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Not only source catalogs are extracted from astronomy observations. Their sky coverage is always carefully recorded and used in statistical analyses, such as correlation and luminosity function studies. Here we present a novel method for…

天体物理仪器与方法 · 物理学 2014-03-20 Dongwei Fan , Tamás Budavári , Alexander S. Szalay , Chenzhou Cui , Yongheng Zhao

It has been recently shown that a powerful way to constrain cosmological parameters from galaxy redshift surveys is to train graph neural networks to perform field-level likelihood-free inference without imposing cuts on scale. In…

Sky surveys represent a fundamental data basis for astronomy. We use them to map in a systematic way the universe and its constituents, and to discover new types of objects or phenomena. We review the subject, with an emphasis on the…

天体物理仪器与方法 · 物理学 2015-05-20 S. G. Djorgovski , A. A. Mahabal , A. J. Drake , M. J. Graham , C. Donalek

With growing data volumes from synoptic surveys, astronomers must become more abstracted from the discovery and introspection processes. Given the scarcity of follow-up resources, there is a particularly sharp onus on the frameworks that…

Detecting digital face manipulation in images and video has attracted extensive attention due to the potential risk to public trust. To counteract the malicious usage of such techniques, deep learning-based deepfake detection methods have…

计算机视觉与模式识别 · 计算机科学 2023-04-14 Yuhang Lu , Touradj Ebrahimi

Ensuring safe adoption of AI tools in healthcare hinges on access to sufficient data for training, testing and validation. In response to privacy concerns and regulatory requirements, using synthetic data has been suggested. Synthetic data…

The large amount of cosmological data already available (and in the near future) makes necessary the development of efficient numerical codes. Many software products have been implemented to perform cosmological analyses considering one or…

宇宙学与河外天体物理 · 物理学 2022-03-16 Sandro Dias Pinto Vitenti , Mariana Penna-Lima

We present a collection of new, open-source computational tools for numerically modeling recent large-scale observational data sets using modern cosmology theory. Specifically, these tools will allow both students and researchers to…

宇宙学与河外天体物理 · 物理学 2013-05-22 Jacob Moldenhauer , Larry Engelhardt , Keenan Stone , Ezekiel Shuler

Cross-matching operation, which is to find corresponding data for the same celestial object or region from multiple catalogues,is indispensable to astronomical data analysis and research. Due to the large amount of astronomical catalogues…

天体物理仪器与方法 · 物理学 2023-01-19 Yajie Zhang , Ce Yu , Chao Sun , Jian Xiao , Kun Li , Yifei Mu , Chenzhou Cui

This paper presents a systematic literature review focusing on the application of machine learning techniques for deriving observational constraints in cosmology. The goal is to evaluate and synthesize existing research to identify…

宇宙学与河外天体物理 · 物理学 2025-10-14 Luis Rojas , Sebastián Espinoza , Esteban González , Carlos Maldonado , Fei Luo

Signal quality assessment (SQA) is required for monitoring the reliability of data acquisition systems, especially in AI-driven Predictive Maintenance (PMx) application contexts. SQA is vital for addressing "silent failures" of data…

机器学习 · 计算机科学 2024-02-02 Chufan Gao , Nicholas Gisolfi , Artur Dubrawski

Current and upcoming cosmological observations allow us to probe structures on smaller and smaller scales, entering highly nonlinear regimes. In order to obtain theoretical predictions in these regimes, large cosmological simulations have…

In the current data-driven science era, it is needed that data analysis techniques has to quickly evolve to face with data whose dimensions has increased up to the Petabyte scale. In particular, being modern astrophysics based on…

天体物理仪器与方法 · 物理学 2017-06-14 Giuseppe Riccio , Massimo Brescia , Stefano Cavuoti , Amata Mercurio , Anna Maria Di Giorgio , Sergio Molinari

This white paper describes the LSST Dark Energy Science Collaboration (DESC), whose goal is the study of dark energy and related topics in fundamental physics with data from the Large Synoptic Survey Telescope (LSST). It provides an…

宇宙学与河外天体物理 · 物理学 2012-11-05 LSST Dark Energy Science Collaboration

Joint studies of imaging and spectroscopic samples, informed by theory and simulations, offer the potential for comprehensive tests of the cosmological model over redshifts z<1.5. Spectroscopic galaxy samples at these redshifts can be…

宇宙学与河外天体物理 · 物理学 2022-03-15 Kyle Dawson , Andrew Hearin , Katrin Heitmann , Mustapha Ishak , Johannes Ulf Lange , Martin White , Rongpu Zhou

Document quality assessment is critical for a wide range of applications including document digitization, OCR, and archival. However, existing approaches often struggle to provide accurate and robust quality scores, limiting their…

计算机视觉与模式识别 · 计算机科学 2025-07-18 Junjie Gao , Runze Liu , Yingzhe Peng , Shujian Yang , Jin Zhang , Kai Yang , Zhiyuan You

Visual Question Answering (VQA) is increasingly used in diverse applications ranging from general visual reasoning to safety-critical domains such as medical imaging and autonomous systems, where models must provide not only accurate…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Xingjian Diao , Weiyi Wu , Keyi Kong , Peijun Qing , Xinwen Xu , Ming Cheng , Soroush Vosoughi , Jiang Gui

Nowadays, the use of synthetic data has gained popularity as a cost-efficient strategy for enhancing data augmentation for improving machine learning models performance as well as addressing concerns related to sensitive data privacy.…

机器学习 · 计算机科学 2025-10-27 Ioannis E. Livieris , Nikos Alimpertis , George Domalis , Dimitris Tsakalidis

Scientific images fundamentally differ from natural and AI-generated images in that they encode structured domain knowledge rather than merely depict visual scenes. Assessing their quality therefore requires evaluating not only perceptual…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Wenzhe Li , Liang Chen , Junying Wang , Yijing Guo , Ye Shen , Farong Wen , Chunyi Li , Zicheng Zhang , Guangtao Zhai