Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Ascher, Uri"'
Autor:
Longva, Andreas, Löschner, Fabian, Fernández-Fernández, José Antonio, Larionov, Egor, Ascher, Uri M., Bender, Jan
Nonlinear systems arising from time integrators like Backward Euler can sometimes be reformulated as optimization problems, known as incremental potentials. We show through a comprehensive experimental analysis that the widely used Projected Newton m
Externí odkaz:
http://arxiv.org/abs/2311.14526
This article investigates the effect of explicitly adding auxiliary algebraic trajectory information to neural networks for dynamical systems. We draw inspiration from the field of differential-algebraic equations and differential equations on manifo
Externí odkaz:
http://arxiv.org/abs/2211.14302
Dynamics simulation with frictional contacts is important for a wide range of applications, from cloth simulation to object manipulation. Recent methods using smoothed lagged friction forces have enabled robust and differentiable simulation of elasto
Externí odkaz:
http://arxiv.org/abs/2211.10618
We examine a variety of numerical methods that arise when considering dynamical systems in the context of physics-based simulations of deformable objects. Such problems arise in various applications, including animation, robotics, control and fabrica
Externí odkaz:
http://arxiv.org/abs/2103.01891
Akademický článek
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Autor:
Ascher, Uri M.
Publikováno v:
J. Dynamics and Games 7(2), pages 123-140, 2020
The possibility that a discrete process can be fruitfully approximated by a continuous one, with the latter involving a differential system, is fascinating. Important theoretical insights, as well as significant computational efficiency gains may lie
Externí odkaz:
http://arxiv.org/abs/1910.02098
Commonly used linear and nonlinear constitutive material models in deformation simulation contain many simplifications and only cover a tiny part of possible material behavior. In this work we propose a framework for learning customized models of def
Externí odkaz:
http://arxiv.org/abs/1909.01875
The accuracy and fidelity of deformation simulations are highly dependent upon the underlying constitutive material model. Commonly used linear or nonlinear constitutive material models only cover a tiny part of possible material behavior. In this wo
Externí odkaz:
http://arxiv.org/abs/1808.04931
The implementation of the discrete adjoint method for exponential time differencing (ETD) schemes is considered. This is important for parameter estimation problems that are constrained by stiff time-dependent PDEs when the discretized PDE system is
Externí odkaz:
http://arxiv.org/abs/1610.02596
We introduce a local volatility model for the valuation of options on commodity futures by using European vanilla option prices. The corresponding calibration problem is addressed within an online framework, allowing the use of multiple price surface
Externí odkaz:
http://arxiv.org/abs/1602.04372