An adaptive time-step energy-preserving variational integrator for flexible multibody system dynamics
S Gu, J Chen, Q Tian - Applied Mathematical Modelling, 2025 - Elsevier
An adaptive time-step variational integrator for simulating flexible multibody system
dynamics is proposed. The integrator can adapt the time-step based on the variation of the …
dynamics is proposed. The integrator can adapt the time-step based on the variation of the …
Lie group forced variational integrator networks for learning and control of robot systems
Incorporating prior knowledge of physics laws and structural properties of dynamical
systems into the design of deep learning architectures has proven to be a powerful …
systems into the design of deep learning architectures has proven to be a powerful …
A variational formulation of accelerated optimization on Riemannian manifolds
V Duruisseaux, M Leok - SIAM Journal on Mathematics of Data Science, 2022 - SIAM
It was shown recently by W. Su, S. Boyd, and E. Candes, J. Mach. Learn. Res., 17 (2016),
pp. 1--43 that Nesterov's accelerated gradient method for minimizing a smooth convex …
pp. 1--43 that Nesterov's accelerated gradient method for minimizing a smooth convex …
[图书][B] Symplectic integration of stochastic hamiltonian systems
J Hong, L Sun - 2022 - Springer
As numerous modern challenges in scientific questions, industrial needs, and societal
requirements emerge, the demand for designing numerical methods to solve tremendously …
requirements emerge, the demand for designing numerical methods to solve tremendously …
Accelerated optimization on Riemannian manifolds via discrete constrained variational integrators
V Duruisseaux, M Leok - Journal of Nonlinear Science, 2022 - Springer
A variational formulation for accelerated optimization on normed vector spaces was recently
introduced in Wibisono et al.(PNAS 113: E7351–E7358, 2016), and later generalized to the …
introduced in Wibisono et al.(PNAS 113: E7351–E7358, 2016), and later generalized to the …
Action functional gradient descent algorithm for estimating escape paths in stochastic chemical reaction networks
We first derive the Hamilton-Jacobi theory underlying continuous-time Markov processes,
and then we use the construction to develop a variational algorithm for estimating escape …
and then we use the construction to develop a variational algorithm for estimating escape …
Orbital dynamics of the solar basin
C Giovanetti, R Lasenby, K Van Tilburg - Journal of High Energy Physics, 2024 - Springer
A bstract We study the dynamics of the solar basin—the accumulated population of weakly-
interacting particles on bound orbits in the Solar System. We focus on particles starting off on …
interacting particles on bound orbits in the Solar System. We focus on particles starting off on …
Accelerated optimization on Riemannian manifolds via projected variational integrators
V Duruisseaux, M Leok - arXiv preprint arXiv:2201.02904, 2022 - arxiv.org
A variational formulation of accelerated optimization on normed spaces was recently
introduced by considering a specific family of time-dependent Bregman Lagrangian and …
introduced by considering a specific family of time-dependent Bregman Lagrangian and …
Discrete variational calculus for accelerated optimization
CM Campos, A Mahillo, DM De Diego - Journal of Machine Learning …, 2023 - jmlr.org
Many of the new developments in machine learning are connected with gradient-based
optimization methods. Recently, these methods have been studied using a variational …
optimization methods. Recently, these methods have been studied using a variational …
Practical perspectives on symplectic accelerated optimization
V Duruisseaux, M Leok - Optimization Methods and Software, 2023 - Taylor & Francis
Geometric numerical integration has recently been exploited to design symplectic
accelerated optimization algorithms by simulating the Bregman Lagrangian and Hamiltonian …
accelerated optimization algorithms by simulating the Bregman Lagrangian and Hamiltonian …