GradientDescent

java.lang.Object
- net.sf.tweety.math.opt.solver.Solver
- - net.sf.tweety.math.opt.solver.GradientDescent

```
public class GradientDescent
extends Solver
```
This class implements the gradient descent method to find an optimum.

Author:

Matthias Thimm

Field Summary

Fields
Modifier and Type Field Description

double precision
The precision of the approximation.

Constructor Summary

Constructors
Constructor Description

GradientDescent(java.util.Map<Variable,Term> startingPoint)
Creates a new gradient descent solver

Method Summary

Modifier and Type	Method	Description
`static boolean`	`isInstalled()`
`java.util.Map<Variable,Term>`	`solve(ConstraintSatisfactionProblem constraintSatisfactionProblem)`	Computes a solution to the given constraint satisfaction or optimization problem, i.e.

Methods inherited from class net.sf.tweety.math.opt.solver.Solver
getDefaultGeneralSolver, getDefaultIntegerLinearSolver, getDefaultLinearSolver, hasDefaultGeneralSolver, hasDefaultIntegerLinearSolver, hasDefaultLinearSolver, setDefaultGeneralSolver, setDefaultIntegerLinearSolver, setDefaultLinearSolver

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

- Field Detail
  - precision
```
public double precision
```
    The precision of the approximation. The actual used precision depends on the number of variables.
- Constructor Detail
  - GradientDescent
```
public GradientDescent(java.util.Map<Variable,Term> startingPoint)
```
    Creates a new gradient descent solver
    
    Parameters:
    
    startingPoint - the starting point
- Method Detail
  - solve
```
public java.util.Map<Variable,Term> solve(ConstraintSatisfactionProblem constraintSatisfactionProblem)
                                         throws GeneralMathException
```
    Description copied from class: Solver
    
    Computes a solution to the given constraint satisfaction or optimization problem, i.e. a mapping from variables of the problem to terms.
    
    Specified by:
    
    solve in class Solver
    
    Parameters:
    
    constraintSatisfactionProblem - the actual problem
    
    Returns:
    
    a mapping from variables of the problem to terms.
    
    Throws:
    
    GeneralMathException - if something went wrong.
  - isInstalled
```
public static boolean isInstalled()
                           throws java.lang.UnsupportedOperationException
```
    Throws:
    
    java.lang.UnsupportedOperationException