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math.NA2013
On the Behavior of the Residual in Conjugate Gradient Method
Teruyoshi Washizawa
In conjugate gradient method, it is well known that the recursively computed residual differs from true one as the iteration proceeds in finite arithmetic. Some work have been devo…
math.NA2013★ 4 cited
A2ILU: Auto-accelerated ILU Preconditioner for Sparse Linear Systems
Yuichiro Miki, Teruyoshi Washizawa
The ILU-based preconditioning methods in previous work have their own parameters to improve their performances. Although the parameters may degrade the performance, their determina…