org.ejml.alg.dense.linsol.qr
Class LinearSolverQrpHouseCol

java.lang.Object
  org.ejml.alg.dense.linsol.LinearSolverAbstract
      org.ejml.alg.dense.linsol.qr.BaseLinearSolverQrp
          org.ejml.alg.dense.linsol.qr.LinearSolverQrpHouseCol

All Implemented Interfaces:

LinearSolver<DenseMatrix64F>

public class LinearSolverQrpHouseCol
extends BaseLinearSolverQrp

Performs a pseudo inverse solver using the QRColPivDecompositionHouseholderColumn decomposition directly. For details on how the pseudo inverse is computed see BaseLinearSolverQrp.

Author:

Peter Abeles

Field Summary

Fields inherited from class org.ejml.alg.dense.linsol.qr.BaseLinearSolverQrp

I, internalSolver, norm2Solution, R, R11, rank, Y

Fields inherited from class org.ejml.alg.dense.linsol.LinearSolverAbstract

A, numCols, numRows

Constructor Summary

LinearSolverQrpHouseCol(QRColPivDecompositionHouseholderColumn decomposition, boolean norm2Solution)

Method Summary

boolean	modifiesA() Returns true if the passed in matrix to LinearSolver.setA(org.ejml.data.Matrix64F) is modified.
boolean	modifiesB() Returns true if the passed in 'B' matrix to LinearSolver.solve(org.ejml.data.Matrix64F, org.ejml.data.Matrix64F) is modified.
void	solve(DenseMatrix64F B, DenseMatrix64F X) Solves for X in the linear system, A*X=B.

Methods inherited from class org.ejml.alg.dense.linsol.qr.BaseLinearSolverQrp

invert, quality, setA, upgradeSolution

Methods inherited from class org.ejml.alg.dense.linsol.LinearSolverAbstract

_setA, getA

Methods inherited from class java.lang.Object

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

Constructor Detail

LinearSolverQrpHouseCol

public LinearSolverQrpHouseCol(QRColPivDecompositionHouseholderColumn decomposition,
                               boolean norm2Solution)

Method Detail

solve

public void solve(DenseMatrix64F B,
                  DenseMatrix64F X)

Description copied from interface: LinearSolver

Solves for X in the linear system, A*X=B.

In some implementations 'B' and 'X' can be the same instance of a variable. Call LinearSolver.modifiesB() to determine if 'B' is modified.

Parameters:

B - A matrix ℜ ^{m × p}. Might be modified.

X - A matrix ℜ ^{n × p}, where the solution is written to. Modified.

modifiesA

public boolean modifiesA()

Description copied from interface: LinearSolver

Returns true if the passed in matrix to LinearSolver.setA(org.ejml.data.Matrix64F) is modified.

Returns:

true if A is modified in setA().

modifiesB

public boolean modifiesB()

Description copied from interface: LinearSolver

Returns true if the passed in 'B' matrix to LinearSolver.solve(org.ejml.data.Matrix64F, org.ejml.data.Matrix64F) is modified.

Returns:

true if B is modified in solve(B,X).