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In this paper, the fourth version the Sloan Digital Sky Survey (SDSS-4), Data Release 16 dataset was used to classify the SDSS dataset into galaxies, stars, and quasars using machine learning and deep learning architectures. We efficiently…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Sabeesh Ethiraj , Bharath Kumar Bolla

Downsampling is widely adopted to achieve a good trade-off between accuracy and latency for visual recognition. Unfortunately, the commonly used pooling layers are not learned, and thus cannot preserve important information. As another…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Ho Man Kwan , Shenghui Song

Accurate classification of celestial objects is essential for advancing our understanding of the universe. MargNet is a recently developed deep learning-based classifier applied to SDSS DR16 dataset to segregate stars, quasars, and compact…

天体物理仪器与方法 · 物理学 2024-08-29 Srinadh Reddy Bhavanam , Sumohana S. Channappayya , P. K. Srijith , Shantanu Desai

Despite the utility of neural networks (NNs) for astronomical time-series classification, the proliferation of learning architectures applied to diverse datasets has thus far hampered a direct intercomparison of different approaches. Here…

天体物理仪器与方法 · 物理学 2020-10-05 Sara Jamal , Joshua S. Bloom

In the context of medical imaging and machine learning, one of the most pressing challenges is the effective adaptation of pre-trained models to specialized medical contexts. Despite the availability of advanced pre-trained models, their…

计算机视觉与模式识别 · 计算机科学 2024-06-17 Ana Davila , Jacinto Colan , Yasuhisa Hasegawa

Wide field small aperture telescopes are widely used for optical transient observations. Detection and classification of astronomical targets in observed images are the most important and basic step. In this paper, we propose an…

天体物理仪器与方法 · 物理学 2020-05-06 Peng Jia , Qiang Liu , Yongyang Sun

Presently, deep learning and convolutional neural networks (CNNs) are widely used in the fields of image processing, image classification, object identification and many more. In this work, we implemented convolutional neural network based…

计算机视觉与模式识别 · 计算机科学 2024-11-13 Jai G Singla , Bakul Vaghela

Mergers are an important aspect of galaxy formation and evolution. We aim to test whether deep learning techniques can be used to reproduce visual classification of observations, physical classification of simulations and highlight any…

星系天体物理 · 物理学 2019-06-12 W. J. Pearson , L. Wang , J. W. Trayford , C. E. Petrillo , F. F. S. van der Tak

This study investigate the effectiveness of using Deep Learning (DL) for the classification of planetary nebulae (PNe). It focusses on distinguishing PNe from other types of objects, as well as their morphological classification. We adopted…

Studying the cosmological sources at their cosmological rest-frames is crucial to track the cosmic history and properties of compact objects. In view of the increasing data volume of existing and upcoming telescopes/detectors, we here…

高能天体物理现象 · 物理学 2022-01-11 F. Rastegar Nia , M. T. Mirtorabi , R. Moradi , A. Vafaei. Sadr , Y. Wang

In astronomy, neural networks are often trained on simulation data with the prospect of being used on telescope observations. Unfortunately, training a model on simulation data and then applying it to instrument data leads to a substantial…

天体物理仪器与方法 · 物理学 2021-07-16 A. Ćiprijanović , D. Kafkes , K. Downey , S. Jenkins , G. N. Perdue , S. Madireddy , T. Johnston , G. F. Snyder , B. Nord

Large-scale astronomical surveys have the potential to capture data on large numbers of strongly gravitationally lensed supernovae (LSNe). To facilitate timely analysis and spectroscopic follow-up before the supernova fades, an LSN needs to…

Large sky spectroscopic surveys have reached the scale of photometric surveys in terms of sample sizes and data complexity. These huge datasets require efficient, accurate, and flexible automated tools for data analysis and science…

With several new large-scale surveys on the horizon, including LSST, TESS, ZTF, and Evryscope, faster and more accurate analysis methods will be required to adequately process the enormous amount of data produced. Deep learning, used in…

天体物理仪器与方法 · 物理学 2023-06-02 Emily M. Boudreaux

Satellite image classification is a challenging problem that lies at the crossroads of remote sensing, computer vision, and machine learning. Due to the high variability inherent in satellite data, most of the current object classification…

计算机视觉与模式识别 · 计算机科学 2015-09-14 Saikat Basu , Sangram Ganguly , Supratik Mukhopadhyay , Robert DiBiano , Manohar Karki , Ramakrishna Nemani

One of the main challenges since the advancement of convolutional neural networks is how to connect the extracted feature map to the final classification layer. VGG models used two sets of fully connected layers for the classification part…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Mohammad Rahimzadeh , AmirAli Askari , Soroush Parvin , Elnaz Safi , Mohammad Reza Mohammadi

Satellite image classification is a challenging problem that lies at the crossroads of remote sensing, computer vision, and machine learning. Due to the high variability inherent in satellite data, most of the current object classification…

计算机视觉与模式识别 · 计算机科学 2019-11-19 Qun Liu , Saikat Basu , Sangram Ganguly , Supratik Mukhopadhyay , Robert DiBiano , Manohar Karki , Ramakrishna Nemani

Most existing star-galaxy classifiers use the reduced summary information from catalogs, requiring careful feature extraction and selection. The latest advances in machine learning that use deep convolutional neural networks allow a machine…

天体物理仪器与方法 · 物理学 2016-10-20 Edward J. Kim , Robert J. Brunner

In the context of radio galaxy classification, most state-of-the-art neural network algorithms have been focused on single survey data. The question of whether these trained algorithms have cross-survey identification ability or can be…

天体物理仪器与方法 · 物理学 2019-07-31 Hongming Tang , Anna M. M. Scaife , J. P. Leahy

Galaxy surveys are crucial for studying large-scale structure (LSS) and cosmology, yet they face limitations--imaging surveys provide extensive sky coverage but suffer from photo-$z$ uncertainties, while spectroscopic surveys yield precise…

天体物理仪器与方法 · 物理学 2025-08-26 Wenying Du , Xiaolin Luo , Zhujun Jiang , Xu Xiao , Qiufan Lin , Xin Wang , Yang Wang , Fenfen Yin , Le Zhang , Xiao-Dong Li
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