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 [BibTeX] [Marc21]
Bayesian Optimization Meets Riemannian Manifolds in Robot Learning
Type of publication: Conference paper
Citation: Jaquier_CORL_2019
Publication status: Published
Booktitle: Conference on Robot Learning
Year: 2019
Month: October
Abstract: Bayesian optimization (BO) recently became popular in robotics to optimize control parameters and parametric policies in direct reinforcement learning due to its data efficiency and gradient-free approach. However, its performance may be seriously compromised when the parameter space is high-dimensional. A way to tackle this problem is to introduce domain knowledge into the BO framework. We propose to exploit the geometry of non-Euclidean parameter spaces, which often arise in robotics (e.g. orientation, stiffness matrix). Our approach, built on Riemannian manifold theory, allows BO to properly measure similarities in the parameter space through geometry-aware kernel functions and to optimize the acquisition function on the manifold as an unconstrained problem. We test our approach in several benchmark artificial landscapes and using a 7-DOF simulated robot to learn orientation and impedance parameters for manipulation skills.
Keywords: Bayesian optimization, Riemannian manifolds, robot learning
Projects TACT-HAND
Authors Jaquier, N.
Rozo, L.
Calinon, Sylvain
Buerger, M.
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Total mark: 0
  • Jaquier_CORL_2019.pdf