1 code implementation • 3 Apr 2024 • Mike Walmsley, Micah Bowles, Anna M. M. Scaife, Jason Shingirai Makechemu, Alexander J. Gordon, Annette M. N. Ferguson, Robert G. Mann, James Pearson, Jürgen J. Popp, Jo Bovy, Josh Speagle, Hugh Dickinson, Lucy Fortson, Tobias Géron, Sandor Kruk, Chris J. Lintott, Kameswara Mantha, Devina Mohan, David O'Ryan, Inigo V. Slijepevic
We then compare the downstream performance of finetuned models pretrained on either ImageNet-12k alone vs. additionally pretrained on our galaxy images.
no code implementations • 5 Dec 2023 • Mike Walmsley, Anna M. M. Scaife
We identify rare and visually distinctive galaxy populations by searching for structure within the learned representations of pretrained models.
no code implementations • 29 Nov 2023 • Noe Dia, M. J. Yantovski-Barth, Alexandre Adam, Micah Bowles, Pablo Lemos, Anna M. M. Scaife, Yashar Hezaveh, Laurence Perreault-Levasseur
The inverse imaging task in radio interferometry is a key limiting factor to retrieving Bayesian uncertainties in radio astronomy in a computationally effective manner.
1 code implementation • 18 May 2023 • Fiona A. M. Porter, Anna M. M. Scaife
Existing applications that utilise the MiraBest dataset are reviewed, and an extended dataset of 2100 sources is created by cross-matching MiraBest with other catalogues of radio-loud AGN that have been used more widely in the literature for machine learning applications.
1 code implementation • 26 Oct 2022 • Micah Bowles, Hongming Tang, Eleni Vardoulaki, Emma L. Alexander, Yan Luo, Lawrence Rudnick, Mike Walmsley, Fiona Porter, Anna M. M. Scaife, Inigo Val Slijepcevic, Gary Segal
We define deriving semantic class targets as a novel multi-modal task.
1 code implementation • 23 Jun 2022 • Mike Walmsley, Inigo Val Slijepcevic, Micah Bowles, Anna M. M. Scaife
New astronomical tasks are often related to earlier tasks for which labels have already been collected.
1 code implementation • 19 Apr 2022 • Inigo V. Slijepcevic, Anna M. M. Scaife, Mike Walmsley, Micah Bowles, Ivy Wong, Stanislav S. Shabala, Hongming Tang
In this work we examine the classification accuracy and robustness of a state-of-the-art semi-supervised learning (SSL) algorithm applied to the morphological classification of radio galaxies.
1 code implementation • 4 Jan 2022 • Devina Mohan, Anna M. M. Scaife, Fiona Porter, Mike Walmsley, Micah Bowles
In this work we use variational inference to quantify the degree of uncertainty in deep learning model predictions of radio galaxy classification.
1 code implementation • 8 Nov 2021 • Inigo V. Slijepcevic, Anna M. M. Scaife
In this work, we examine the robustness of state-of-the-art semi-supervised learning (SSL) algorithms when applied to morphological classification in modern radio astronomy.
1 code implementation • 25 Oct 2021 • Mike Walmsley, Anna M. M. Scaife, Chris Lintott, Michelle Lochner, Verlon Etsebeth, Tobias Géron, Hugh Dickinson, Lucy Fortson, Sandor Kruk, Karen L. Masters, Kameswara Bharadwaj Mantha, Brooke D. Simmons
Models fine-tuned from our representation are better able to identify ring galaxies than models fine-tuned from terrestrial images (ImageNet) or trained from scratch.
2 code implementations • 16 Feb 2021 • Anna M. M. Scaife, Fiona Porter
Weight sharing in convolutional neural networks (CNNs) ensures that their feature maps will be translation-equivariant.
Instrumentation and Methods for Astrophysics Astrophysics of Galaxies
1 code implementation • 1 Feb 2021 • David J. Bastien, Anna M. M. Scaife, Hongming Tang, Micah Bowles, Fiona Porter
We present a model for generating postage stamp images of synthetic Fanaroff-Riley Class I and Class II radio galaxies suitable for use in simulations of future radio surveys such as those being developed for the Square Kilometre Array.
Data Augmentation Variational Inference Instrumentation and Methods for Astrophysics Astrophysics of Galaxies
2 code implementations • 2 Dec 2020 • Micah Bowles, Anna M. M. Scaife, Fiona Porter, Hongming Tang, David J. Bastien
In this work we introduce attention as a state of the art mechanism for classification of radio galaxies using convolutional neural networks.
3 code implementations • 28 Mar 2019 • Hongming Tang, Anna M. M. Scaife, J. P. Leahy
In the context of radio galaxy classification, most state-of-the-art neural network algorithms have been focused on single survey data.
Instrumentation and Methods for Astrophysics