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Given the basic parameters of a cosmic shear weak lensing survey, how well can systematic errors due to anisotropy in the point spread function (PSF) be corrected? The largest source of error in this correction to date has been the…

天体物理学 · 物理学 2009-11-13 Bhuvnesh Jain , Mike Jarvis , Gary Bernstein

Time-based indoor positioning techniques rely on multiple access points (APs) and measurements between the user equipment (UE) and the APs. In dense indoor environments, occlusion-induced non-line-of-sight (NLoS) propagation introduces…

信号处理 · 电气工程与系统科学 2026-05-20 Neetu R. R , Shrihari Vasudevan , Ranjani H. G

Scan line levelling, a ubiquitous and often necessary step in AFM data processing, can cause a severe bias on measured roughness parameters such as mean square roughness or correlation length. Although bias estimates have been formulated,…

数据分析、统计与概率 · 物理学 2024-06-06 David Nečas

We present a novel Parameter-Efficient Fine-Tuning (PEFT) method, dubbed as Adaptive Freezing of Low Rank Adaptation (AFLoRA). Specifically, for each pre-trained frozen weight tensor, we add a parallel path of trainable low-rank matrices,…

计算与语言 · 计算机科学 2024-04-17 Zeyu Liu , Souvik Kundu , Anni Li , Junrui Wan , Lianghao Jiang , Peter Anthony Beerel

We present an approach to reduce the performance disparity between geographic regions without degrading performance on the overall user population for ASR. A popular approach is to fine-tune the model with data from regions where the ASR…

音频与语音处理 · 电气工程与系统科学 2024-02-09 Viet Anh Trinh , Pegah Ghahremani , Brian King , Jasha Droppo , Andreas Stolcke , Roland Maas

Recently there has been growing interest in the use of aerial and satellite map data for autonomous vehicles, primarily due to its potential for significant cost reduction and enhanced scalability. Despite the advantages, aerial data also…

机器人学 · 计算机科学 2025-03-19 Yi Yang , Xuran Zhao , H. Charles Zhao , Shumin Yuan , Samuel M. Bateman , Tiffany A. Huang , Chris Beall , Will Maddern

We present a cost-efficient and versatile method to map an unknown 3D freeform surface using only sparse measurements while the end-effector of a robotic manipulator moves along the surface. The geometry is locally approximated by a plane,…

机器人学 · 计算机科学 2021-10-08 Manuel Amersdorfer , Thomas Meurer

Knowing where livestock are located enables optimized management and mustering. However, Australian farms are large meaning that many of Australia's livestock are unmonitored which impacts farm profit, animal welfare and the environment.…

计算机视觉与模式识别 · 计算机科学 2022-01-21 Jasper Brown , Yongliang Qiao , Cameron Clark , Sabrina Lomax , Khalid Rafique , Salah Sukkarieh

For beamforming ultrasound (US) signals, typically a spatially constant speed-of-sound (SoS) is assumed to calculate delays. As SoS in tissue may vary relatively largely, this approximation may cause wavefront aberrations, thus degrading…

图像与视频处理 · 电气工程与系统科学 2019-12-12 Richard Rau , Dieter Schweizer , Valery Vishnevskiy , Orcun Goksel

The single sideband (SSB) framework of analytical electron ptychography can account for the presence of residual geometrical aberrations induced by the probe-forming lens. However, the accuracy of this aberration correction method is highly…

This paper introduces two machine learning optimization algorithms to significantly enhance position estimation in Reconfigurable Intelligent Surface (RIS) aided localization for mobile user equipment in Non-Line-of-Sight conditions.…

信号处理 · 电气工程与系统科学 2024-05-06 Rafael A. Aguiar , Nuno Paulino , Luís M. Pessoa

Optical quasar spectra can be used to trace variations of the fine-structure constant alpha. Controversial results that have been published in last years suggest that in addition to to wavelength calibration problems systematic errors might…

宇宙学与河外天体物理 · 物理学 2015-06-16 Nils Prause , Dieter Reimers

This letter presents a comprehensive framework analyzing the asymptotic error performance of a multiple-input-multiple-output (MIMO) wireless system employing spatial modulation (SM) with maximum likelihood detection and perfect channel…

信息论 · 计算机科学 2014-06-02 Kostas P. Peppas , Martin Zamkotsian , Fotis Lazarakis , Panayotis G. Cottis

As the vulnerabilities of global navigation satellite systems (GNSS) have become more widely recognized, the need for complementary navigation systems has grown. Medium frequency ranging mode (MF R-Mode) has gained attention as an effective…

信号处理 · 电气工程与系统科学 2025-09-03 Jongmin Park , Junwoo Song , Taewon Kang , Jaewon Yu , Pyo-Woong Son

Density functional theory offers accurate structure prediction at acceptable computational cost, but commonly used approximations suffer from delocalization error; this results in inaccurate predictions of quantities such as energy band…

材料科学 · 物理学 2022-08-17 Aaron Mahler , Jacob Z. Williams , Neil Qiang Su , Weitao Yang

In this paper, a symbol error rate (SER) analysis is provided to evaluate the impact of localization inaccuracy on the communication performance under Zero-Forcing (ZF) and Minimum Mean-Square Error (MMSE) equalizers. Specifically, we adopt…

信息论 · 计算机科学 2025-12-01 Shuaishuai Han , Emad Alsusa , Arafat Al-Dweik

Based on the background of the 2021 Higher Education Club Cup National College Students Mathematical Contest in Modeling A, according to the relevant data of the China Sky Eye (FAST) radio telescope, the main cable nodes and actuators are…

最优化与控制 · 数学 2022-04-13 Tongyue Shi , Siyu Tao , Haining Wang

We propose a new estimation methodology to address the presence of covariate measurement error by exploiting the availability of spatial data. The approach uses neighboring observations as repeated measurements, after suitably controlling…

计量经济学 · 经济学 2025-11-06 Susanne M. Schennach , Vincent Starck

Training autonomous vehicles requires lots of driving sequences in all situations\cite{zhao2016}. Typically a simulation environment (software-in-the-loop, SiL) accompanies real-world test drives to systematically vary environmental…

图像与视频处理 · 电气工程与系统科学 2018-01-09 Christian Wittpahl , Hatem Ben Zakour , Matthias Lehmann , Alexander Braun

Anomaly detection and localization in medical imaging remain critical challenges in healthcare. This paper introduces Spatial-MSMA (Multiscale Score Matching Analysis), a novel unsupervised method for anomaly localization in volumetric…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Ahsan Mahmood , Junier Oliva , Martin Styner