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With an aging and growing population, the number of women requiring either screening or symptomatic mammograms is increasing. To reduce the number of mammograms that need to be read by a radiologist while keeping the diagnostic accuracy the…

计算机视觉与模式识别 · 计算机科学 2018-11-08 Trent Kyono , Fiona J. Gilbert , Mihaela van der Schaar

Context. Previous attempts to separate Small Magellanic Cloud (SMC) stars from the Milky Way (MW) foreground stars are based only on the proper motions of the stars. Aims. In this paper we develop a statistical classification technique to…

星系天体物理 · 物理学 2023-04-05 Ó. Jiménez-Arranz , M. Romero-Gómez , X. Luri , E. Masana

We investigate star-galaxy classification for astronomical surveys in the context of four methods enabling the interpretation of black-box machine learning systems. The first is outputting and exploring the decision boundaries as given by…

天体物理仪器与方法 · 物理学 2018-09-26 Xan Morice-Atkinson , Ben Hoyle , David Bacon

Context. Understanding the formation and evolution of star clusters in the Milky Way requires precise identification of clusters that form binary or multiple systems. Such systems offer valuable insight into the dynamical processes and…

星系天体物理 · 物理学 2025-01-22 Tali Palma , Valeria Coenda , Gustavo Baume , Carlos Feinstein

Galaxy-scale strong lenses in galaxy clusters provide a unique tool to investigate their inner mass distribution and the sub-halo density profiles in the low-mass regime, which can be compared with the predictions from cosmological…

宇宙学与河外天体物理 · 物理学 2023-08-09 G. Angora , P. Rosati , M. Meneghetti , M. Brescia , A. Mercurio , C. Grillo , P. Bergamini , A. Acebron , G. Caminha , M. Nonino , L. Tortorelli , L. Bazzanini , E. Vanzella

We present a machine-learning approach for estimating galaxy cluster masses from Chandra mock images. We utilize a Convolutional Neural Network (CNN), a deep machine learning tool commonly used in image recognition tasks. The CNN is trained…

宇宙学与河外天体物理 · 物理学 2019-06-20 M. Ntampaka , J. ZuHone , D. Eisenstein , D. Nagai , A. Vikhlinin , L. Hernquist , F. Marinacci , D. Nelson , R. Pakmor , A. Pillepich , P. Torrey , M. Vogelsberger

Most existing star-galaxy classifiers depend on the reduced information from catalogs, necessitating careful data processing and feature extraction. In this study, we employ a supervised machine learning method (GoogLeNet) to automatically…

星系天体物理 · 物理学 2024-09-23 Shiliang Zhang , Guanwen Fang , Jie Song , Ran Li , Yizhou Gu , Zesen Lin , Chichun Zhou , Yao Dai , Xu Kong

Understanding the impact of halo properties beyond halo mass on the clustering of galaxies (namely galaxy assembly bias) remains a challenge for contemporary models of galaxy clustering. We explore the use of machine learning to predict the…

宇宙学与河外天体物理 · 物理学 2021-09-15 Xiaoju Xu , Saurabh Kumar , Idit Zehavi , Sergio Contreras

Cluster of microcalcifications can be an early sign of breast cancer. In this paper we propose a novel approach based on convolutional neural networks for the detection and segmentation of microcalcification clusters. In this work we used…

计算机视觉与模式识别 · 计算机科学 2018-09-12 Gabriele Valvano , Gianmarco Santini , Nicola Martini , Andrea Ripoli , Chiara Iacconi , Dante Chiappino , Daniele Della Latta

We apply a novel method with machine learning to calibrate sub-grid models within numerical simulation codes to achieve convergence with observations and between different codes. It utilizes active learning and neural density estimators.…

星系天体物理 · 物理学 2022-10-07 Boon Kiat Oh , Hongjun An , Eun-jin Shin , Ji-hoon Kim , Sungwook E. Hong

Machine-learning (ML) algorithms will play a crucial role in studying the large datasets delivered by new facilities over the next decade and beyond. Here, we investigate the capabilities and limits of such methods in finding galaxies with…

天体物理仪器与方法 · 物理学 2019-08-22 Andreas L. Faisst , Abhishek Prakash , Peter L. Capak , Bomee Lee

Breast cancer (BC) remains a significant global health challenge, with personalized treatment selection complicated by the disease's molecular and clinical heterogeneity. BC treatment decisions rely on various patient-specific clinical…

应用统计 · 统计学 2025-07-10 Md Nahid Hasan , Md Monzur Murshed , Md Mahadi Hasan , Faysal A. Chowdhury

We present a new tool for colour-magnitude diagram (CMD) studies, $Powerful~CMD$. This tool is built on the basis of the advanced stellar population synthesis (ASPS) model, in which single stars, binary stars, rotating stars, and star…

星系天体物理 · 物理学 2017-07-19 Zhong-Mu Li , Cai-Yan Mao , Qi-Ping Luo , Zhou Fan , Wen-Chang Zhao , Li Chen , Ru-Xi Li , Jian-Po Guo

We develop novel clustering algorithms for functional data when the number of clusters $K$ is unknown and also when it is prefixed. These algorithms are developed based on the Maximum Mean Discrepancy (MMD) measure between two sets of…

统计方法学 · 统计学 2025-07-16 Sourav Chakrabarty , Anirvan Chakraborty , Shyamal K. De

We present an automated statistical method that uses medium-resolution spectroscopic observations of a set of stars to select those that show evidence of possessing significant amounts of neutron-capture elements. Our tool was tested…

天体物理仪器与方法 · 物理学 2019-10-30 G. Navó , J. L. Tous , J. M. Solanes

Context.Identification of new star cluster candidates in M31 is fundamental for the study of the M31 stellar cluster system. The machine-learning method convolutional neural network (CNN) is an efficient algorithm for searching for new M31…

星系天体物理 · 物理学 2022-04-15 Shoucheng Wang , Bingqiu Chen , Jun Ma , Qian Long , Haibo Yuan , Dezi Liu , Zhimin Zhou , Wei Liu , Jiamin Chen , Zizhao He

The two-step galaxy morphology classification framework {\tt USmorph} successfully combines unsupervised machine learning (UML) with supervised machine learning (SML) methods. To enhance the UML step, we employed a dual-encoder architecture…

星系天体物理 · 物理学 2025-12-22 Xiaolei Yin , Guanwen Fang , Shiying Lu , Zesen Lin , Yao Dai , Chichun Zhou

We present a machine learning approach for estimating galaxy cluster masses, trained using both Chandra and eROSITA mock X-ray observations of 2,041 clusters from the Magneticum simulations. We train a random forest regressor, an ensemble…

宇宙学与河外天体物理 · 物理学 2019-10-14 Sheridan B. Green , Michelle Ntampaka , Daisuke Nagai , Lorenzo Lovisari , Klaus Dolag , Dominique Eckert , John A. ZuHone

We present the list of potential multiple star clusters from the central part of the SMC. Presented systems were selected from the catalog of star clusters from the SMC. We find 23 suspected cluster pairs and 4 triple systems. The…

天体物理学 · 物理学 2007-05-23 G. Pietrzynski , A. Udalski

Convolutional Neural Networks (CNNs) have demonstrated remarkable prowess in the field of computer vision. However, their opaque decision-making processes pose significant challenges for practical applications. In this study, we provide…

机器学习 · 计算机科学 2024-12-17 Hui Dou , Xinyu Mu , Mengjun Yi , Feng Han , Jian Zhao , Furao Shen