Search Results for author: Daniel Ward

Found 5 papers, 3 papers with code

Robust Neural Posterior Estimation and Statistical Model Criticism

no code implementations12 Oct 2022 Daniel Ward, Patrick Cannon, Mark Beaumont, Matteo Fasiolo, Sebastian M Schmon

In this work we revisit neural posterior estimation (NPE), a class of algorithms that enable black-box parameter inference in simulation models, and consider the implication of a simulation-to-reality gap.

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

Temporally Coherent Embeddings for Self-Supervised Video Representation Learning

1 code implementation21 Mar 2020 Joshua Knights, Ben Harwood, Daniel Ward, Anthony Vanderkop, Olivia Mackenzie-Ross, Peyman Moghadam

The proposed method exploits inherent structure of unlabeled video data to explicitly enforce temporal coherency in the embedding space, rather than indirectly learning it through ranking or predictive proxy tasks.

Metric Learning Representation Learning +3

Deep Leaf Segmentation Using Synthetic Data

3 code implementations28 Jul 2018 Daniel Ward, Peyman Moghadam, Nicolas Hudson

Our proposed approach achieves 90% leaf segmentation score on the A1 test set outperforming the-state-of-the-art approaches for the CVPPP Leaf Segmentation Challenge (LSC).

Instance Segmentation Segmentation +1

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