Search Results for author: Andrew Zammit-Mangion

Found 10 papers, 7 papers with code

Neural Methods for Amortised Parameter Inference

no code implementations18 Apr 2024 Andrew Zammit-Mangion, Matthew Sainsbury-Dale, Raphaël Huser

Simulation-based methods for making statistical inference have evolved dramatically over the past 50 years, keeping pace with technological advancements.

Bayesian Inference

Spatial Bayesian Neural Networks

1 code implementation16 Nov 2023 Andrew Zammit-Mangion, Michael D. Kaminski, Ba-Hien Tran, Maurizio Filippone, Noel Cressie

We propose several variants of SBNNs, most of which are able to match the finite-dimensional distribution of the target process at the selected grid better than conventional BNNs of similar complexity.

Gaussian Processes

Neural Bayes Estimators for Irregular Spatial Data using Graph Neural Networks

2 code implementations4 Oct 2023 Matthew Sainsbury-Dale, Jordan Richards, Andrew Zammit-Mangion, Raphaël Huser

Neural Bayes estimators are neural networks that approximate Bayes estimators in a fast and likelihood-free manner.

Uncertainty Quantification

Neural Bayes estimators for censored inference with peaks-over-threshold models

2 code implementations27 Jun 2023 Jordan Richards, Matthew Sainsbury-Dale, Andrew Zammit-Mangion, Raphaël Huser

Making inference with spatial extremal dependence models can be computationally burdensome since they involve intractable and/or censored likelihoods.

Statistical Deep Learning for Spatial and Spatio-Temporal Data

no code implementations5 Jun 2022 Christopher K. Wikle, Andrew Zammit-Mangion

Deep neural network models have become ubiquitous in recent years, and have been applied to nearly all areas of science, engineering, and industry.

Gaussian Processes

Spherical Poisson Point Process Intensity Function Modeling and Estimation with Measure Transport

1 code implementation24 Jan 2022 Tin Lok James Ng, Andrew Zammit-Mangion

Recent years have seen an increased interest in the application of methods and techniques commonly associated with machine learning and artificial intelligence to spatial statistics.

Point Processes Uncertainty Quantification

Emulation of greenhouse-gas sensitivities using variational autoencoders

1 code implementation22 Dec 2021 Laura Cartwright, Andrew Zammit-Mangion, Nicholas M. Deutscher

We show that our CVAE-based emulator outperforms the more traditional emulator built using empirical orthogonal functions and that it can be used with different LPDMs.

Deep Integro-Difference Equation Models for Spatio-Temporal Forecasting

1 code implementation29 Oct 2019 Andrew Zammit-Mangion, Christopher K. Wikle

Both procedures tend to be excellent for prediction purposes over small time horizons, but are generally time-consuming and, crucially, do not provide a global prior model for the temporally-varying dynamics that is realistic.

Spatio-Temporal Forecasting

Deep Compositional Spatial Models

no code implementations6 Jun 2019 Andrew Zammit-Mangion, Tin Lok James Ng, Quan Vu, Maurizio Filippone

Spatial processes with nonstationary and anisotropic covariance structure are often used when modelling, analysing and predicting complex environmental phenomena.

Gaussian Processes Uncertainty Quantification

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