Search Results for author: Christopher Williams

Found 6 papers, 1 papers with code

Approximations to the Fisher Information Metric of Deep Generative Models for Out-Of-Distribution Detection

no code implementations3 Mar 2024 Sam Dauncey, Chris Holmes, Christopher Williams, Fabian Falck

In this work, we analyse using the gradient of a data point with respect to the parameters of the deep generative model for OOD detection, based on the simple intuition that OOD data should have larger gradient norms than training data.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

A Unified Framework for U-Net Design and Analysis

1 code implementation NeurIPS 2023 Christopher Williams, Fabian Falck, George Deligiannidis, Chris Holmes, Arnaud Doucet, Saifuddin Syed

U-Nets are a go-to, state-of-the-art neural architecture across numerous tasks for continuous signals on a square such as images and Partial Differential Equations (PDE), however their design and architecture is understudied.

Image Segmentation Semantic Segmentation

A Multi-Resolution Framework for U-Nets with Applications to Hierarchical VAEs

no code implementations19 Jan 2023 Fabian Falck, Christopher Williams, Dominic Danks, George Deligiannidis, Christopher Yau, Chris Holmes, Arnaud Doucet, Matthew Willetts

U-Net architectures are ubiquitous in state-of-the-art deep learning, however their regularisation properties and relationship to wavelets are understudied.

Optimal Operation of a Tidal Lagoon as a Flexible Source of Electricity

no code implementations27 Sep 2022 Tong Zhang, Christopher Williams, Reza Ahmadian, Meysam Qadrdan

It was demonstrated that by exploiting the flexibility offered by the tidal lagoon, it can achieve a higher revenue in the day-ahead market, although their total electricity generation is reduced.

A Generative Model for Parts-based Object Segmentation

no code implementations NeurIPS 2012 S. Eslami, Christopher Williams

The Shape Boltzmann Machine (SBM) has recently been introduced as a state-of-the-art model of foreground/background object shape.

Object Semantic Segmentation

Multi-task Gaussian Process Learning of Robot Inverse Dynamics

no code implementations NeurIPS 2008 Christopher Williams, Stefan Klanke, Sethu Vijayakumar, Kian M. Chai

The inverse dynamics problem for a robotic manipulator is to compute the torques needed at the joints to drive it along a given trajectory; it is beneficial to be able to learn this function for adaptive control.

Multi-Task Learning

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