Package rocks.palaiologos.maja.matrix

Class DoubleLUPDecompositionResult

java.lang.Object
rocks.palaiologos.maja.matrix.DoubleLUPDecompositionResult
public class DoubleLUPDecompositionResult extends Object
The result of LUP decomposition.

  • Field Details

    • lower

      private final DoubleMatrix lower

    • upper

      private final DoubleMatrix upper

    • permutation

      private final int[] permutation

    • nonsingular

      private final boolean nonsingular

    • determinant

      private final double determinant

    • n

      private final int n

    • LU

      private final DoubleMatrix LU

  • Constructor Details

    • DoubleLUPDecompositionResult

      public DoubleLUPDecompositionResult(DoubleMatrix lower, DoubleMatrix upper, int[] permutation, boolean nonsingular, double determinant, int n, int m, DoubleMatrix LU)

  • Method Details

    • getMatrix

      private DoubleMatrix getMatrix(DoubleMatrix input, int[] r, int j0, int j1)

    • solve

      public DoubleMatrix solve(DoubleMatrix B)
      Solve A * X = B.
      Returns:
      X s.t. L * U * X = B(piv, :)

    • lower

      public DoubleMatrix lower()
      Get the lower triangular matrix.

    • upper

      public DoubleMatrix upper()
      Get the upper triangular matrix.

    • permutation

      public int[] permutation()
      Get the permutation/pivot vector.

    • nonsingular

      public boolean nonsingular()
      True whether the matrix is nonsingular.

    • determinant

      public double determinant()
      Get the determinant of the matrix.
      Returns: