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Based on realistic simulations, we propose an hybrid method to reconstruct the lensing potential power spectrum, directly on PLANCK-like CMB frequency maps. It implies using a large galactic mask and dealing with a strong inhomogeneous…

宇宙学与河外天体物理 · 物理学 2015-03-20 S. Plaszczynski , A. Lavabre , L. Perotto , J. -L. Starck

Time series classification (TSC) is fundamental in numerous domains, including finance, healthcare, and environmental monitoring. However, traditional TSC methods often struggle with the inherent complexity and variability of time series…

机器学习 · 计算机科学 2026-02-06 Marcell T. Kurbucz , Balázs Hajós , Balázs P. Halmos , Vince Á. Molnár , Antal Jakovác

A majority of blazars exhibit variable emission across the entire electromagnetic spectrum, observed over various time scales. In particular, discernible periodic patterns are detected in the $\gamma$-ray light curves of a few blazars, such…

高能天体物理现象 · 物理学 2025-06-18 Alba Rico , A. Domínguez , P. Peñil , M. Ajello , S. Buson , S. Adhikari , M. Movahedifar

We show that using either the method of Page & Carrera or the well-known $1/V_a$ method to construct the binned luminosity function (LF) of a flux limited sample of Active Galactic Nuclei (AGN) can produce an artificial flattening (or…

天体物理学 · 物理学 2009-11-13 Mihai Cara , Matthew L. Lister

A new and automated method is presented for the analysis of high-resolution absorption spectra. Three established numerical methods are unified into one "artificial intelligence" process: a genetic algorithm (GVPFIT); non-linear…

天体物理仪器与方法 · 物理学 2017-02-01 Matthew B. Bainbridge , John K. Webb

We present an unbinned likelihood analysis formalism employing photon weights -- the probabilities that events are associated with a particular source. This approach is applicable to any photon-resolving instrument, and thus well suited to…

高能天体物理现象 · 物理学 2020-01-08 Matthew Kerr

The measurement of a reaction cross section from a pulse height spectrum is a ubiquitous problem in experimental nuclear physics. In $\gamma$-ray spectroscopy, this is accomplished frequently by measuring the intensity of full-energy…

数据分析、统计与概率 · 物理学 2017-10-05 J. R. Dermigny , C. Iliadis , M. Q. Buckner , K. J. Kelly

Transform Invariant Low-rank Textures (TILT) is a novel and powerful tool that can effectively rectify a rich class of low-rank textures in 3D scenes from 2D images despite significant deformation and corruption. The existing algorithm for…

计算机视觉与模式识别 · 计算机科学 2013-01-30 Xiang Ren , Zhouchen Lin

We present microlux, which is a Jax-based code that can compute the binary microlensing light curve and its derivatives both efficiently and accurately. The key feature of microlux is the implementation of a modified version of the adaptive…

天体物理仪器与方法 · 物理学 2025-02-18 Haibin Ren , Wei Zhu

This work presents a methodological approach to generate realistic $\gamma$-ray light curves of pulsars, resembling reasonably well the observational ones observed by the Fermi-Large Area Telescope instrument, fitting at the same time their…

高能天体物理现象 · 物理学 2024-04-03 Daniel Íñiguez-Pascual , Diego F. Torres , Daniele Viganò

The light curves produced by all-sky monitors, such as the Rossi X-ray Timing Explorer All-Sky Monitor and the Swift Burst Alert Telescope (BAT), generally have non-uniform error bars. In searching for periodic modulation in this type of…

天体物理学 · 物理学 2009-06-23 Robin Corbet , Richard Dubois

Decade-long monitoring of blazars at optical and infrared (OIR) wavelengths with the Small and Moderate Aperture Research Telescope System (SMARTS) in Chile and in $\gamma$-rays with the Fermi Large Area Telescope (LAT) has enabled the…

高能天体物理现象 · 物理学 2021-07-14 M. Polkas , M. Petropoulou , G. Vasilopoulos , A. Mastichiadis , M. C. Urry , P. Coppi , C. Bailyn

It is well-known that the high computational complexity and the insufficient samples in large-scale array signal processing restrict the real-world applications of the conventional full-dimensional adaptive beamforming (sample matrix…

信息论 · 计算机科学 2014-05-20 Hu Xie , Da-Zheng Feng , Ming-Dong Yuan

Bundle Adjustment (BA) has been proven to improve the accuracy of the LiDAR mapping. However, the BA method has not yet been properly employed in a dead-reckoning navigation system. In this paper, we present a frame-to-frame (F2F) BA for…

机器人学 · 计算机科学 2024-02-13 Hailiang Tang , Tisheng Zhang , Liqiang Wang , Man Yuan , Xiaoji Niu

Conformal inference is a statistical method used to construct prediction sets for point predictors, providing reliable uncertainty quantification with probability guarantees. This method utilizes historical labeled data to estimate the…

机器学习 · 计算机科学 2024-11-05 Xiaoyi Su , Zhixin Zhou , Rui Luo

LiDAR (Light Detection And Ranging) is an essential and widely adopted sensor for autonomous vehicles, particularly for those vehicles operating at higher levels (L4-L5) of autonomy. Recent work has demonstrated the promise of deep-learning…

计算机视觉与模式识别 · 计算机科学 2019-04-22 Bernie Wang , Virginia Wu , Bichen Wu , Kurt Keutzer

We propose a generalization of our previous KDE (kernel density estimation) method for estimating luminosity functions (LFs). This new upgrade further extend the application scope of our KDE method, making it a very flexible approach which…

天体物理仪器与方法 · 物理学 2022-05-18 Zunli Yuan , Xibin Zhang , Jiancheng Wang , Xiangming Cheng , Wenjie Wang

The accurate recovery of constituent-level optical properties from integrating sphere measurements is a central analytical challenge in pharmaceutical analysis, food science, and biomedical diagnostics. Neural network autoencoders can…

光学 · 物理学 2026-05-13 Martin Hohmann

Continual test-time domain adaptation (CTTA) aims to adjust models so that they can perform well over time across non-stationary environments. While previous methods have made considerable efforts to optimize the adaptation process, a…

计算机视觉与模式识别 · 计算机科学 2026-02-09 Yanshuo Wang , Jinguang Tong , Jun Lan , Weiqiang Wang , Huijia Zhu , Haoxing Chen , Xuesong Li , Jie Hong

Blazars are active galactic nuclei with relativistic jets pointed almost directly at Earth. Blazars are characterized by strong, apparently stochastic flux variability at virtually all observed wavelengths and timescales, from minutes to…

高能天体物理现象 · 物理学 2023-02-16 Aryeh Brill