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Shang-Tian Yang

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#machine learning Preprint Sep 2026

BandPC: Learning Residual-Band Preconditioner Combinations for Flexible Conjugate Gradient Solvers

The conjugate gradient (CG) method is a classical iterative solver for sparse symmetric positive definite (SPD) linear systems, but its convergence strongly depends on the spectral properties of the system matrix. Preconditioning can improve these properties; however, designing preconditioners that generalize across di...

D.-M. Li, Shang-Tian Yang, Xin Qiu · 0 citations

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