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We train deep learning models on thousands of galaxy catalogues from the state-of-the-art hydrodynamic simulations of the CAMELS project to perform regression and inference. We employ Graph Neural Networks (GNNs), architectures designed to…

宇宙学与河外天体物理 · 物理学 2023-02-10 Pablo Villanueva-Domingo , Francisco Villaescusa-Navarro

Graph neural networks (GNNs) have become a core paradigm for learning on relational data. In materials science, equivariant GNNs (EGNNs) have emerged as a compelling backbone for crystalline-structure prediction, owing to their ability to…

机器学习 · 计算机科学 2025-10-08 Yang Cao , Zhao Song , Jiahao Zhang , Jiale Zhao

We develop a theory of category-equivariant neural networks (CENNs) that unifies group/groupoid-equivariant networks, poset/lattice-equivariant networks, graph and sheaf neural networks. Equivariance is formulated as naturality in a…

机器学习 · 计算机科学 2025-12-24 Yoshihiro Maruyama

Equivariant neural networks (ENNs) are graph neural networks embedded in $\mathbb{R}^3$ and are well suited for predicting molecular properties. The ENN library e3nn has customizable convolutions, which can be designed to depend only on…

机器学习 · 计算机科学 2020-11-25 Benjamin Kurt Miller , Mario Geiger , Tess E. Smidt , Frank Noé

Group equivariant convolutional neural networks (G-CNNs) have been successfully applied in geometric deep learning. Typically, G-CNNs have the advantage over CNNs that they do not waste network capacity on training symmetries that should…

机器学习 · 计算机科学 2023-04-04 Gijs Bellaard , Daan L. J. Bon , Gautam Pai , Bart M. N. Smets , Remco Duits

Group equivariant neural networks have been explored in the past few years and are interesting from theoretical and practical standpoints. They leverage concepts from group representation theory, non-commutative harmonic analysis and…

机器学习 · 计算机科学 2020-05-01 Carlos Esteves

Graph neural networks that model 3D data, such as point clouds or atoms, are typically desired to be $SO(3)$ equivariant, i.e., equivariant to 3D rotations. Unfortunately equivariant convolutions, which are a fundamental operation for…

机器学习 · 计算机科学 2023-06-16 Saro Passaro , C. Lawrence Zitnick

We demonstrate the ability of convolutional neural networks (CNNs) to mitigate systematics in the virial scaling relation and produce dynamical mass estimates of galaxy clusters with remarkably low bias and scatter. We present two models,…

宇宙学与河外天体物理 · 物理学 2020-12-23 Matthew Ho , Markus Michael Rau , Michelle Ntampaka , Arya Farahi , Hy Trac , Barnabas Poczos

Graph Neural Networks (GNNs) have emerged as formidable resources for processing graph-based information across diverse applications. While the expressive power of GNNs has traditionally been examined in the context of graph-level tasks,…

机器学习 · 计算机科学 2025-03-12 A. Martina Neuman , Rongrong Wang , Yuying Xie

Towards developing effective and efficient brain-computer interface (BCI) systems, precise decoding of brain activity measured by electroencephalogram (EEG), is highly demanded. Traditional works classify EEG signals without considering the…

信号处理 · 电气工程与系统科学 2022-09-19 Yimin Hou , Shuyue Jia , Xiangmin Lun , Ziqian Hao , Yan Shi , Yang Li , Rui Zeng , Jinglei Lv

We propose a general architecture that combines the coefficient learning scheme with a residual operator layer for learning mappings between continuous functions in the 3D Euclidean space. Our proposed model is guaranteed to achieve…

机器学习 · 计算机科学 2023-11-21 Chaoran Cheng , Jian Peng

We describe an Artificial Neural Network (ANN) approach to classification of galaxy images and spectra. ANNs can replicate the classification of galaxy images by a human expert to the same degree of agreement as that between two human…

天体物理学 · 物理学 2007-05-23 Ofer Lahav

Graph neural networks (GNNs) have achieved great success in many graph-based tasks. Much work is dedicated to empowering GNNs with the adaptive locality ability, which enables measuring the importance of neighboring nodes to the target node…

机器学习 · 计算机科学 2021-07-01 Haifeng Li , Jun Cao , Jiawei Zhu , Yu Liu , Qing Zhu , Guohua Wu

We conduct a systematic robustness analysis of the hybrid machine learning framework \texttt{USmorph}, which integrates unsupervised and supervised learning for galaxy morphological classification. Although \texttt{USmorph} has already been…

星系天体物理 · 物理学 2025-12-19 Shiwei Zhu , Guanwen Fang , Yao Dai , Chichun Zhou , Yirui Zheng , Jie Song , Shiying Lu , Xu Kong

Learning to reason about relations and dynamics over multiple interacting objects is a challenging topic in machine learning. The challenges mainly stem from that the interacting systems are exponentially-compositional, symmetrical, and…

机器学习 · 计算机科学 2022-03-15 Wenbing Huang , Jiaqi Han , Yu Rong , Tingyang Xu , Fuchun Sun , Junzhou Huang

Classifying the morphologies of galaxies is an important step in understanding their physical properties and evolutionary histories. The advent of large-scale surveys has hastened the need to develop techniques for automated morphological…

星系天体物理 · 物理学 2021-12-28 Mitchell K. Cavanagh , Kenji Bekki , Brent A. Groves

Convolutional neural networks (CNNs) are the state-of-the-art technique for identifying strong gravitational lenses. Although they are highly successful in recovering genuine lens systems with a high true-positive rate, the unbalanced…

Euclidean deep learning is often inadequate for addressing real-world signals where the representation space is irregular and curved with complex topologies. Interpreting the geometric properties of such feature spaces has become paramount…

计算机视觉与模式识别 · 计算机科学 2024-09-12 Ramzan Basheer , Deepak Mishra

This work is focused on the morphological classification of galaxies following the Hubble sequence in which the different classes are arranged in a hierarchy. The proposed method, BCNN, is composed of two main modules. First, a…

天体物理仪器与方法 · 物理学 2024-09-04 Jonathan Serrano-Pérez , Raquel Díaz Hernández , L. Enrique Sucar

Galaxy clusters are the most massive gravitationally bound structures in the Universe and key probes of cosmic evolution. The large data volume expected from upcoming surveys requires efficient automated analysis methods for tens of…

宇宙学与河外天体物理 · 物理学 2026-05-06 M. Fogliardi , M. Meneghetti , C. Giocoli , L. Moscardini , P. Rosati , L. Leuzzi , G. Angora , L. Bazzanini , C. Spinelli