Search Results for author: Melvin Leok

Found 4 papers, 3 papers with code

Simplifying Momentum-based Positive-definite Submanifold Optimization with Applications to Deep Learning

1 code implementation20 Feb 2023 Wu Lin, Valentin Duruisseaux, Melvin Leok, Frank Nielsen, Mohammad Emtiyaz Khan, Mark Schmidt

Riemannian submanifold optimization with momentum is computationally challenging because, to ensure that the iterates remain on the submanifold, we often need to solve difficult differential equations.

Lie Group Forced Variational Integrator Networks for Learning and Control of Robot Systems

1 code implementation29 Nov 2022 Valentin Duruisseaux, Thai Duong, Melvin Leok, Nikolay Atanasov

In this paper, we introduce a new structure-preserving deep learning architecture, the Lie group Forced Variational Integrator Network (LieFVIN), capable of learning controlled Lagrangian or Hamiltonian dynamics on Lie groups, either from position-velocity or position-only data.

Computational Efficiency Position

General Techniques for Constructing Variational Integrators

no code implementations14 Feb 2011 Melvin Leok, Tatiana Shingel

These two characterizations lead to the Galerkin and shooting-based constructions for discrete Lagrangians, which depend on a choice of a numerical quadrature formula, together with either a finite-dimensional function space or a one-step method.

Numerical Analysis

Control of Complex Maneuvers for a Quadrotor UAV using Geometric Methods on SE(3)

5 code implementations10 Mar 2010 Taeyoung Lee, Melvin Leok, N. Harris McClamroch

The flight maneuvers are defined by a concatenation of flight modes or primitives, each of which is achieved by a nonlinear controller that solves an output tracking problem.

Optimization and Control Systems and Control

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