Interface | Description |
---|---|
Preconditioner |
Preconditioning reduces the condition number of the
coefficient matrix of a linear system to accelerate the convergence
when the system is solved by an iterative method.
|
PreconditionerFactory |
This constructs a new instance of
Preconditioner for a coefficient matrix. |
Class | Description |
---|---|
IdentityPreconditioner |
This identity preconditioner is used when no preconditioning is applied.
|
JacobiPreconditioner |
The Jacobi (or diagonal) preconditioner is one of the simplest forms of
preconditioning, such that the preconditioner is the diagonal of
the coefficient matrix, i.e., P = diag(A).
|
SSORPreconditioner |
SSOR preconditioner is derived from a symmetric coefficient matrix A
which is decomposed as
A = D + L + Lt
The SSOR preconditioning matrix is defined as
M = (D + L)D-1(D + L)t
or, parameterized by ω
M(ω) = (1/(2 - ω))(D / ω + L)(D / ω)-1(D / ω + L)t
|
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