An H2-matrix-matrix product that recomputes its cluster bases on the fly achieves user-controlled accuracy while keeping linear complexity for constant-rank matrices.
Accuracy-Controlled and Rank-Minimized H2- Matrix-Matrix Product with Change of Cluster Bases in Linear Com- plexity,
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Accuracy Controlled Structure-Preserving ${\cal H}^2$-Matrix-Matrix Product in Linear Complexity with Change of Cluster Bases
An H2-matrix-matrix product that recomputes its cluster bases on the fly achieves user-controlled accuracy while keeping linear complexity for constant-rank matrices.