An algebraic two-grid multiscale preconditioner for SPD systems that builds coarse basis functions from the matrix using graph partitioning and local eigenproblems, showing robustness and better performance than standard AMG on Darcy flow tests.
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An algebraic multiscale preconditioner for large sparse SPD matrices
An algebraic two-grid multiscale preconditioner for SPD systems that builds coarse basis functions from the matrix using graph partitioning and local eigenproblems, showing robustness and better performance than standard AMG on Darcy flow tests.