Uri M. Ascher - Publications

Affiliations: 
University of British Columbia, Vancouver, Vancouver, BC, Canada 
Area:
Computer Science

93 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Ascher UM. Discrete processes and their continuous limits Arxiv: Numerical Analysis. 7: 123-140. DOI: 10.3934/Jdg.2020008  0.367
2018 Ascher UM, Huang H. Numerical Analysis in Visual Computing What we can Learn from each Other Vietnam Journal of Mathematics. 46: 745-759. DOI: 10.1007/S10013-018-0299-6  0.415
2017 Chen YJ, Ascher U, Pai D. Exponential Rosenbrock-Euler Integrators for Elastodynamic Simulation. Ieee Transactions On Visualization and Computer Graphics. PMID 29990083 DOI: 10.1109/Tvcg.2017.2768532  0.387
2017 Albani V, Ascher UM, Yang X, Zubelli JP. Data driven recovery of local volatility surfaces Inverse Problems and Imaging. 11: 799-823. DOI: 10.3934/Ipi.2017038  0.439
2017 Albani V, Ascher UM, Zubelli JP. Local Volatility Models in Commodity Markets and Online Calibration Journal of Computational Finance. 21. DOI: 10.21314/Jcf.2018.345  0.338
2016 Ascher UM, Roosta-Khorasani F. Algorithms that Satisfy a Stopping Criterion, Probably Vietnam Journal of Mathematics. 44: 49-69. DOI: 10.1007/S10013-015-0167-6  0.426
2015 Roosta-Khorasani F, Székely GJ, Ascher UM. Assessing Stochastic Algorithms for Large Scale Nonlinear Least Squares Problems Using Extremal Probabilities of Linear Combinations of Gamma Random Variables Siam/Asa Journal On Uncertainty Quantification. 3: 61-90. DOI: 10.1137/14096311X  0.436
2015 Roosta-Khorasani F, Ascher U. Improved Bounds on Sample Size for Implicit Matrix Trace Estimators Foundations of Computational Mathematics. 15: 1187-1212. DOI: 10.1007/S10208-014-9220-1  0.309
2014 Roosta-Khorasani F, Doel Kvd, Ascher UM. Stochastic Algorithms for Inverse Problems Involving PDEs and many Measurements Siam Journal On Scientific Computing. 36. DOI: 10.1137/130922756  0.537
2014 Huang H, Ascher UM. Faster Gradient Descent and the Efficient Recovery of Images Vietnam Journal of Mathematics. 42: 115-131. DOI: 10.1007/S10013-013-0055-X  0.486
2013 Huang H, Wu S, Gong M, Cohen-Or D, Ascher U, Zhang H(. Edge-aware point set resampling Acm Transactions On Graphics. 32: 1-12. DOI: 10.1145/2421636.2421645  0.32
2012 Van Den Doel K, Ascher UM. Adaptive and stochastic algorithms for electrical impedance tomography and DC resistivity problems with piecewise constant solutions and many measurements Siam Journal On Scientific Computing. 34. DOI: 10.1137/110826692  0.465
2012 Ascher UM. Surprising computations Applied Numerical Mathematics. 62: 1276-1288. DOI: 10.1016/J.Apnum.2012.06.025  0.564
2012 Doel K, Ascher U. The Chaotic Nature of Faster Gradient Descent Methods Journal of Scientific Computing. 51: 560-581. DOI: 10.1007/S10915-011-9521-3  0.402
2011 Van Den Doel K, Ascher UM, Pai DK. Source localization in electromyography using the inverse potential problem Inverse Problems. 27. DOI: 10.1088/0266-5611/27/2/025008  0.486
2010 Van Den Doel K, Ascher UM, Leitão A. Multiple level sets for piecewise constant surface reconstruction in highly Ill-posed problems Journal of Scientific Computing. 43: 44-66. DOI: 10.1007/S10915-009-9341-X  0.453
2009 Ascher UM, Doel Kvd, Huang H, Svaiter BF. Gradient Descent And Fast Artificial Time Integration Mathematical Modelling and Numerical Analysis. 43: 689-708. DOI: 10.1051/M2An/2009025  0.449
2008 Huang H, Ascher U. Surface Mesh Smoothing, Regularization, and Feature Detection Siam Journal On Scientific Computing. 31: 74-93. DOI: 10.1137/060676684  0.337
2008 Van Den Doel K, Ascher UM. Real-Time numerical solution of webster's equation on a nonuniform grid Ieee Transactions On Audio, Speech and Language Processing. 16: 1163-1172. DOI: 10.1109/Tasl.2008.2001107  0.449
2008 Van Den Doel K, Ascher UM, Pai DK. Computed myography: Three-dimensional reconstruction of motor functions from surface EMG data Inverse Problems. 24. DOI: 10.1088/0266-5611/24/6/065010  0.304
2008 Huang H, Ascher U. Fast denoising of surface meshes with intrinsic texture Inverse Problems. 24: 34003. DOI: 10.1088/0266-5611/24/3/034003  0.361
2007 Haber E, Heldmann S, Ascher U. Adaptive finite volume method for distributed non-smooth parameter identification Inverse Problems. 23: 1659-1676. DOI: 10.1088/0266-5611/23/4/017  0.775
2007 Van Den Doel K, Ascher UM. Dynamic level set regularization for large distributed parameter estimation problems Inverse Problems. 23: 1271-1288. DOI: 10.1088/0266-5611/23/3/025  0.576
2007 Ascher UM, Huang H, Van Den Doel K. Artificial time integration Bit Numerical Mathematics. 47: 3-25. DOI: 10.1007/S10543-006-0112-X  0.473
2007 Huang H, Ascher U. Fast Surface Mesh Denoising with Regularization and Edge Preservation Pamm. 7: 2010001-2010002. DOI: 10.1002/Pamm.200700004  0.345
2006 Ascher UM, Haber E, Huang H. On effective methods for implicit piecewise smooth surface recovery Siam Journal On Scientific Computing. 28: 339-358. DOI: 10.1137/040617261  0.76
2006 van den Doel K, Ascher UM. On level set regularization for highly ill-posed distributed parameter estimation problems Journal of Computational Physics. 216: 707-723. DOI: 10.1016/J.Jcp.2006.01.022  0.553
2005 Ascher UM, Mclachlan RI. On symplectic and multisymplectic schemes for the KdV equation Journal of Scientific Computing. 25: 83-104. DOI: 10.1007/S10915-004-4634-6  0.388
2004 Haber E, Ascher UM, Oldenburg DW. Inversion of 3D electromagnetic data in frequency and time domain using an inexact all-at-once approach Geophysics. 69: 1216-1228. DOI: 10.1190/1.1801938  0.782
2004 Ascher UM, McLachlan RI. Multisymplectic box schemes and the Korteweg-de Vries equation Applied Numerical Mathematics. 48: 255-269. DOI: 10.1016/J.Apnum.2003.09.002  0.349
2004 Haber E, Ascher UM, Oldenburg DW. Inversion of 3D electromagnetic data in frequency and time domain using an inexact all-at-once approach Geophysics. 69: 1216-1228.  0.463
2003 Aruliah DA, Ascher UM. Multigrid preconditioning for Krylov methods for time-harmonic Maxwell's equations in three dimensions Siam Journal On Scientific Computing. 24: 702-718. DOI: 10.1137/S1064827501387358  0.806
2003 Ascher UM, Boxerman E. On the modified conjugate gradient method in cloth simulation Visual Computer. 19: 526-531. DOI: 10.1007/S00371-003-0220-4  0.441
2003 Ascher UM, Haber E. A multigrid method for distributed parameter estimation problems Electronic Transactions On Numerical Analysis. 15: 1-17.  0.52
2002 Haber E, Ascher U, Oldenburg DW, Shekhtman R, Chen J. 3-D Frequency-domain CSEM Inversion Using Unconstrained Optimization Seg Technical Program Expanded Abstracts. DOI: 10.1190/1.1817338  0.74
2002 Haber E, Ascher U, Oldenburg DW. 3D forward modelling of time domain electromagnetic data Seg Technical Program Expanded Abstracts. DOI: 10.1190/1.1817334  0.798
2002 Haber E, Ascher U, Oldenburg DW. Inversion of 3D Time Domain Electromagnetic Data Using an All-at-once Approach Seg Technical Program Expanded Abstracts. DOI: 10.1190/1.1817331  0.791
2001 Aruliah DA, Ascher UM, Haber E, Oldenburg D. A method for the forward modelling of 3-D electromagnetic quasi-static problems Mathematical Models and Methods in Applied Sciences. 11: 1-21. DOI: 10.1142/S0218202501000702  0.811
2001 Haber E, Ascher UM. Fast finite volume simulation of 3D electromagnetic problems with highly discontinuous coefficients Siam Journal On Scientific Computing. 22: 1943-1961. DOI: 10.1137/S1064827599360741  0.815
2001 Haber E, Ascher UM. Preconditioned all-at-once methods for large, sparse parameter estimation problems Inverse Problems. 17: 1847-1864. DOI: 10.1088/0266-5611/17/6/319  0.812
2001 Ascher UM, Haber E. Grid refinement and scaling for distributed parameter estimation problems Inverse Problems. 17: 571-590. DOI: 10.1088/0266-5611/17/3/314  0.795
2000 Haber E, Oldenburg DW, Ascher U. Modelling 3D Maxwell's equations with non‐continuous coefficients Seg Technical Program Expanded Abstracts. DOI: 10.1190/1.1816054  0.72
2000 Haber E, Oldenburg DW, Ascher U. Inversion of 3D Electromagnetic Data - A Constrained Optimization Approach Seg Technical Program Expanded Abstracts. DOI: 10.1190/1.1816051  0.699
2000 Spiteri RJ, Pai DK, Ascher UM. Programming and control of robots by means of differential algebraic inequalities Ieee Transactions On Robotics and Automation. 16: 135-145. DOI: 10.1109/70.843168  0.303
2000 Haber E, Ascher UM, Oldenburg D. On optimization techniques for solving nonlinear inverse problems Inverse Problems. 16: 1263-1280. DOI: 10.1088/0266-5611/16/5/309  0.798
2000 Haber E, Ascher UM, Aruliah DA, Oldenburg DW. Fast Simulation of 3D Electromagnetic Problems Using Potentials Journal of Computational Physics. 163: 150-171. DOI: 10.1006/Jcph.2000.6545  0.806
1999 Ascher UM, Reich S. The Midpoint Scheme and Variants for Hamiltonian Systems: Advantages and Pitfalls Siam Journal On Scientific Computing. 21: 1045-1065. DOI: 10.1137/S1064827597316059  0.347
1999 Ascher U, Lin P. Sequential Regularization Methods for Simulating Mechanical Systems with Many Closed Loops Siam Journal On Scientific Computing. 21: 1244-1262. DOI: 10.1137/S1064827596310238  0.494
1998 Moulton JD, Morel JE, Ascher UM. Approximate Schur complement preconditioning of the lowest-order nodal discretizations Siam Journal On Scientific Computing. 19: 185-205. DOI: 10.1137/S1064827596303491  0.48
1997 Ascher UM, Pai DK, Cloutier BP. Forward dynamics, elimination methods, and formulation stiffness in robot simulation International Journal of Robotics Research. 16: 749-758. DOI: 10.1177/027836499701600603  0.472
1997 Ascher U, Lin P. Sequential Regularization Methods for Nonlinear Higher-Index DAEs Siam Journal On Scientific Computing. 18: 160-181. DOI: 10.1137/S1064827595287778  0.505
1997 Ascher UM. Stabilization of invariants of discretized differential systems Numerical Algorithms. 14: 1-24. DOI: 10.1023/A:1019144409525  0.443
1997 Ascher UM, Ruuth SJ, Spiteri RJ. Implicit-explicit Runge-Kutta methods for time-dependent partial differential equations Applied Numerical Mathematics. 25: 151-167. DOI: 10.1016/S0168-9274(97)00056-1  0.418
1996 Ascher UM, Lin P. Sequential regularization methods for higher index DAEs with constraint singularities: The linear index-2 case Siam Journal On Numerical Analysis. 33: 1921-1940. DOI: 10.1137/S0036142993253254  0.587
1995 Ascher UM, Petzold LR. The numerical solution of delay-differential-algebraic equations of retarded and neutral type Siam Journal On Numerical Analysis. 32: 1635-1657. DOI: 10.1137/0732073  0.492
1995 Ascher UM, Ruuth SJ, Wetton BTR. Implicit-explicit methods for time-dependent partial differential equations Siam Journal On Numerical Analysis. 32: 797-823. DOI: 10.1137/0732037  0.437
1995 Ascher UM, Chin H, Petzold LR, Reich S. Stabilization of Constrained Mechanical Systems with DAEs and Invariant Manifolds Mechanics of Structures and Machines. 23: 135-157. DOI: 10.1080/08905459508905232  0.452
1994 Ascher UM, Spiteri RJ. Collocation software for boundary value differential-algebraic equations Siam Journal On Scientific Computing. 15: 938-952. DOI: 10.1137/0915056  0.491
1994 Ascher UM, Chin H, Reich S. Stabilization of DAEs and invariant manifolds Numerische Mathematik. 67: 131-149. DOI: 10.1007/S002110050020  0.441
1993 Ascher UM, Ruuth SJ, Wetton B. Implicit-Explicit Methods for Time-Dependent PDE''s Journal of Applied Mathematics and Mechanics. 76. DOI: 10.14288/1.0079818  0.417
1993 Ascher UM, Carter PM. A multigrid method for shape from shading Siam Journal On Numerical Analysis. 30: 102-115. DOI: 10.1137/0730005  0.458
1992 Ascher UM, Petzold LR. Projected collocation for higher-order higher-index differential-algebraic equations Journal of Computational and Applied Mathematics. 43: 243-259. DOI: 10.1016/0377-0427(92)90269-4  0.506
1991 Ascher UM, Markowich PA, Pietra P, Schmeiser C. A Phase Plane Analysis Of Transonic Solutions For The Hydrodynamic Semiconductor Model Mathematical Models and Methods in Applied Sciences. 1: 347-376. DOI: 10.1142/S0218202591000174  0.475
1991 Ascher UM, Petzold LR. Stability of computational methods for constrained dynamics systems Siam Journal On Scientific Computing. 14: 95-120. DOI: 10.1137/0914007  0.544
1991 Ascher UM, Petzold LR. Projected implicit Runge-Kutta methods for differential-algebraic equations Siam Journal On Numerical Analysis. 28: 1097-1120. DOI: 10.1137/0728059  0.563
1991 Ascher UM, Chan SYP. On parallel methods for boundary value ODEs Computing (Vienna/New York). 46: 19-34. DOI: 10.1007/Bf02239008  0.49
1989 Ascher U, Bader G. A note on conditioning, stability and collocation matrices Applied Mathematics and Computation. 31: 437-448. DOI: 10.1145/101007.101048  0.424
1989 Ascher U. On symmetric schemes and differential-algebraic equations Siam Journal On Scientific and Statistical Computing. 10: 937-949. DOI: 10.1137/0910054  0.484
1989 Ascher U, Jacobs S. On collocation implementation for singularly perturbed two-point problems Siam Journal On Scientific and Statistical Computing. 10: 533-549. DOI: 10.1137/0910034  0.553
1989 Ascher U. On numerical differential algebraic problems with application to semiconductor device simulation Siam Journal On Numerical Analysis. 26: 517-538. DOI: 10.1137/0726031  0.524
1989 Ascher U, Markowich PA, Schmeiser C, Weiss R. Conditioning of the steady state semiconductor device problem Siam Journal On Applied Mathematics. 49: 165-185. DOI: 10.1137/0149010  0.39
1989 Ascher UM, Mattheij RMM. General framework, stability and error analysis for numerical stiff boundary value methods Numerische Mathematik. 54: 355-372. DOI: 10.1007/Bf01396767  0.465
1988 Alon A, Ascher U. Model and solution strategy for placement of rectangular blocks in the Euclidean plane Ieee Transactions On Computer-Aided Design of Integrated Circuits and Systems. 7: 378-386. DOI: 10.1109/43.3171  0.453
1987 Bader G, Ascher U. A New Basis Implementation for a Mixed Order Boundary Value ODE Solver Siam Journal On Scientific and Statistical Computing. 8: 483-500. DOI: 10.1137/0908047  0.448
1987 Ascher U, Markowich PA, Schmeiser C, Steinrück H, Weiss R. On The Conditioning Of The Steady State Semiconductor Device Problem Compel-the International Journal For Computation and Mathematics in Electrical and Electronic Engineering. 6: 19-23. DOI: 10.1108/Eb010296  0.386
1987 Ascher U, Osborne MR. A note on solving nonlinear equations and the natural criterion function Journal of Optimization Theory and Applications. 55: 147-152. DOI: 10.1007/Bf00939050  0.478
1986 Ascher U. Collocation for two-point boundary value problems revisited Siam Journal On Numerical Analysis. 23: 596-609. DOI: 10.1137/0723038  0.538
1986 Ascher U, Spudich P. A Hybrid Collocation Method For Calculating Complete Theoretical Seismograms In Vertically Varying Media Geophysical Journal International. 86: 19-40. DOI: 10.1111/J.1365-246X.1986.Tb01070.X  0.369
1985 Ascher U. On some difference schemes for singular singularly-perturbed boundary value problems Numerische Mathematik. 46: 1-30. DOI: 10.1007/Bf01400252  0.448
1984 Ascher U, Bader G. Stability of collocation at Gaussian points Siam Journal On Numerical Analysis. 23: 412-422. DOI: 10.1137/0723028  0.334
1984 Ascher U, Weiss R. Collocation for singular perturbation problems. II. Linear first order systems without turning points Mathematics of Computation. 43: 157-187. DOI: 10.1090/S0025-5718-1984-0744929-2  0.396
1983 Ascher U, Pruess S, Russell RD. On Spline Basis Selection for Solving Differential Equations Siam Journal On Numerical Analysis. 20: 121-142. DOI: 10.1137/0720009  0.442
1983 Spudich P, Ascher U. Calculation of complete theoretical seismograms in vertically varying media using collocation methods Geophysical Journal International. 75: 101-124. DOI: 10.1111/J.1365-246X.1983.Tb01915.X  0.45
1982 Ascher U, Weiss R. Collocation for Singular Perturbation Problems III: Nonlinear Problems without Turning Points Siam Journal On Scientific and Statistical Computing. 5: 811-829. DOI: 10.1137/0905058  0.504
1981 Ascher U, Christiansen J, Russell RD. Algorithm 569: COLSYS: Collocation Software for Boundary-Value ODEs [D2] Acm Transactions On Mathematical Software. 7: 223-229. DOI: 10.1145/355945.355951  0.318
1981 Ascher U, Russell RD. Reformulation of Boundary Value Problems into “Standard” Form Siam Review. 23: 238-254. DOI: 10.1137/1023039  0.391
1981 Ascher U, Weiss R. Collocation for Singular Perturbation Problems I: First Order Systems with Constant Coefficients Siam Journal On Numerical Analysis. 20: 537-557. DOI: 10.1137/0720035  0.531
1980 Ascher U, Wan FYM. Numerical Solutions for Maximum Sustainable Consumption Growth with a Multi-Grade Exhaustible Resource Siam Journal On Scientific and Statistical Computing. 1: 160-172. DOI: 10.1137/0901008  0.534
1980 Ascher U. Solving Boundary-Value Problems with a Spline-Collocation Code Journal of Computational Physics. 34: 401-413. DOI: 10.1016/0021-9991(80)90097-2  0.445
1979 Ascher U, Christiansen J, Russell RD. A collocation solver for mixed order systems of boundary value problems Mathematics of Computation. 33: 659-679. DOI: 10.1090/S0025-5718-1979-0521281-7  0.402
1979 Ascher U, Rosen JB. A collocation method for parabolic quasilinear problems on general domains Journal of Computational and Applied Mathematics. 5: 183-191. DOI: 10.1016/0377-0427(79)90004-9  0.546
1978 Ascher U. Discrete Least Squares Approximations For Ordinary Differential Equations Siam Journal On Numerical Analysis. 15: 478-496. DOI: 10.1137/0715031  0.345
1977 Ascher U. Linear Programming Algorithms for the Chebyshev Solution to a System of Consistent Linear Equations Siam Journal On Numerical Analysis. 14: 519-526. DOI: 10.1137/0714031  0.438
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