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Current synoptic sky surveys monitor large areas of the sky to find variable and transient astronomical sources. As the number of detections per night at a single telescope easily exceeds several thousand, current detection pipelines make…

The scientific interest in studying high-energy transient phenomena in the Universe has largely grown for the last decade. Now, multiple ground-based survey projects have emerged to continuously monitor the optical (and multi-messenger)…

Instrumentation and Methods for Astrophysics · Physics 2022-08-10 K. Makhlouf , D. Turpin , D. Corre , S. Karpov , D. A. Kann , A. Klotz

Efficient identification and follow-up of astronomical transients is hindered by the need for humans to manually select promising candidates from data streams that contain many false positives. These artefacts arise in the difference images…

We present a deep neural network Real/Bogus classifier that improves classification performance in the Tomo-e Gozen transient survey by handling label errors in the training data. In the wide-field, high-frequency transient survey with…

Instrumentation and Methods for Astrophysics · Physics 2022-06-28 Ichiro Takahashi , Ryo Hamasaki , Naonori Ueda , Masaomi Tanaka , Nozomu Tominaga , Shigeyuki Sako , Ryou Ohsawa , Naoki Yoshida

We present a study of the potential for Convolutional Neural Networks (CNNs) to enable separation of astrophysical transients from image artifacts, a task known as "real-bogus" classification without requiring a template subtracted (or…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Tatiana Acero-Cuellar , Federica Bianco , Gregory Dobler , Masao Sako , Helen Qu , The LSST Dark Energy Science Collaboration

Deep-learning-based methods have been favored in astrophysics owing to their adaptability and remarkable performance and have been applied to the task of the classification of real and bogus transients. Different from most existing…

Instrumentation and Methods for Astrophysics · Physics 2025-01-15 Yating Liu , Lulu Fan , Lei Hu , Junqiang Lu , Yan Lu , Zelin Xu , Jiazheng Zhu , Haochen Wang , Xu Kong

Astronomers require efficient automated detection and classification pipelines when conducting large-scale surveys of the (optical) sky for variable and transient sources. Such pipelines are fundamentally important, as they permit rapid…

Large modern surveys require efficient review of data in order to find transient sources such as supernovae, and to distinguish such sources from artefacts and noise. Much effort has been put into the development of automatic algorithms,…

We investigate the use of Convolutional Neural Networks (including the modern ConvNeXt network family) to classify transient noise signals (i.e.~glitches) and gravitational waves in data from the Advanced LIGO detectors. First, we use…

General Relativity and Quantum Cosmology · Physics 2023-08-28 Tiago S. Fernandes , Samuel J. Vieira , Antonio Onofre , Juan Calderón Bustillo , Alejandro Torres-Forné , José A. Font

Efficient automated detection of flux-transient, reoccurring flux-variable, and moving objects is increasingly important for large-scale astronomical surveys. We present braai, a convolutional-neural-network, deep-learning real/bogus…

A body of work has been done to automate machine learning algorithm to highlight the importance of model choice. Automating the process of choosing the best forecasting model and its corresponding parameters can result to improve a wide…

Machine Learning · Computer Science 2021-09-02 Nadhir Hassen , Irina Rish

Bayesian optimization (BO) is a widely used method for data-driven optimization that generally relies on zeroth-order data of objective function to construct probabilistic surrogate models. These surrogates guide the…

Machine Learning · Computer Science 2025-08-08 Georgios Makrygiorgos , Joshua Hang Sai Ip , Ali Mesbah

This paper introduces the BOW Planner, a scalable motion planning algorithm designed to navigate robots through complex environments using constrained Bayesian optimization (CBO). Unlike traditional methods, which often struggle with…

Robotics · Computer Science 2026-05-01 Sourav Raxit , Abdullah Al Redwan Newaz , Paulo Padrao , Jose Fuentes , Leonardo Bobadilla

This study investigates the application of Bayesian Optimization (BO) for the hyperparameter tuning of neural networks, specifically targeting the enhancement of Convolutional Neural Networks (CNN) for image classification tasks. Bayesian…

Machine Learning · Computer Science 2024-10-30 Gabriele Onorato

We introduce a transformer-based neural network for the accurate classification of real and bogus transient detections in astronomical images. This network advances beyond the conventional convolutional neural network (CNN) methods, widely…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Adi Inada , Masao Sako , Tatiana Acero-Cuellar , Federica Bianco

Detection and classification of transients in data from gravitational wave detectors are crucial for efficient searches for true astrophysical events and identification of noise sources. We present a hybrid method for classification of…

Instrumentation and Methods for Astrophysics · Physics 2017-06-07 Nikhil Mukund , Sheelu Abraham , Shivaraj Kandhasamy , Sanjit Mitra , Ninan Sajeeth Philip

The observation of the transient sky through a multitude of astrophysical messengers hasled to several scientific breakthroughs these last two decades thanks to the fast evolution ofthe observational techniques and strategies employed by…

Instrumentation and Methods for Astrophysics · Physics 2020-07-22 Damien Turpin , M. Ganet , S. Antier , E. Bertin , L. P. Xin , N. Leroy , C. Wu , Y. Xu , X. H. Han , H. B. Cai , H. L. Li , X. M. Lu , J. Y. Wei

The detection and analysis of transient astronomical sources is of great importance to understand their time evolution. Traditional pipelines identify transient sources from difference (D) images derived by subtracting prior-observed…

Instrumentation and Methods for Astrophysics · Physics 2023-09-19 Zhuoyang Chen , Wenjie Zhou , Guoyou Sun , Mi Zhang , Jiangao Ruan , Jingyuan Zhao

In decision-making systems, it is important to have classifiers that have calibrated uncertainties, with an optimisation objective that can be used for automated model selection and training. Gaussian processes (GPs) provide uncertainty…

Machine Learning · Statistics 2020-03-05 Vincent Dutordoir , Mark van der Wilk , Artem Artemev , James Hensman
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