Package org.ejml.dense.row.misc

Class DeterminantFromMinor_FDRM

java.lang.Object
org.ejml.dense.row.misc.DeterminantFromMinor_FDRM
@Generated("org.ejml.dense.row.misc.DeterminantFromMinor_DDRM") public class DeterminantFromMinor_FDRM extends Object

Computes the determinant of a matrix using Laplace expansion. This is done using minor matrices as is shown below:

|A| = Sum{ i=1:k ; aij Cij }

Cij = (-1)i+j Mij

Where M_ij is the minor of matrix A formed by eliminating row i and column j from A.

This is significantly more computationally expensive than using LU decomposition, but its computation has the advantage being independent of the matrices value.

See Also:

  • Constructor Details

    • DeterminantFromMinor_FDRM

      public DeterminantFromMinor_FDRM(int width)
      Parameters:
      width - The width of the matrices that it will be computing the determinant for

    • DeterminantFromMinor_FDRM

      public DeterminantFromMinor_FDRM(int width, int minWidth)
      Parameters:
      width - The width of the matrices that it will be computing the determinant for
      minWidth - At which point should it use a predefined function to compute the determinant.

  • Method Details

    • compute

      public float compute(FMatrix1Row mat)
      Computes the determinant for the specified matrix. It must be square and have the same width and height as what was specified in the constructor.
      Parameters:
      mat - The matrix whose determinant is to be computed.
      Returns:
      The determinant.