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Monitoring the status of large computing systems is essential to identify unexpected behavior and improve their performance and uptime. However, due to the large-scale and distributed design of such computing systems as well as a large…

分布式、并行与集群计算 · 计算机科学 2024-02-09 Tom Richard Vargis , Siavash Ghiasvand

A review of a renewed effort to recalculate astrophysical opacities using the R-Matrix method is presented. The computational methods and new extensions are described. Resulting enhancements found in test calculations under stellar interior…

太阳与恒星天体物理 · 物理学 2018-01-09 Anil K. Pradhan , Sultana N. Nahar

Systematic uncertainties that have been subdominant in past large-scale structure (LSS) surveys are likely to exceed statistical uncertainties of current and future LSS data sets, potentially limiting the extraction of cosmological…

宇宙学与河外天体物理 · 物理学 2015-10-21 Tim Eifler , Elisabeth Krause , Scott Dodelson , Andrew Zentner , Andrew Hearin , Nickolay Gnedin

Errors are prevalent in time series data, such as GPS trajectories or sensor readings. Existing methods focus more on anomaly detection but not on repairing the detected anomalies. By simply filtering out the dirty data via anomaly…

数据库 · 计算机科学 2020-03-30 Aoqian Zhang , Shaoxu Song , Jianmin Wang , Philip S. Yu

Performance-critical industrial applications, including large-scale program, network, and distributed system analyses, are increasingly reliant on recursive queries for data analysis. Yet traditional relational algebra-based query…

数据库 · 计算机科学 2024-03-20 Anna Herlihy , Guillaume Martres , Anastasia Ailamaki , Martin Odersky

Randomized controlled trials generate experimental variation that can credibly identify causal effects, but often suffer from limited scale, while observational datasets are large, but often violate desired identification assumptions. To…

计量经济学 · 经济学 2023-12-27 George Z. Gui

EMMA is a cosmological simulation code aimed at investigating the reionization epoch. It handles simultaneously collisionless and gas dynamics, as well as radiative transfer physics using a moment-based description with the M1…

天体物理仪器与方法 · 物理学 2015-10-07 Dominique Aubert , Nicolas Deparis , Pierre Ocvirk

The task of compression of data -- as stated by the source coding theorem -- is one of the cornerstones of information theory. Data compression usually exploits statistical redundancies in the data according to its prior distribution.…

量子物理 · 物理学 2021-01-08 Matheus Capela , Fabio Costa

We have created a new image analysis pipeline to reprocess images taken by the Near Earth Asteroid Tracking survey and have applied it to ten nights of observations. This work is the first large-scale reprocessing of images from an asteroid…

Local reconstruction analysis (LRA) is a powerful and flexible technique to study images reconstructed from discrete generalized Radon transform (GRT) data, $g=\mathcal R f$. The main idea of LRA is to obtain a simple formula to accurately…

数值分析 · 数学 2025-06-27 Alexander Katsevich

We present EDA: easy data augmentation techniques for boosting performance on text classification tasks. EDA consists of four simple but powerful operations: synonym replacement, random insertion, random swap, and random deletion. On five…

计算与语言 · 计算机科学 2019-08-27 Jason Wei , Kai Zou

We consider the problem of reconstructing a low rank matrix from noisy observations of a subset of its entries. This task has applications in statistical learning, computer vision, and signal processing. In these contexts, "noise"…

机器学习 · 统计学 2010-01-05 Raghunandan H. Keshavan , Andrea Montanari

We propose a physics-based regularization technique for function learning, inspired by statistical mechanics. By drawing an analogy between optimizing the parameters of an interpolator and minimizing the energy of a system, we introduce…

机器学习 · 计算机科学 2025-08-20 Abhisek Ganguly , Alessandro Gabbana , Vybhav Rao , Sauro Succi , Santosh Ansumali

Real-world image restoration is challenging due to complex and interacting mixed degradations. Recent agent-based approaches address this problem by composing multiple task-specific restoration tools. However, empirical analysis reveals…

计算机视觉与模式识别 · 计算机科学 2026-05-22 Feng Zhu , Shuyang Xie , Yihan Zeng , Ming Liu , Wangmeng Zuo

Missing data are a common problem in experimental and observational physics. They can be caused by various sources, either an instrument's saturation, or a contamination from an external event, or a data loss. In particular, they can have a…

天体物理仪器与方法 · 物理学 2016-01-20 Joel Bergé , Sandrine Pires , Quentin Baghi , Pierre Touboul , Gilles Métris

Clustering is an effective tool for astronomical spectral analysis, to mine clustering patterns among data. With the implementation of large sky surveys, many clustering methods have been applied to tackle spectroscopic and photometric data…

天体物理仪器与方法 · 物理学 2022-12-19 Haifeng Yang , Chenhui Shi , Jianghui Cai , Lichan Zhou , Yuqing Yang , Xujun Zhao , Yanting He , Jing Hao

The accuracy of astrometric observations conducted via a space-borne optical interferometer orbiting the Earth is expected to approach a few microarcseconds. Data processing of such extremely high-precision measurements requires access to a…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Sergei M. Kopeikin , N. V. Shuygina , M. V. Vasilyev , E. I. Yagudina , L. I. Yagudin

With the randomization approach, sensitive data items of records are randomized to protect privacy of individuals while allowing the distribution information to be reconstructed for data analysis. In this paper, we distinguish between…

数据库 · 计算机科学 2012-02-16 Ke Wang , Chao Han , Ada Waichee Fu

Memoryless computation is a new technique to compute any function of a set of registers by updating one register at a time while using no memory. Its aim is to emulate how computations are performed in modern cores, since they typically…

计算复杂性 · 计算机科学 2013-10-23 Peter J. Cameron , Ben Fairbairn , Maximilien Gadouleau

The next generation of telescopes such as the SKA and the Rubin Observatory will produce enormous data sets, requiring automated anomaly detection to enable scientific discovery. Here, we present an overview and friendly user guide to the…

天体物理仪器与方法 · 物理学 2022-01-26 Michelle Lochner , Bruce A. Bassett
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