Relaxed Krylov subspace approximation

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Relaxed Krylov subspace approximation

Recent computational and theoretical studies have shown that the matrix-vector product occurring at each step of a Krylov subspace method can be relaxed as the iterations proceed, i.e., it can be computed in a less exact manner, without degradation of the overall performance. In the present paper a general operator treatment of this phenomenon is provided and a new result further explaining its...

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ژورنال

عنوان ژورنال: PAMM

سال: 2005

ISSN: 1617-7061,1617-7061

DOI: 10.1002/pamm.200510373