Package org.apache.commons.math3.fitting.leastsquares

Class LeastSquaresFactory.LocalLeastSquaresProblem.UnweightedEvaluation

java.lang.Object

org.apache.commons.math3.fitting.leastsquares.AbstractEvaluation

org.apache.commons.math3.fitting.leastsquares.LeastSquaresFactory.LocalLeastSquaresProblem.UnweightedEvaluation

All Implemented Interfaces:

LeastSquaresProblem.Evaluation

Enclosing class:

LeastSquaresFactory.LocalLeastSquaresProblem

private static class LeastSquaresFactory.LocalLeastSquaresProblem.UnweightedEvaluation
extends AbstractEvaluation

Container with the model evaluation at a particular point.

Field Summary

Fields

Modifier and Type	Field	Description
private RealMatrix	jacobian	Derivative at point.
private RealVector	point	Point of evaluation.
private RealVector	residuals	Computed residuals.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	UnweightedEvaluation(RealVector values, RealMatrix jacobian, RealVector target, RealVector point)	Create an LeastSquaresProblem.Evaluation with no weights.

Method Summary

Modifier and Type	Method	Description
RealMatrix	getJacobian()	Get the weighted Jacobian matrix.
RealVector	getPoint()	Get the abscissa (independent variables) of this evaluation.
RealVector	getResiduals()	Get the weighted residuals.

Methods inherited from class org.apache.commons.math3.fitting.leastsquares.AbstractEvaluation

getCost, getCovariances, getRMS, getSigma

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

point

private final RealVector point

Point of evaluation.

jacobian

private final RealMatrix jacobian

Derivative at point.

residuals

private final RealVector residuals

Computed residuals.

Constructor Detail

UnweightedEvaluation

private UnweightedEvaluation(RealVector values,
                             RealMatrix jacobian,
                             RealVector target,
                             RealVector point)

Create an LeastSquaresProblem.Evaluation with no weights.

Parameters:

values - the computed function values

jacobian - the computed function Jacobian

target - the observed values

point - the abscissa

Method Detail

getJacobian

public RealMatrix getJacobian()

Get the weighted Jacobian matrix.

Returns:

the weighted Jacobian: W^1/2 J.

getPoint

public RealVector getPoint()

Get the abscissa (independent variables) of this evaluation.

Returns:

the point provided to LeastSquaresProblem.evaluate(RealVector).

getResiduals

public RealVector getResiduals()

Get the weighted residuals. The residual is the difference between the observed (target) values and the model (objective function) value. There is one residual for each element of the vector-valued function. The raw residuals are then multiplied by the square root of the weight matrix.

Returns:

the weighted residuals: W^1/2 K.