Search Results for author: Sebastian M. Schmon

Found 9 papers, 4 papers with code

Investigating the Impact of Model Misspecification in Neural Simulation-based Inference

no code implementations5 Sep 2022 Patrick Cannon, Daniel Ward, Sebastian M. Schmon

In this work, we provide the first comprehensive study of the behaviour of neural SBI algorithms in the presence of various forms of model misspecification.

Bayesian Inference Density Estimation

High Performance Simulation for Scalable Multi-Agent Reinforcement Learning

no code implementations8 Jul 2022 Jordan Langham-Lopez, Sebastian M. Schmon, Patrick Cannon

Multi-agent reinforcement learning experiments and open-source training environments are typically limited in scale, supporting tens or sometimes up to hundreds of interacting agents.

Multi-agent Reinforcement Learning reinforcement-learning +2

AnoDDPM: Anomaly Detection With Denoising Diffusion Probabilistic Models Using Simplex Noise

1 code implementation CVPR 2022 Julian Wyatt, Adam Leach, Sebastian M. Schmon, Chris G. Willcocks

A secondary problem is that Gaussian diffusion fails to capture larger anomalies; therefore we develop a multi-scale simplex noise diffusion process that gives control over the target anomaly size.

Denoising Unsupervised Anomaly Detection

Calibrating Agent-based Models to Microdata with Graph Neural Networks

no code implementations15 Jun 2022 Joel Dyer, Patrick Cannon, J. Doyne Farmer, Sebastian M. Schmon

Calibrating agent-based models (ABMs) to data is among the most fundamental requirements to ensure the model fulfils its desired purpose.

Bayesian Inference Time Series +1

Learning Multimodal VAEs through Mutual Supervision

1 code implementation ICLR 2022 Tom Joy, Yuge Shi, Philip H. S. Torr, Tom Rainforth, Sebastian M. Schmon, N. Siddharth

Here we introduce a novel alternative, the MEME, that avoids such explicit combinations by repurposing semi-supervised VAEs to combine information between modalities implicitly through mutual supervision.

Capturing Label Characteristics in VAEs

2 code implementations ICLR 2021 Tom Joy, Sebastian M. Schmon, Philip H. S. Torr, N. Siddharth, Tom Rainforth

We present a principled approach to incorporating labels in VAEs that captures the rich characteristic information associated with those labels.

A General Framework for Survival Analysis and Multi-State Modelling

1 code implementation8 Jun 2020 Stefan Groha, Sebastian M. Schmon, Alexander Gusev

We show that our model exhibits state-of-the-art performance on popular survival data sets and demonstrate its efficacy in a multi-state setting

Survival Analysis

Implicit Priors for Knowledge Sharing in Bayesian Neural Networks

no code implementations2 Dec 2019 Jack K. Fitzsimons, Sebastian M. Schmon, Stephen J. Roberts

Bayesian interpretations of neural network have a long history, dating back to early work in the 1990's and have recently regained attention because of their desirable properties like uncertainty estimation, model robustness and regularisation.

Transfer Learning

Bernoulli Race Particle Filters

no code implementations3 Mar 2019 Sebastian M. Schmon, Arnaud Doucet, George Deligiannidis

When the weights in a particle filter are not available analytically, standard resampling methods cannot be employed.

valid

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