OptimizationRootFinder

java.lang.Object
- net.sf.tweety.math.opt.rootFinder.RootFinder
- - net.sf.tweety.math.opt.rootFinder.OptimizationRootFinder

Direct Known Subclasses:

BfgsRootFinder, GradientDescentRootFinder, HessianGradientDescentRootFinder
```
public abstract class OptimizationRootFinder
extends RootFinder
```
This class is the common ancestor for root finders that work with optimizers.

Author:

Matthias Thimm

Field Summary
- Fields inherited from class net.sf.tweety.math.opt.rootFinder.RootFinder
  PRECISION

Constructor Summary

Constructors
Constructor	Description
`OptimizationRootFinder()`	Creates a new root finder for the given starting point and the given function
`OptimizationRootFinder(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

Method Summary

Modifier and Type	Method	Description
`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.

Methods inherited from class net.sf.tweety.math.opt.rootFinder.RootFinder
getFunctions, getStartingPoint, setStartingPoint

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - OptimizationRootFinder
```
public OptimizationRootFinder()
```
    Creates a new root finder for the given starting point and the given function
  - OptimizationRootFinder
```
public OptimizationRootFinder(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
    
    Parameters:
    
    functions - a list of functions
    
    startingPoint - the starting point
- Method Detail
  - randomRoot
```
public abstract java.util.Map<Variable,Term> randomRoot(java.util.List<Term> functions,
                                                              java.util.Map<Variable,Term> startingPoint)
                                                       throws GeneralMathException
```
    Description copied from class: RootFinder
    
    Determines the values for the variables appearing in the function such the function evaluates to zero.
    
    Specified by:
    
    randomRoot in class RootFinder
    
    Parameters:
    
    functions - the functions
    
    startingPoint - 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.