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Blind methods often separate or identify signals or signal subspaces up to an unknown scaling factor. Sometimes it is necessary to cope with the scaling ambiguity, which can be done through reconstructing signals as they are received by…

声音 · 计算机科学 2017-08-02 Zbyněk Koldovský , Francesco Nesta

We consider the quickest change detection problem where both the parameters of pre- and post- change distributions are unknown, which prevents the use of classical simple hypothesis testing. Without additional assumptions, optimal solutions…

机器学习 · 计算机科学 2021-06-10 Firas Jarboui , Viannet Perchet

In many advanced video based applications background modeling is a pre-processing step to eliminate redundant data, for instance in tracking or video surveillance applications. Over the past years background subtraction is usually based on…

计算机视觉与模式识别 · 计算机科学 2018-07-18 Maryam Sultana , Arif Mahmood , Sajid Javed , Soon Ki Jung

We propose a Bayesian inference framework to estimate uncertainties in inverse scattering problems. Given the observed data, the forward model and their uncertainties, we find the posterior distribution over a finite parameter field…

数值分析 · 数学 2020-11-17 Ana Carpio , Sergei Iakunin , Georg Stadler

We discuss a new method for setting limits on small signals in the presence of background noise. The method is based on a combination of a two dimensional confidence region and the large sample approximation to the likelihood ratio test…

高能物理 - 唯象学 · 物理学 2009-10-31 Wolfgang A. Rolke , Angel M. Lopez

In this paper, we study the problem of parameter estimation in a sensor network, where the measurements and updates of some sensors might be arbitrarily manipulated by adversaries. Despite the presence of such misbehaviors, normally…

系统与控制 · 电气工程与系统科学 2023-06-06 Jiaqi Yan , Kuo Li , Hideaki Ishii

Environment perception is the task for intelligent vehicles on which all subsequent steps rely. A key part of perception is to safely detect other road users such as vehicles, pedestrians, and cyclists. With modern deep learning techniques…

计算机视觉与模式识别 · 计算机科学 2020-07-13 Florian Kraus , Klaus Dietmayer

In randomly deployed networks, such as sensor networks, an important problem for each node is to discover its \textit{neighbor} nodes so that the connectivity amongst nodes can be established. In this paper, we consider this problem by…

网络与互联网体系结构 · 计算机科学 2013-02-21 Jeongho Jeon , Anthony Ephremides

Detecting and measuring confounding effects from data is a key challenge in causal inference. Existing methods frequently assume causal sufficiency, disregarding the presence of unobserved confounding variables. Causal sufficiency is both…

人工智能 · 计算机科学 2024-09-27 Abbavaram Gowtham Reddy , Vineeth N Balasubramanian

Response calibration is the process of inferring how much the measured data depend on the signal one is interested in. It is essential for any quantitative signal estimation on the basis of the data. Here, we investigate self-calibration…

天体物理仪器与方法 · 物理学 2015-06-18 Torsten A. Enßlin , Henrik Junklewitz , Lars Winderling , Maksim Greiner , Marco Selig

Applications of machine learning tools to problems of physical interest are often criticized for producing sensitivity at the expense of transparency. To address this concern, we explore a data planing procedure for identifying combinations…

高能物理 - 唯象学 · 物理学 2018-03-29 Spencer Chang , Timothy Cohen , Bryan Ostdiek

Observational studies are the primary source of data for causal inference, but it is challenging when existing unmeasured confounding. Missing data problems are also common in observational studies. How to obtain the causal effects from the…

统计方法学 · 统计学 2023-05-15 Renzhong Zheng

Anomaly detection with convolutional autoencoders is a popular method to search for new physics in a model-agnostic manner. These techniques are powerful, but they are still a "black box," since we do not know what high-level physical…

高能物理 - 唯象学 · 物理学 2022-09-13 Layne Bradshaw , Spencer Chang , Bryan Ostdiek

The problem of parameter estimation from a standard vector linear regression equation in the absence of sufficient excitation in the regressor is addressed. The first step to solve the problem consists in transforming this equation into a…

统计方法学 · 统计学 2022-03-14 Alexey Bobtsov , Bowen Yi , Romeo Ortega , Alessandro Astolfi

The more information a measurement provides about a quantum system's position statistics, the less information a subsequent measurement can provide about the system's momentum statistics. This information trade-off is embodied in the…

量子物理 · 物理学 2016-05-16 Gregory A. Howland , James Schneeloch , Daniel J. Lum , John C. Howell

We consider problems in which a system receives external \emph{perturbations} from time to time. For instance, the system can be a train network in which particular lines are repeatedly disrupted without warning, having an effect on…

机器学习 · 计算机科学 2019-08-21 Nicolo Colombo , Ricardo Silva , Soong M Kang , Arthur Gretton

We propose an empirically stable and asymptotically efficient covariate-balancing approach to the problem of estimating survival causal effects in data with conditionally-independent censoring. This addresses a challenge often encountered…

This work estimates the position and the transmit power of multiple co-channel wireless transmitters under model uncertainties. The model uncertainties include the number of the targets and the parameters of the path-loss model which enable…

信息论 · 计算机科学 2019-03-11 Ehsan Zandi , Rudolf Mathar

Uncertainty quantification is essential when dealing with ill-conditioned inverse problems due to the inherent nonuniqueness of the solution. Bayesian approaches allow us to determine how likely an estimation of the unknown parameters is…

机器学习 · 统计学 2020-01-16 Ali Siahkoohi , Gabrio Rizzuti , Felix J. Herrmann

We propose a new optimization framework for aleatoric uncertainty estimation in regression problems. Existing methods can quantify the error in the target estimation, but they tend to underestimate it. To obtain the predictive uncertainty…

计算机视觉与模式识别 · 计算机科学 2021-03-12 Takumi Kawashima , Qing Yu , Akari Asai , Daiki Ikami , Kiyoharu Aizawa