org.apache.commons.math3.fitting.leastsquares

Class LevenbergMarquardtOptimizer.InternalData

java.lang.Object

org.apache.commons.math3.fitting.leastsquares.LevenbergMarquardtOptimizer.InternalData

Enclosing class:

LevenbergMarquardtOptimizer

private static class LevenbergMarquardtOptimizer.InternalData
extends java.lang.Object

Holds internal data. This structure was created so that all optimizer fields can be "final". Code should be further refactored in order to not pass around arguments that will modified in-place (cf. "work" arrays).

Field Summary

Fields

Modifier and Type	Field and Description
private double[]	beta Coefficients of the Householder transforms vectors.
private double[]	diagR Diagonal elements of the R matrix in the QR decomposition.
private double[]	jacNorm Norms of the columns of the jacobian matrix.
private int[]	permutation Columns permutation array.
private int	rank Rank of the Jacobian matrix.
private double[][]	weightedJacobian Weighted Jacobian.

Constructor Summary

Constructors

Constructor and Description
LevenbergMarquardtOptimizer.InternalData(double[][] weightedJacobian, int[] permutation, int rank, double[] diagR, double[] jacNorm, double[] beta)

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

weightedJacobian

private final double[][] weightedJacobian

Weighted Jacobian.

permutation

private final int[] permutation

Columns permutation array.

rank

private final int rank

Rank of the Jacobian matrix.

diagR

private final double[] diagR

Diagonal elements of the R matrix in the QR decomposition.

jacNorm

private final double[] jacNorm

Norms of the columns of the jacobian matrix.

beta

private final double[] beta

Coefficients of the Householder transforms vectors.

Constructor Detail

LevenbergMarquardtOptimizer.InternalData

LevenbergMarquardtOptimizer.InternalData(double[][] weightedJacobian,
                                        int[] permutation,
                                        int rank,
                                        double[] diagR,
                                        double[] jacNorm,
                                        double[] beta)

Parameters:

weightedJacobian - Weighted Jacobian.

permutation - Columns permutation array.

rank - Rank of the Jacobian matrix.

diagR - Diagonal elements of the R matrix in the QR decomposition.

jacNorm - Norms of the columns of the jacobian matrix.

beta - Coefficients of the Householder transforms vectors.