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Traditional radio interferometric correlators produce regular-gridded samples of the true $uv$-distribution by averaging the signal over constant, discrete time-frequency intervals. This regular sampling and averaging then translate to be…

天体物理仪器与方法 · 物理学 2018-03-28 M. Atemkeng , O. Smirnov , C. Tasse , G. Foster , A. Keimpema , Z. Paragi , J. Jonas

This paper presents a reliability-based decoding scheme for variable-length coding with feedback and demonstrates via simulation that it can achieve higher rates than Polyanskiy et al.'s random coding lower bound for variable-length…

信息论 · 计算机科学 2016-11-17 Adam R. Williamson , Tsung-Yi Chen , Richard D. Wesel

This paper presents a variable-length decision-feedback scheme that uses tail-biting convolutional codes and the tail-biting Reliability-Output Viterbi Algoritm (ROVA). Comparing with recent results in finite-blocklength information theory,…

信息论 · 计算机科学 2016-11-17 Adam R. Williamson , Tsung-Yi Chen , Richard D. Wesel

This paper develops a framework that can perform denoising, dereverberation, and source separation accurately by using a relatively small number of microphones. It has been empirically confirmed that Independent Vector Analysis (IVA) can…

音频与语音处理 · 电气工程与系统科学 2022-02-25 Tomohiro Nakatani , Rintaro Ikeshita , Keisuke Kinoshita , Hiroshi Sawada , Naoyuki Kamo , Shoko Araki

This paper presents a detailed analysis of the applicability and benefits of baseline dependent averaging (BDA) in modern radio interferometers and in particular the Square Kilometre Array (SKA). We demonstrate that BDA does not affect the…

天体物理仪器与方法 · 物理学 2018-02-27 S. J. Wijnholds , A. G. Willis , S. Salvini

In radio interferometry, observed visibilities are intrinsically sampled at some interval in time and frequency. Modern interferometers are capable of producing data at very high time and frequency resolution; practical limits on storage…

天体物理仪器与方法 · 物理学 2016-07-15 M. T. Atemkeng , O. M. Smirnov , C. Tasse , G. Foster , J. Jonas

Subspace methods like canonical variate analysis (CVA) are regression based methods for the estimation of linear dynamic state space models. They have been shown to deliver accurate (consistent and asymptotically equivalent to quasi maximum…

统计方法学 · 统计学 2025-02-17 Dietmar Bauer

The time-dependent phase change of x rays after transmission through a sample has been determined experimentally. We used an x-ray interferometer with a reference sample containing sharp nuclear resonances to prepare a phase-controlled…

光学 · 物理学 2007-05-23 Wolfgang Sturhahn , Caroline L'abbe , Thomas S. Toellner

UAV action recognition faces a deployment shift that standard benchmarks often obscure: a model trained on UAV footage captured from low-depression viewpoints may be required to recognize the same action classes from high-depression…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Yu Xia , Zhengbo Zhang , Shuaihu Zhang , Zhigang Tu

In real-world deployment, vision-language models often encounter disturbances such as weather, occlusion, and camera motion. Under such conditions, their understanding and reasoning degrade substantially, revealing a gap between clean,…

计算机视觉与模式识别 · 计算机科学 2026-04-15 Yangfan He , Changgyu Boo , Jaehong Yoon

ANOVA decomposition of function with random input variables provides ANOVA functionals (AFs), which contain information about the contributions of the input variables on the output variable(s). By embedding AFs into an appropriate…

统计理论 · 数学 2023-11-29 Matieyendou Lamboni

Independent Vector Analysis (IVA) is an effective approach for Blind Source Separation (BSS) of convolutive mixtures of audio signals. As a practical realization of an IVA-based BSS algorithm, the so-called AuxIVA update rules based on the…

音频与语音处理 · 电气工程与系统科学 2020-09-22 Andreas Brendel , Walter Kellermann

We present a technique to adaptively bin sparse X-ray data using weighted Voronoi tesselations (WVTs). WVT binning is a generalisation of Cappellari & Copin's (2001) Voronoi binning algorithm, developed for integral field spectroscopy. WVT…

天体物理学 · 物理学 2009-11-11 Steven Diehl , Thomas S. Statler

Background: Voxel-based analysis (VBA) is an analytic approach to evaluate correlations between local dose and the development of different toxicities. DVHs are used for toxicity prediction as well. Compared with DVH, no contours are…

The Characterisation data model is a standard of the International Virtual Observatory Alliance (IVOA) that describes observational datasets in the multi-dimensional parameter space. Defining three properties: coverage, resolution, and…

天体物理仪器与方法 · 物理学 2011-12-23 Francois Bonnarel , Mireille Louys , Igor Chilingarian

Multivariate analysis-of-variance (MANOVA) is a well established tool to examine multivariate endpoints. While classical approaches depend on restrictive assumptions like normality and homogeneity, there is a recent trend to more general…

统计理论 · 数学 2022-11-29 Marléne Baumeister , Marc Ditzhaus , Markus Pauly

The analysis of astronomical interferometric data is often performed on the images obtained after deconvolution of the interferometer's point spread function (PSF). This strategy can be understood (especially for cases of sparse arrays) as…

天体物理仪器与方法 · 物理学 2015-06-18 I. Marti-Vidal , W. H. T. Vlemmings , S. Muller , S. Casey

Statistically simulated time series of wave parameters are required for many coastal and offshore engineering applications, often at the resolution of approximately one hour. Various studies have relied on autoregressive moving-average…

应用统计 · 统计学 2018-10-31 Wiebke S. Jäger , Thomas Nagler , Claudia Czado , Robert T. McCall

In this paper, we propose a new method of Bayesian measurement for spectral deconvolution, which regresses spectral data into the sum of unimodal basis function such as Gaussian or Lorentzian functions. Bayesian measurement is a framework…

信号处理 · 电气工程与系统科学 2019-05-01 Kenji Nagata , Yoh-ichi Mototake , Rei Muraoka , Takehiko Sasaki , Masato Okada

Due to the mechanism of recording, the presence of multiple transactions at each recording time becomes a common feature for high-frequency data in financial market. Using random matrix theory, this paper considers the estimation of…

统计理论 · 数学 2019-09-06 Moming Wang , Ningning Xia , You Zhou
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