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While classical skyline queries identify interesting data within large datasets, flexible skylines introduce preferences through constraints on attribute weights, and further reduce the data returned. However, computing these queries can be…

数据库 · 计算机科学 2025-01-08 Emilio De Lorenzis , Davide Martinenghi

We present the results of Green Bank Telescope (GBT) observations of two pulsars discovered with the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) during the 19-beam Commensal Radio Astronomy FasT Survey (CRAFTS). We…

高能天体物理现象 · 物理学 2026-04-09 Victoria A. Blackmon , Maura A. McLaughlin , De Zhao , Jianping Yuan , Qingdong Wu , Chen-Chen Miao , Meng-Yao Xue , Di Li , Wei-Wei Zhu

The Wide Field Survey Telescope (WFST) is a dedicated photometric surveying facility built jointly by the University of Science and Technology of China (USTC) and the Purple Mountain Observatory (PMO). Since many of its scientific…

Relativistic binary pulsars orbiting white dwarfs and neutron stars have already provided excellent tests of gravity. However, despite observational efforts, a pulsar orbiting a black hole has remained elusive. One possible explanation is…

Diffusion models have recently emerged as a powerful approach for trajectory planning. However, their inherently non-sequential nature limits their effectiveness in long-horizon reasoning tasks at test time. The recently proposed Monte…

人工智能 · 计算机科学 2025-10-27 Jaesik Yoon , Hyeonseo Cho , Yoshua Bengio , Sungjin Ahn

Pipeline parallelism is an essential distributed parallelism method. Increasingly complex and diverse DNN models necessitate meticulously customized pipeline schedules for performance. However, existing practices typically rely on…

分布式、并行与集群计算 · 计算机科学 2025-10-10 Lijuan Jiang , Xingjian Qian , Zhenxiang Ma , Zan Zong , Hengjie Li , Chao Yang , Jidong Zhai

Parsing is essential for a wide range of use cases, such as stream processing, bulk loading, and in-situ querying of raw data. Yet, the compute-intense step often constitutes a major bottleneck in the data ingestion pipeline, since parsing…

数据库 · 计算机科学 2020-04-16 Elias Stehle , Hans-Arno Jacobsen

The rapid updates in error-resilient applications along with their quest for high throughput have motivated designing fast approximate functional units for Field-Programmable Gate Arrays (FPGAs). Studies that proposed imprecise functional…

硬件体系结构 · 计算机科学 2022-06-29 Zahra Ebrahimi , Muhammad Zaid , Mark Wijtvliet , Akash Kumar

Glitches are the observational manifestations of superfluidity inside neutron stars. The aim of this paper is to describe an automated glitch detection pipeline, which can alert the observers on possible real-time detection of rotational…

天体物理仪器与方法 · 物理学 2021-07-12 Jaikhomba Singha , Avishek Basu , M. A. Krishnakumar , Bhal Chandra Joshi , P. Arumugam

We report the follow-up of 10 pulsars discovered by the Five-hundred-meter Aperture Spherical radio-Telescope (FAST) during its commissioning. The pulsars were discovered at a frequency of 500-MHz using the ultra-wide-band (UWB) receiver in…

We report a novel application of graphics processing units (GPUs) for the purpose of accelerating the search pipelines for gravitational waves from coalescing binaries of compact objects. A speed-up of 16 fold has been achieved compared…

广义相对论与量子宇宙学 · 物理学 2010-05-25 Shin Kee Chung , Linqing Wen , David Blair , Kipp Cannon , Amitava Datta

A new Bayesian software package for the analysis of pulsar timing data is presented in the form of TempoNest which allows for the robust determination of the non-linear pulsar timing solution simultaneously with a range of additional…

天体物理仪器与方法 · 物理学 2013-12-04 Lindley Lentati , Paul Alexander , Michael P. Hobson , Farhan Feroz , Rutger van Haasteren , Kejia Lee , Ryan M. Shannon

We propose a parareal based time parallelization scheme in the phase-space for the particle-in-Fourier (PIF) discretization of the Vlasov-Poisson system used in kinetic plasma simulations. We use PIF with a coarse tolerance for the…

数值分析 · 数学 2025-06-17 Sriramkrishnan Muralikrishnan , Robert Speck

This research work focuses on the design of a high-resolution fast Fourier transform (FFT) /inverse fast Fourier transform (IFFT) processors for constraints analysis purpose. Amongst the major setbacks associated with such high resolution,…

信号处理 · 电气工程与系统科学 2018-06-13 Rozita Teymourzadeh , Mometo Jim Abigo , Mok Vee Hoong

Scanning probe microscopy (SPM) is ubiquitous in nanoscale science allowing the observation of features in real space down to the angstrom resolution. The scanning nature of SPM, wherein a sharp tip rasters the surface during which a…

仪器与探测器 · 物理学 2024-11-20 Maxime Le Ster , Sławomir Pawłowski , Iaroslav Lutsyk , Paweł Janusz Kowalczyk

This paper presents a practical approach to digital pulse processing, emphasizing simplicity and efficiency. We advocate for a balanced software design, flat data structures, the use of the ROOT C++ interpreter, and a combination of…

仪器与探测器 · 物理学 2025-07-16 Jing Liu

We introduce an open source python framework named PHS - Parallel Hyperparameter Search to enable hyperparameter optimization on numerous compute instances of any arbitrary python function. This is achieved with minimal modifications inside…

机器学习 · 计算机科学 2020-02-28 Peter Michael Habelitz , Janis Keuper

The exponential growth of data from modern radio telescopes presents a significant challenge to traditional single-pulse search algorithms, which are computationally intensive and prone to high false-positive rates due to Radio Frequency…

天体物理仪器与方法 · 物理学 2026-04-15 Bin Zhang , Yabiao Wang , Xiaoyao Xie , Shanping You , Xuhong Yu , Qiuhua Li , Hongwei Li , Shaowen Du , Chenchen Miao , Dengke Zhou , Jianhua Fang , Jiafu Wu , Pei Wang , Di Li

This paper revisits the design and optimization of parallel fast finite impulse response (FIR) filters using polyphase decomposition and iterated fast FIR algorithms (FFAs). Parallel FIR filtering enhances computational efficiency and…

信号处理 · 电气工程与系统科学 2026-01-23 Keshab K. Parhi

This paper presents the SPIIR pipeline used for public alerts during the third advanced LIGO and Virgo observation run (O3 run). The SPIIR pipeline uses infinite impulse response (IIR) filters to perform extremely low-latency matched…

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