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Geoffrey Roeder

4 accepted papers

2020

Learning Composable Energy Surrogates for PDE Order Reduction

NeurIPS 2020oral

Meta-materials are an important emerging class of engineered materials in which complex macroscopic behaviour--whether electromagnetic, thermal, or mechanical--arises from modular substructure. Simulation and optimization of these materials are computationally challenging, as rich substructures nece…

Cited by 22SourcePDFScholar
2019

Efficient Amortised Bayesian Inference for Hierarchical and Nonlinear Dynamical Systems

ICML 2019oral

We introduce a flexible, scalable Bayesian inference framework for nonlinear dynamical systems characterised by distinct and hierarchical variability at the individual, group, and population levels. Our model class is a generalisation of nonlinear mixed-effects (NLME) dynamical systems, the statisti…

2017

Sticking the Landing: Simple, Lower-Variance Gradient Estimators for Variational Inference

NeurIPS 2017poster

We propose a simple and general variant of the standard reparameterized gradient estimator for the variational evidence lower bound. Specifically, we remove a part of the total derivative with respect to the variational parameters that corresponds to the score function. Removing this term produces a…