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Implement a subgraph preconditioner for general sparse problems #270
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sandwichmaker
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1.13
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May 4, 2017
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sandwichmaker commentedApr 1, 2017
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Select a subset of rows of the Jacobian and use them to compute an approximation to the Hessian that is easier to invert and use that as the preconditioner for CG on the full problem.
Closely related to http://ieeexplore.ieee.org/abstract/document/6126255/