variable for which to propose a new value

Returns:

the new value to propose for the variable