Package xal.extension.solver

Class ProblemFactory

java.lang.Object

xal.extension.solver.ProblemFactory

public class ProblemFactory
extends Object

Generate problems for some special cases

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ProblemFactory()	hide the constructor

Method Summary

Modifier and Type	Method	Description
static Problem	getAcceleratingProblem(List<Variable> variables, Scorer scorer, double minScore, double maxScore, double endSlope)	Generate a problem which uses an accelerating satisfaction curve over the specified score range
static Problem	getDeceleratingProblem(List<Variable> variables, Scorer scorer, double minScore, double maxScore, double startSlope)	Generate a problem which uses a decelerating satisfaction curve over the specified score range
static Problem	getInverseSquareMaximizerProblem(List<Variable> variables, Scorer scorer, double tolerance)	Generate a problem which seeks to maximize the score which is in a range of zero to infinity
static Problem	getInverseSquareMinimizerProblem(List<Variable> variables, Scorer scorer, double tolerance)	Generate a problem which seeks to minimize the score which is in a range of zero to infinity
static Problem	getLinearMaximizerProblem(List<Variable> variables, Scorer scorer, double minScore, double maxScore)	Generate a problem which uses a linear rising satisfaction curve over the specified score range
static Problem	getLinearMinimizerProblem(List<Variable> variables, Scorer scorer, double minScore, double maxScore)	Generate a problem which uses a linear falling satisfaction curve over the specified score range
static Problem	getSCurveProblem(List<Variable> variables, Scorer scorer, double slope)	Generate a problem which uses an S-curve satisfaction curve over the range of negative infinity to positive infinity with center at zero
static Problem	getSCurveProblem(List<Variable> variables, Scorer scorer, double center, double slope)	Generate a problem which uses an S-curve satisfaction curve over the range of negative infinity to positive infinity

Methods inherited from class java.lang.Object

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

Constructor Details

ProblemFactory

protected ProblemFactory()

hide the constructor

Method Details

getInverseSquareMinimizerProblem

public static Problem getInverseSquareMinimizerProblem(List<Variable> variables,
 Scorer scorer,
 double tolerance)

Generate a problem which seeks to minimize the score which is in a range of zero to infinity

Parameters:

variables - the variables

scorer - the scorer

tolerance - the score corresponding to 90% satisfaction

getInverseSquareMaximizerProblem

public static Problem getInverseSquareMaximizerProblem(List<Variable> variables,
 Scorer scorer,
 double tolerance)

Generate a problem which seeks to maximize the score which is in a range of zero to infinity

Parameters:

variables - the variables

scorer - the scorer

tolerance - the score corresponding to 90% satisfaction

getSCurveProblem

public static Problem getSCurveProblem(List<Variable> variables,
 Scorer scorer,
 double slope)

Generate a problem which uses an S-curve satisfaction curve over the range of negative infinity to positive infinity with center at zero

Parameters:

variables - the variables

scorer - the scorer

slope - the slope of the satisfaction curve at the center

getSCurveProblem

public static Problem getSCurveProblem(List<Variable> variables,
 Scorer scorer,
 double center,
 double slope)

Generate a problem which uses an S-curve satisfaction curve over the range of negative infinity to positive infinity

Parameters:

variables - the variables

scorer - the scorer

center - the center value of the satisfaction curve

slope - the slope of the satisfaction curve at the center

getLinearMaximizerProblem

public static Problem getLinearMaximizerProblem(List<Variable> variables,
 Scorer scorer,
 double minScore,
 double maxScore)

Generate a problem which uses a linear rising satisfaction curve over the specified score range

Parameters:

variables - the variables

scorer - the scorer

minScore - the minimum score

maxScore - the maximum score

getLinearMinimizerProblem

public static Problem getLinearMinimizerProblem(List<Variable> variables,
 Scorer scorer,
 double minScore,
 double maxScore)

Generate a problem which uses a linear falling satisfaction curve over the specified score range

Parameters:

variables - the variables

scorer - the scorer

minScore - the minimum score

maxScore - the maximum score

getAcceleratingProblem

public static Problem getAcceleratingProblem(List<Variable> variables,
 Scorer scorer,
 double minScore,
 double maxScore,
 double endSlope)

Generate a problem which uses an accelerating satisfaction curve over the specified score range

Parameters:

variables - the variables

scorer - the scorer

minScore - the minimum score

maxScore - the maximum score

endSlope - the slope of the satisfaction curve at the maximum score

getDeceleratingProblem

public static Problem getDeceleratingProblem(List<Variable> variables,
 Scorer scorer,
 double minScore,
 double maxScore,
 double startSlope)

Generate a problem which uses a decelerating satisfaction curve over the specified score range

Parameters:

variables - the variables

scorer - the scorer

minScore - the minimum score

maxScore - the maximum score

startSlope - the slope of the satisfaction curve at the minimum score