GaussNewtonOptimizer (Apache Commons Math 3.6.1 API)

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java.lang.Object
- org.apache.commons.math3.optim.BaseOptimizer<PAIR>
- - org.apache.commons.math3.optim.BaseMultivariateOptimizer<PointVectorValuePair>
  - - org.apache.commons.math3.optim.nonlinear.vector.MultivariateVectorOptimizer
    - - org.apache.commons.math3.optim.nonlinear.vector.JacobianMultivariateVectorOptimizer
      - org.apache.commons.math3.optim.nonlinear.vector.jacobian.AbstractLeastSquaresOptimizer
        
        org.apache.commons.math3.optim.nonlinear.vector.jacobian.GaussNewtonOptimizer

Deprecated.
All classes and interfaces in this package are deprecated. The optimizers that were provided here were moved to the org.apache.commons.math3.fitting.leastsquares package (cf. MATH-1008).
```
@Deprecated
public class GaussNewtonOptimizer
extends AbstractLeastSquaresOptimizer
```
Gauss-Newton least-squares solver.
Constraints are not supported: the call to optimize will throw MathUnsupportedOperationException if bounds are passed to it.
This class solve a least-square problem by solving the normal equations of the linearized problem at each iteration. Either LU decomposition or QR decomposition can be used to solve the normal equations. LU decomposition is faster but QR decomposition is more robust for difficult problems.

Since:

2.0

Field Summary
- Fields inherited from class org.apache.commons.math3.optim.BaseOptimizer
  evaluations, iterations

Constructor Summary

Constructors
Constructor and Description
`GaussNewtonOptimizer(boolean useLU, ConvergenceChecker<PointVectorValuePair> checker)` Deprecated.
`GaussNewtonOptimizer(ConvergenceChecker<PointVectorValuePair> checker)` Deprecated. Simple constructor with default settings.

Method Summary

Methods
Modifier and Type Method and Description

PointVectorValuePair doOptimize()
Deprecated.

Performs the bulk of the optimization algorithm.
- Methods inherited from class org.apache.commons.math3.optim.nonlinear.vector.jacobian.AbstractLeastSquaresOptimizer
  computeCost, computeCovariances, computeResiduals, computeSigma, computeWeightedJacobian, getChiSquare, getRMS, getWeightSquareRoot, optimize, parseOptimizationData, setCost
- Methods inherited from class org.apache.commons.math3.optim.nonlinear.vector.JacobianMultivariateVectorOptimizer
  computeJacobian
- Methods inherited from class org.apache.commons.math3.optim.nonlinear.vector.MultivariateVectorOptimizer
  computeObjectiveValue, getTarget, getTargetSize, getWeight
- Methods inherited from class org.apache.commons.math3.optim.BaseMultivariateOptimizer
  getLowerBound, getStartPoint, getUpperBound
- Methods inherited from class org.apache.commons.math3.optim.BaseOptimizer
  getConvergenceChecker, getEvaluations, getIterations, getMaxEvaluations, getMaxIterations, incrementEvaluationCount, incrementIterationCount, optimize
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - GaussNewtonOptimizer
```
public GaussNewtonOptimizer(ConvergenceChecker<PointVectorValuePair> checker)
```
    Deprecated.
    
    Simple constructor with default settings. The normal equations will be solved using LU decomposition.
    
    Parameters:
    checker - Convergence checker.
  - GaussNewtonOptimizer
```
public GaussNewtonOptimizer(boolean useLU,
                    ConvergenceChecker<PointVectorValuePair> checker)
```
    Deprecated.
    
    Parameters:
    useLU - If true, the normal equations will be solved using LU decomposition, otherwise they will be solved using QR decomposition.
    checker - Convergence checker.
- Method Detail
  - doOptimize
```
public PointVectorValuePair doOptimize()
```
    Deprecated.
    
    Performs the bulk of the optimization algorithm.
    
    Specified by:
    
    doOptimize in class BaseOptimizer<PointVectorValuePair>
    
    Returns:
    the point/value pair giving the optimal value of the objective function.

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