Package org.ejml.dense.row.linsol

Interface AdjustableLinearSolver_DDRM

All Superinterfaces:

LinearSolver<DMatrixRMaj,DMatrixRMaj>, LinearSolverDense<DMatrixRMaj>

All Known Implementing Classes:

AdjLinearSolverQr_DDRM

public interface AdjustableLinearSolver_DDRM
extends LinearSolverDense<DMatrixRMaj>

In many situations solutions to linear systems that share many of the same data points are needed. This can happen when solving using the most recent data or when rejecting outliers. In these situations it is possible to solve these related systems much faster than solving the entire data set again.

See Also:

• LinearSolverDense

Method Summary

Modifier and Type	Method	Description
boolean	addRowToA(double[] A_row, int rowIndex)	Adds a row to A.
boolean	removeRowFromA(int index)	Removes a row from A.

Methods inherited from interface org.ejml.interfaces.linsol.LinearSolver

getDecomposition, modifiesA, modifiesB, quality, setA, solve

Methods inherited from interface org.ejml.interfaces.linsol.LinearSolverDense

invert

Method Details

addRowToA

boolean addRowToA(double[] A_row,
 int rowIndex)

Adds a row to A. This has the same effect as creating a new A and calling LinearSolver.setA(S).

Parameters:

A_row - The row in A.

rowIndex - Where the row appears in A.

Returns:

if it succeeded or not.

removeRowFromA

boolean removeRowFromA(int index)

Removes a row from A. This has the same effect as creating a new A and calling LinearSolver.setA(S).

Parameters:

index - which row is removed from A.

Returns:

If it succeeded or not.