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Powellsnakes is a Bayesian algorithm for detecting compact objects embedded in a diffuse background, and was selected and successfully employed by the Planck consortium in the production of its first public deliverable: the Early Release…

宇宙学与河外天体物理 · 物理学 2015-06-03 Pedro Carvalho , Graça Rocha , M. P. Hobson , A. Lasenby

A Bayesian approach is presented for detecting and characterising the signal from discrete objects embedded in a diffuse background. The approach centres around the evaluation of the posterior distribution for the parameters of the discrete…

天体物理学 · 物理学 2009-11-07 M. P. Hobson , C. McLachlan

This paper presents a new accelerated proximal Markov chain Monte Carlo methodology to perform Bayesian inference in imaging inverse problems with an underlying convex geometry. The proposed strategy takes the form of a stochastic relaxed…

Bayesian methods are appealing in their flexibility in modeling complex data and ability in capturing uncertainty in parameters. However, when Bayes' rule does not result in tractable closed-form, most approximate inference algorithms lack…

机器学习 · 计算机科学 2016-05-09 Bo Dai , Niao He , Hanjun Dai , Le Song

Digital co-addition of astronomical images is a common technique for increasing signal-to-noise and image depth. A modification of this simple technique has been applied to the detection of minor bodies in the Solar System: first stationary…

地球与行星天体物理 · 物理学 2015-05-18 Alex H. Parker , JJ. Kavelaars

A probabilistic technique for the joint estimation of background and sources with the aim of detecting faint and extended celestial objects is described. Bayesian probability theory is applied to gain insight into the coexistence of…

天体物理仪器与方法 · 物理学 2015-05-13 F. Guglielmetti , R. Fischer , V. Dose

Searching for small objects in large images is a task that is both challenging for current deep learning systems and important in numerous real-world applications, such as remote sensing and medical imaging. Thorough scanning of very large…

计算机视觉与模式识别 · 计算机科学 2021-04-16 Nathan Drenkow , Philippe Burlina , Neil Fendley , Onyekachi Odoemene , Jared Markowitz

Following the discovery of the brightest high-energy neutrino sources in the sky, the further detection of fainter sources is more challenging. A natural solution is to combine fainter source candidates, and instead of individual…

高能天体物理现象 · 物理学 2025-06-03 I. Bartos , M. Ackermann , M. Kowalski

In policy learning for robotic manipulation, sample efficiency is of paramount importance. Thus, learning and extracting more compact representations from camera observations is a promising avenue. However, current methods often assume full…

Fast moving celestial objects are characterized by velocities across the celestial sphere that significantly differ from the motions of background stars. In observational images, these objects exhibit distinct shapes, contrasting with the…

天体物理仪器与方法 · 物理学 2025-04-11 Peng Jia , Ge Li , Bafeng Cheng , Yushan Li , Rongyu Sun

We address the problem of tracking the 6-DoF pose of an object while it is being manipulated by a human or a robot. We use a dynamic Bayesian network to perform inference and compute a posterior distribution over the current object pose.…

机器人学 · 计算机科学 2015-05-04 Manuel Wüthrich , Peter Pastor , Mrinal Kalakrishnan , Jeannette Bohg , Stefan Schaal

Many modern statistical applications involve inference for complicated stochastic models for which the likelihood function is difficult or even impossible to calculate, and hence conventional likelihood-based inferential echniques cannot be…

统计计算 · 统计学 2013-05-29 Simon R. White , Theodore Kypraios , Simon P. Preston

Object tracking is one of the fundamental problems in visual recognition tasks and has achieved significant improvements in recent years. The achievements often come with the price of enormous hardware consumption and expensive labor effort…

计算机视觉与模式识别 · 计算机科学 2022-05-06 Yan Shen , Zhanghexuan Ji , Chunwei Ma , Mingchen Gao

Video analytics requires operating with large amounts of data. Compressive sensing allows to reduce the number of measurements required to represent the video using the prior knowledge of sparsity of the original signal, but it imposes…

计算机视觉与模式识别 · 计算机科学 2018-07-17 Danil Kuzin , Olga Isupova , Lyudmila Mihaylova

In this paper we propose a new deterministic approximation method, called discretization approximation, for Bayesian computation. Discretization approximation is very simple to understand and to implement, It only requires calculating…

统计计算 · 统计学 2026-01-13 Shifeng Xiong

In this article we consider Bayesian estimation of static parameters for a class of partially observed McKean-Vlasov diffusion processes with discrete-time observations over a fixed time interval. This problem features several obstacles to…

统计计算 · 统计学 2025-04-23 Ajay Jasra , Amin Wu

We devise an algorithm using a Bayesian optimization framework in conjunction with contextual visual data for the efficient localization of objects in still images. Recent research has demonstrated substantial progress in object…

计算机视觉与模式识别 · 计算机科学 2017-09-21 Anthony D. Rhodes , Jordan Witte , Melanie Mitchell , Bruno Jedynak

Bayesian methods provide an elegant framework for estimating parameter posteriors and quantification of uncertainty associated with probabilistic models. However, they often suffer from slow inference times. To address this challenge,…

机器学习 · 计算机科学 2024-05-10 Piyush Tiwary , Kumar Shubham , Vivek V. Kashyap , Prathosh A. P

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

The spectral energy distribution (SED) is a relatively easy way for astronomers to distinguish between different astronomical objects such as galaxies, black holes, and stellar objects. By comparing the observations from a source at…

统计方法学 · 统计学 2015-01-13 Justin J. Yang , Xufei Wang , Pavlos Protopapas , Luke Bornn
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