no.uib.cipr.matrix.package.html Maven / Gradle / Ivy
Dense and structured sparse matrices, along with matrix factorisations
and solvers. The main components are:
- Matrix and vector interfaces
- Matrix and vector implementations
- DenseVector -
Stores the vector in a dense array.
- Dense matrices - Stores the data columnwise in a linear array.
- DenseMatrix -
Recommended matrix for general cases.
- {Lower,Upper}{Symm,SPD}DenseMatrix -
Assumes implicit symmetry, and that the matrix is positive definite (SPD).
Stores entries in either the upper or lower triangular part.
- [Unit]{Lower,Upper}TriangDenseMatrix -
Only stores in the lower or upper triangular part, and assumes the rest is zero.
If the matrix is unit, the main diagonal is implicitly assumes to be one.
- Packed matrices - Stores either the lower or upper triangular part of the matrix.
- {Lower,Upper}{Symm,SPD}PackMatrix -
Like their dense counterparts, but consumes less memory.
- [Unit]{Lower,Upper}TriangPackMatrix -
Also like their dense counterparts, but consumes less memory.
- Banded matrices - Stores the matrix in a dense band.
- BandMatrix -
General band matrix with the possibility of different upper and lower triangular bandwidths.
- {Lower,Upper}{Symm,SPD}BandMatrix -
Like their dense counterparts, but consumes less memory by only storing the lower or upper parts.
- [Unit]{Lower,Upper}TriangBandMatrix -
Also like their dense counterparts, but consumes less memory by only storing the lower or upper parts..
- Tridiagonal matrices - Stores just three diagonals.
- TridiagMatrix -
Standard tridiagonal matrix.
- {Symm,SPD}TridiagMatrix -
Stores only the main diagonal and an off-diagonal.
May also assume that the matrix is positive definite.
Abstract implementations
- AbstractMatrix -
Implements all the matrix operations, but doesn't specify the matrix storage.
- AbstractVector -
Implements all the vector operations, but doesn't specify the vector storage.
Utility methods and iterators
- Matrices -
Creates submatrices and synchronized matrices. Also has several
miscellaneous utility methods.
- MatrixEntry -
Entry returned when iterating over a matrix using the for-each
statement.
- VectorEntry -
Entry returned when iterating over a vector using the for-each
statement.
LU decompositions
- BandLU -
LU decomposition of a banded matrix.
- DenseLU -
LU decomposition of a dense matrix.
- BandCholesky -
Cholesky decomposition of a banded matrix.
- DenseCholesky -
Cholesky decomposition of a dense SPD matrix.
- PackCholesky -
Cholesky decomposition of a packed SPD matrix.
Orthogonal decompositions
- LQ -
LQ decomposition.
- QL -
QL decomposition.
- QR -
QR decomposition.
- RQ -
RQ decomposition.
- GivensRotation -
Givens plane rotation.
Spectral decompositions
- EVD -
Eigenvalue decomposition of general matrices.
- SVD -
Singular value decomposition
- SymmBandEVD -
Eigenvalue decomposition of symmetrical, banded matrices.
- SymmDenseEVD -
Eigenvalue decomposition of symmetrical, dense matrices.
- SymmPackEVD -
Eigenvalue decomposition of symmetrical, packed matrices.
- SymmTridiagEVD -
Eigenvalue decomposition of symmetrical, tridiagonal matrices.