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We describe a methodology to classify periodic variable stars identified using photometric time-series measurements constructed from the Wide-field Infrared Survey Explorer (WISE) full-mission single-exposure Source Databases. This will…

天体物理仪器与方法 · 物理学 2015-06-18 Frank J. Masci , Douglas I. Hoffman , Carl J. Grillmair , Roc M. Cutri

We investigate the detection of weak complex-valued signals immersed in non-Gaussian, range-varying interference, with emphasis on maritime radar scenarios. The proposed methodology exploits a Complex-valued Variational AutoEncoder (CVAE)…

Deep networks often make confident, yet, incorrect, predictions when tested with outlier data that is far removed from their training distributions. Likelihoods computed by deep generative models (DGMs) are a candidate metric for outlier…

机器学习 · 计算机科学 2022-07-20 Kushal Chauhan , Barath Mohan U , Pradeep Shenoy , Manish Gupta , Devarajan Sridharan

Context. Discovery of new variability classes in large surveys using multivariate statistics techniques such as clustering, relies heavily on the correct understanding of the distribution of known classes as point processes in parameter…

太阳与恒星天体物理 · 物理学 2015-05-13 L. M. Sarro , J. Debosscher , C. Aerts , M. López

Automated plankton recognition models face significant challenges during real-world deployment due to distribution shifts (Out-of-Distribution, OoD) between training and test data. This stems from plankton's complex morphologies, vast…

计算机视觉与模式识别 · 计算机科学 2025-10-21 Yingzi Han , Jiakai He , Chuanlong Xie , Jianping Li

We present DINO Patch Visual Odometry (DINO-VO), an end-to-end monocular visual odometry system with strong scene generalization. Current Visual Odometry (VO) systems often rely on heuristic feature extraction strategies, which can degrade…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Qi Chen , Guanghao Li , Sijia Hu , Xin Gao , Junpeng Ma , Xiangyang Xue , Jian Pu

An important problem in forensic analyses is identifying the provenance of materials at a crime scene, such as biological material on a piece of clothing. This procedure, known as geolocation, is conventionally guided by expert knowledge of…

We explored the AllWISE catalogue of the Wide-field Infrared Survey Explorer mission and identified Young Stellar Object candidates. Reliable 2MASS and WISE photometric data combined with Planck dust opacity values were used to build our…

天体物理仪器与方法 · 物理学 2016-03-09 Gábor Marton , L. Viktor Tóth , Roberta Paladini , Mária Kun , Sarolta Zahorecz , Peregrine McGehee , Csaba Kiss

Photometric variation of a directly imaged planet contains information on both the geography and spectra of the planetary surface. We propose a novel technique that disentangles the spatial and spectral information from the multi-band…

地球与行星天体物理 · 物理学 2020-05-13 Hajime Kawahara

In this paper we tackle the ANOVA problem for directional data (with particular emphasis on geological data) by having recourse to the Le Cam methodology usually reserved for linear multivariate analysis. We construct locally and…

统计理论 · 数学 2012-12-07 Christophe Ley , Yvik Swan , Thomas Verdebout

Typical Bayesian approaches to OOD detection use epistemic uncertainty. Surprisingly from the Bayesian perspective, there are a number of methods that successfully use aleatoric uncertainty to detect OOD points (e.g. Hendryks et al. 2018).…

机器学习 · 统计学 2021-10-29 Xi Wang , Laurence Aitchison

Electron, optical, and scanning probe microscopy methods are generating ever increasing volume of image data containing information on atomic and mesoscale structures and functionalities. This necessitates the development of the machine…

机器学习 · 计算机科学 2023-04-03 Mani Valleti , Yongtao Liu , Sergei Kalinin

Dynamic Light Scattering (DLS), Small Angle X-ray Scattering (SAXS) and Transmission Electron Microscopy (TEM) are physical techniques widely employed to characterize the morphology and the structure of vesicles such as liposomes or human…

Identifying the origin of a sample image in biometric systems can be beneficial for data authentication in case of attacks against the system and for initiating sensor-specific processing pipelines in sensor-heterogeneous environments.…

计算机视觉与模式识别 · 计算机科学 2021-02-09 Babak Maser , Andreas Uhl

Anomaly detection aims to identify data instances that deviate significantly from majority of data, which has been widely used in fraud detection, network security, and industrial quality control. Existing methods struggle with datasets…

机器学习 · 计算机科学 2026-01-29 Yang Cao , Sikun Yang , Xuyun Zhang , Yujiu Yang

The Gaia DR2 sample of short-timescale variable candidates results from the investigation of the first 22 months of Gaia photometry for a subsample of sources at the Gaia faint end. For this exercise, we limited ourselves to the case of…

We exploit the information derived from geographical coordinates to endogenously identify spatial regimes in technologies that are the result of a variety of complex, dynamic interactions among site-specific environmental variables and…

应用统计 · 统计学 2019-08-02 Anna Gloria Billé , Cristina Salvioni , Roberto Benedetti

We investigate the identification of the time-dependent source term in the diffusion equation using boundary measurements. This facilitates tracing back the origins of environmental pollutants. Employing the concept of dynamic complex…

数值分析 · 数学 2023-11-21 Lingyun Qiu , Zhongjing Wang , Hui Yu , Shenwen Yu

Although unsupervised generative modeling of an image dataset using a Variational AutoEncoder (VAE) has been used to detect anomalous images, or anomalous regions in images, recent works have shown that this method often identifies images…

计算机视觉与模式识别 · 计算机科学 2020-08-13 David Dehaene , Pierre Eline

Undirected graphical models are applied in genomics, protein structure prediction, and neuroscience to identify sparse interactions that underlie discrete data. Although Bayesian methods for inference would be favorable in these contexts,…

机器学习 · 统计学 2017-06-15 John Ingraham , Debora Marks