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Binary neutron star mergers are important to understand stellar evolution, the chemical enrichment of the universe via the r-process, the physics of short gamma-ray bursts, gravitational waves and pulsars. The rates at which these…

In this paper we propose a new strategy, based on anomaly detection methods, to search for new physics phenomena at colliders independently of the details of such new events. For this purpose, machine learning techniques are trained using…

High Energy Physics - Phenomenology · Physics 2021-11-30 M. Crispim Romao , N. F. Castro , R. Pedro

The next Galactic core-collapse supernova (SN) should yield a large number of observed neutrinos. Using Bayesian techniques, we show that with an SN at a known distance up to 25 kpc, the neutrino events in a water Cherenkov detector similar…

High Energy Astrophysical Phenomena · Physics 2022-05-11 Jackson Olsen , Yong-Zhong Qian

District Heating (DH) systems are essential for energy-efficient urban heating. However, despite the advancements in automated fault detection and diagnosis (FDD), DH still faces challenges in operational faults that impact efficiency. This…

Machine Learning · Computer Science 2024-08-28 Jonne van Dreven , Abbas Cheddad , Sadi Alawadi , Ahmad Nauman Ghazi , Jad Al Koussa , Dirk Vanhoudt

Large numbers of supernovae (SNe) have been discovered in recent years, and many more will be found in the near future. Once discovered, further study of a SN and its possible use as an astronomical tool (e.g., as a distance estimator)…

Gravitationally lensed supernovae (SNe) are extremely rare and fade quickly; as a result, they are challenging to detect. To identify lensed SNe in large imaging datasets, current surveys primarily rely on the {\it magnification} effect of…

Instrumentation and Methods for Astrophysics · Physics 2025-12-24 Fawad Kirmani , Arjun Karki , Steve Rodney , Kyle Lackey , Varsha P. Kulkarni , John R. Rose , Justin Pierel

Kilonovae, possible electromagnetic counterparts to neutron star mergers, provide important information about high-energy transient phenomena and, in principle, also allow us to obtain information about the source properties responsible for…

High Energy Astrophysical Phenomena · Physics 2025-03-28 Sahil Jhawar , Thibeau Wouters , Peter T. H. Pang , Mattia Bulla , Michael W. Coughlin , Tim Dietrich

Anomaly segmentation aims to identify Out-of-Distribution (OoD) anomalous objects within images. Existing pixel-wise methods typically assign anomaly scores individually and employ a global thresholding strategy to segment anomalies.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Yuxing Liu , Ji Zhang , Zhou Xuchuan , Jingzhong Xiao , Huimin Yang , Jiaxin Zhong

Visual anomaly detection is a highly challenging task, often categorized as a one-class classification and segmentation problem. Recent studies have demonstrated that the student-teacher (S-T) framework effectively addresses this challenge.…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Shixuan Song , Hao Chen , Shu Hu , Xin Wang , Jinrong Hu , Xi Wu

Anomaly detection in medical imaging is essential for identifying rare pathological conditions, particularly when annotated abnormal samples are limited. We propose a hybrid anomaly detection framework that integrates self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Pritam Kar , Gouri Lakshmi S , Saptarshi Bej

With the enhancement of sensitivity of Gravitational Wave (GW) detectors and capabilities of large survey facilities, such as Vera Rubin Observatory Legacy Survey of Space and Time (LSST) and 2.5-m Wide Field Survey Telescope (WFST), we now…

Instrumentation and Methods for Astrophysics · Physics 2023-12-29 Runduo Liang , Zhengyan Liu , Lei Lei , Wen Zhao

We present the spectra of 36 Supernovae (SNe) of various types, obtained by the European Supernova Collaboration. Because of the spectral classification and the phase determination at their discovery the SNe did not warrant further study,…

Deep neural networks (DNN) can achieve high performance when applied to In-Distribution (ID) data which come from the same distribution as the training set. When presented with anomaly inputs not from the ID, the outputs of a DNN should be…

Machine Learning · Computer Science 2021-10-08 Fangzhen Zhao , Chenyi Zhang , Naipeng Dong , Zefeng You , Zhenxin Wu

By design, model-based approaches for flagging transiting exoplanets in light curves, such as boxed least squares, excel at detecting planets with low S/N at the expense of finding signals that are not well described by the assumed model,…

Earth and Planetary Astrophysics · Physics 2019-03-28 Adam Wheeler , David Kipping

We report the automatic detection of 11 transients (7 possible supernovae and 4 active galactic nuclei candidates) within the Zwicky Transient Facility fourth data release (ZTF DR4), all of them observed in 2018 and absent from public…

Instrumentation and Methods for Astrophysics · Physics 2022-06-01 P. D. Aleo , K. L. Malanchev , M. V. Pruzhinskaya , E. E. O. Ishida , E. Russeil , M. V. Kornilov , V. S. Korolev , S. Sreejith , A. A. Volnova , G. S. Narayan

The rapid growth of the Internet of Things (IoT) has given rise to highly diverse and interconnected ecosystems that are increasingly susceptible to sophisticated cyber threats. Conventional anomaly detection schemes often prioritize…

Cryptography and Security · Computer Science 2025-11-25 Saeid Jamshidi , Fatemeh Erfan , Omar Abdul-Wahab , Martine Bellaiche , Foutse Khomh

It is challenging to detect the anomaly in crowded scenes for quite a long time. In this paper, a self-supervised framework, abnormal event detection network (AED-Net), which is composed of PCAnet and kernel principal component analysis…

Computer Vision and Pattern Recognition · Computer Science 2019-03-29 Tian Wang , Zichen Miao , Yuxin Chen , Yi Zhou , Guangcun Shan , Hichem Snoussi

Anomaly detection in videos is challenging due to the complexity, noise, and diverse nature of activities such as violence, shoplifting, and vandalism. While deep learning (DL) has shown excellent performance in this area, existing…

Computer Vision and Pattern Recognition · Computer Science 2024-08-05 Sabah Abdulazeez Jebur , Khalid A. Hussein , Haider Kadhim Hoomod , Laith Alzubaidi , Ahmed Ali Saihood , YuanTong Gu