2016
Sparsified Cholesky and multigrid solvers for connection laplacians
Kyng R, Lee Y, Peng R, Sachdeva S, Spielman D. Sparsified Cholesky and multigrid solvers for connection laplacians. 2016, 842-850. DOI: 10.1145/2897518.2897640.Peer-Reviewed Original ResearchSystem of equationsConnection LaplacianNonzero matrix entriesApproximate inverseLinear time algorithmMultigrid algorithmMultigrid solverLinear equationsLaplacian matrixGaussian eliminationGraph LaplacianMatrix entriesLU factorizationNonzero entriesStrong approximationOriginal matrixLinear numberEquationsLaplacianLinear timeTime algorithmNew algorithmAlgorithmCholeskyFactorization
2014
Nearly Linear Time Algorithms for Preconditioning and Solving Symmetric, Diagonally Dominant Linear Systems
Spielman D, Teng S. Nearly Linear Time Algorithms for Preconditioning and Solving Symmetric, Diagonally Dominant Linear Systems. SIAM Journal On Matrix Analysis And Applications 2014, 35: 835-885. DOI: 10.1137/090771430.Peer-Reviewed Original ResearchDiagonal entriesInverse power methodLinear system solverDominant linear systemsLower asymptotic complexityLinear systemsLinear time algorithmNonzero structureCondition numberSystem solverDominant matricesFiedler vectorNonzero entriesPreconditionerAsymptotic complexityDevelopment of algorithmsRandomized algorithmSpecial casePower methodIntroduction of algorithmsRecursive fashionTime algorithmAlgorithmMatrixSolverTwice-Ramanujan Sparsifiers
Batson J, Spielman D, Srivastava N. Twice-Ramanujan Sparsifiers. SIAM Review 2014, 56: 315-334. DOI: 10.1137/130949117.Peer-Reviewed Original ResearchSpectral sparsifierLaplacian matrixPositive semidefinite matricesNonnegative diagonal matrixNumber of edgesNumber of verticesDeterministic polynomial time algorithmGeneral theoremSemidefinite matricesNonzero entriesPolynomial time algorithmSparse graphsDiagonal matrixQuadratic formSparse approximationSparsifiersWeighted graphReal matricesSpecial caseTime algorithmGraphVerticesMatrixTheoremApproximation