Class BracketFinder
- java.lang.Object
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- org.apache.commons.math4.legacy.optim.univariate.BracketFinder
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public class BracketFinder extends Object
Provide an interval that brackets a local optimum of a function. This code is based on a Python implementation (from SciPy, moduleoptimize.pyv0.5).- Since:
- 2.2
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Constructor Summary
Constructors Constructor Description BracketFinder()Constructor with default values100, 500(see theother constructor).BracketFinder(double growLimit, int maxEvaluations)Create a bracketing interval finder.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description intgetEvaluations()doublegetFHi()Get function value atgetHi().doublegetFLo()Get function value atgetLo().doublegetFMid()Get function value atgetMid().doublegetHi()doublegetLo()intgetMaxEvaluations()doublegetMid()voidsearch(UnivariateFunction func, GoalType goal, double xA, double xB)Search new points that bracket a local optimum of the function.
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Constructor Detail
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BracketFinder
public BracketFinder()
Constructor with default values100, 500(see theother constructor).
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BracketFinder
public BracketFinder(double growLimit, int maxEvaluations)
Create a bracketing interval finder.- Parameters:
growLimit- Expanding factor.maxEvaluations- Maximum number of evaluations allowed for finding a bracketing interval.
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Method Detail
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search
public void search(UnivariateFunction func, GoalType goal, double xA, double xB)
Search new points that bracket a local optimum of the function.- Parameters:
func- Function whose optimum should be bracketed.goal-Goal type.xA- Initial point.xB- Initial point.- Throws:
TooManyEvaluationsException- if the maximum number of evaluations is exceeded.
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getMaxEvaluations
public int getMaxEvaluations()
- Returns:
- the number of evaluations.
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getEvaluations
public int getEvaluations()
- Returns:
- the number of evaluations.
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