Class RootFinder
- java.lang.Object
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- net.sf.tweety.math.opt.rootFinder.RootFinder
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- Direct Known Subclasses:
NewtonRootFinder
,OptimizationRootFinder
public abstract class RootFinder extends java.lang.Object
Classes which extend this class represent algorithms for finding zero points (roots) of functions.- Author:
- Matthias Thimm
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Field Summary
Fields Modifier and Type Field Description static double
PRECISION
The precision for finding roots.
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Constructor Summary
Constructors Constructor Description RootFinder()
Creates a new root finder for the given function.RootFinder(java.util.List<Term> functions, java.util.Map<Variable,Term> startingPoint)
Creates a new root finder for the given starting point and the given (multi-dimensional) function
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Method Summary
Modifier and Type Method Description java.util.List<Term>
getFunctions()
Returns the function of this root finder.java.util.Map<Variable,Term>
getStartingPoint()
Returns the starting point of this finder.abstract java.util.Map<Variable,Term>
randomRoot(java.util.List<Term> functions, java.util.Map<Variable,Term> startingPoint)
Determines the values for the variables appearing in the function such the function evaluates to zero.void
setStartingPoint(java.util.Map<Variable,Term> startingPoint)
sets the starting point of this root finder.
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Method Detail
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setStartingPoint
public void setStartingPoint(java.util.Map<Variable,Term> startingPoint)
sets the starting point of this root finder.- Parameters:
startingPoint
- the starting point
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getStartingPoint
public java.util.Map<Variable,Term> getStartingPoint()
Returns the starting point of this finder.- Returns:
- the starting point of this finder.
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getFunctions
public java.util.List<Term> getFunctions()
Returns the function of this root finder.- Returns:
- the function of this root finder.
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randomRoot
public abstract java.util.Map<Variable,Term> randomRoot(java.util.List<Term> functions, java.util.Map<Variable,Term> startingPoint) throws GeneralMathException
Determines the values for the variables appearing in the function such the function evaluates to zero.- Parameters:
functions
- the functionsstartingPoint
- the starting point for the search- Returns:
- a map from variables to terms such that "function" evaluates to zero.
- Throws:
GeneralMathException
- if something went wrong.
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