Description Usage Arguments Details Value Warning See Also Examples
Incomplete Cholesky factorization method to generate preconditioning matrix for conjugate gradient method.
1 | icc(A)
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A |
matrix, symmetric and positive definite. |
Performs incomplete Cholesky factorization on the input matrix A, the output matrix is used for preconditioning in pcgsolve() if "ICC" is specified as the preconditioner.
Returns a matrix after incomplete Cholesky factorization.
Users need to check that input matrix A is symmetric and positive definite before applying the function.
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