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Omar Ghattas

Identifiers

  • name variant Omar Ghattas 0.60 · backfill

Papers (25)

  1. Sensor Placement for Tsunami Early Warning via Large-Scale Bayesian Optimal Experimental Design cs.DC · 2026 · author #3
  2. Real-time probabilistic tsunami forecasting in Cascadia from sparse offshore pressure observations physics.geo-ph · 2026 · author #5
  3. Accelerating High-Order Finite Element Simulations at Extreme Scale with FP64 Tensor Cores cs.DC · 2026 · author #7
  4. Sparse polynomial approximation for optimal control problems constrained by elliptic PDEs with lognormal random coefficients math.NA · 2019 · author #2
  5. Hessian-based sampling for high-dimensional model reduction math.NA · 2018 · author #2
  6. Sparse polynomial approximations for affine parametric saddle point problems math.NA · 2018 · author #2
  7. A comparative study of structural similarity and regularization for joint inverse problems governed by PDEs math.NA · 2018 · author #3
  8. Scalable matrix-free adaptive product-convolution approximation for locally translation-invariant operators math.NA · 2018 · author #5
  9. Taylor approximation and variance reduction for PDE-constrained optimal control under uncertainty math.OC · 2018 · author #3
  10. Hessian-based adaptive sparse quadrature for infinite-dimensional Bayesian inverse problems math.NA · 2017 · author #3
  11. A-optimal encoding weights for nonlinear inverse problems, with applications to the Helmholtz inverse problem math.OC · 2016 · author #4
  12. Research and Education in Computational Science and Engineering cs.CE · 2016 · author #10
  13. A data scalable augmented Lagrangian KKT preconditioner for large scale inverse problems math.NA · 2016 · author #4
  14. Mean-variance risk-averse optimal control of systems governed by PDEs with random parameter fields using quadratic approximations math.OC · 2016 · author #4
  15. A randomized maximum a posterior method for posterior sampling of high dimensional nonlinear Bayesian inverse problems stat.CO · 2016 · author #3
  16. A Fast and Scalable Method for A-Optimal Design of Experiments for Infinite-dimensional Bayesian Nonlinear Inverse Problems math.OC · 2014 · author #4
  17. Scalable and efficient algorithms for the propagation of uncertainty from data through inference to prediction for large-scale problems, with application to flow of the Antarctic ice sheet math.OC · 2014 · author #4
  18. On Bayesian A- and D-optimal experimental designs in infinite dimensions math.ST · 2014 · author #3
  19. Solution of nonlinear Stokes equations discretized by high-order finite elements on nonconforming and anisotropic meshes, with application to ice sheet dynamics cs.NA · 2014 · author #3
  20. Recursive Algorithms for Distributed Forests of Octrees cs.DC · 2014 · author #4
  21. Discretely exact derivatives for hyperbolic PDE-constrained optimization problems discretized by the discontinuous Galerkin method math.NA · 2013 · author #4
  22. A computational framework for infinite-dimensional Bayesian inverse problems: Part II. Stochastic Newton MCMC with application to ice sheet flow inverse problems stat.ME · 2013 · author #4
  23. A-optimal design of experiments for infinite-dimensional Bayesian linear inverse problems with regularized $\ell_0$-sparsification stat.CO · 2013 · author #4
  24. A computational framework for infinite-dimensional Bayesian inverse problems. Part I: The linearized case, with application to global seismic inversion math.NA · 2013 · author #2
  25. A Nested Partitioning Scheme for Parallel Heterogeneous Clusters cs.DC · 2013 · author #2

Mentions

  • 1903.05547 #2 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1809.10255 #2 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1809.10251 #2 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1808.05441 #3 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1805.06018 #5 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1706.06692 #3 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1607.03556 #4 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1410.1221 #4 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1406.6573 #3 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1311.6900 #4 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1308.6221 #4 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1308.4084 #4 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1308.1313 #2 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1410.5899 #4 · backfill · confidence 0.70 Omar Ghattas
  • 1410.1221 #4 · backfill · confidence 0.70 Omar Ghattas
  • 1408.6323 #3 · backfill · confidence 0.70 Omar Ghattas
  • 1406.6573 #3 · backfill · confidence 0.70 Omar Ghattas
  • 1406.0089 #4 · backfill · confidence 0.70 Omar Ghattas
  • 1311.6900 #4 · backfill · confidence 0.70 Omar Ghattas
  • 2603.14966 #5 · arxiv_oai · confidence 0.70 Omar Ghattas
  • 1308.6221 #4 · backfill · confidence 0.70 Omar Ghattas
  • 1308.4084 #4 · backfill · confidence 0.70 Omar Ghattas
  • 1308.1313 #2 · backfill · confidence 0.70 Omar Ghattas
  • 1307.4731 #2 · backfill · confidence 0.70 Omar Ghattas

Frequent Coauthors