Interface Matrix.Factorization

All Known Implementing Classes:

DenseMatrix.CholeskyFactorization, DenseMatrix.EigenDecomposition, DenseMatrix.LUFactorization

Enclosing interface:

Matrix

public static interface Matrix.Factorization

Interface for matrix factorizations.

Method Summary

Modifier and Type	Method	Description
double	determinant()	Compute the matrix determinant of the factorized matrix.
int	dim1()	First dimension of the factorized matrix.
int	dim2()	Second dimension of the factorized matrix.
default Matrix	inverse()	Generates the inverse of the matrix with this factorization.
Matrix	solve(Matrix matrix)	Solves the system A * X = Y, where Y is the input matrix, and A is the matrix which produced this factorization.
SGDVector	solve(SGDVector vector)	Solves a system of linear equations A * b = y, where y is the input vector, A is the matrix which produced this factorization, and b is the returned value.

Method Details

dim1

int dim1()

First dimension of the factorized matrix.

Returns:

First dimension size.

dim2

int dim2()

Second dimension of the factorized matrix.

Returns:

Second dimension size.

determinant

double determinant()

Compute the matrix determinant of the factorized matrix.

Returns:

The matrix determinant.

solve

SGDVector solve(SGDVector vector)

Solves a system of linear equations A * b = y, where y is the input vector, A is the matrix which produced this factorization, and b is the returned value.

Parameters:

vector - The input vector y.

Returns:

The vector b.

solve

Matrix solve(Matrix matrix)

Solves the system A * X = Y, where Y is the input matrix, and A is the matrix which produced this factorization.

Parameters:

matrix - The input matrix Y.

Returns:

The matrix X.

inverse

default Matrix inverse()

Generates the inverse of the matrix with this factorization.

Returns:

The matrix inverse.