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Showing 1 to 2 of 2 for “"Sparse Approximate Map"”.
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Reusing and Updating Preconditioners for Sequences of Matrices
… with special focus on ILUTP and factorized sparse approximate inverses and proposes an update that we refer to as a sparse approximate map or SAM update. Analysis of the residual and eigenvalues of the map will be provided. Applications include the Quantum Monte Carlo method, model …
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Recycling Techniques for Sequences of Linear Systems and Eigenproblems
… We propose an update technique we call the sparse approximate map, or SAM update, that approximately maps one matrix to another matrix in our sequence. SAM updates are very cheap to compute and apply, preserve good convergence properties of a previously computed preconditioner, and help to …