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In this work model-based methods are employed along with machine learning techniques to classify sediments in oceanic environments based on the geoacoustic properties of a two-layer seabed. Two different scenarios are investigated. First, a…

信号处理 · 电气工程与系统科学 2023-07-19 Christina Frederick , Soledad Villar , Zoi-Heleni Michalopoulou

This work addresses the problem of range-Doppler multiple target detection in a radar system in the presence of slow-time correlated and heavy-tailed distributed clutter. Conventional target detection algorithms assume Gaussian-distributed…

信号处理 · 电气工程与系统科学 2023-04-11 Stefan Feintuch , Haim H. Permuter , Igal Bilik , Joseph Tabrikian

In this work a robust clustering algorithm for stationary time series is proposed. The algorithm is based on the use of estimated spectral densities, which are considered as functional data, as the basic characteristic of stationary time…

About 1/3 of X-ray-luminous clusters show smooth, Mpc-scale radio emission, known as giant radio haloes. One promising model for radio haloes is Fermi-II acceleration of seed relativistic electrons by compressible turbulence. The origin of…

高能天体物理现象 · 物理学 2017-01-11 Anders Pinzke , S. Peng Oh , Christoph Pfrommer

Automotive radar sensors output a lot of unwanted clutter or ghost detections, whose position and velocity do not correspond to any real object in the sensor's field of view. This poses a substantial challenge for environment perception…

计算机视觉与模式识别 · 计算机科学 2021-08-30 Johannes Kopp , Dominik Kellner , Aldi Piroli , Klaus Dietmayer

Temperature time traces are obtained in turbulent thermal convection at high Rayleigh numbers. Measurements are made in the midplane of the apparatus, near the sidewall but outside the boundary layer. A telegraph approximation for…

混沌动力学 · 物理学 2007-05-23 A. Bershadskii , J. J. Niemela , A. Praskovsky , K. R. Sreenivasan

Detecting and quantifying marine pollution and macro-plastics is an increasingly pressing ecological issue that directly impacts ecology and human health. Efforts to quantify marine pollution are often conducted with sparse and expensive…

计算机视觉与模式识别 · 计算机科学 2023-07-06 Marc Rußwurm , Sushen Jilla Venkatesa , Devis Tuia

Cluster analysis is the distribution of objects into different groups or more precisely the partitioning of a data set into subsets (clusters) so that the data in subsets share some common trait according to some distance measure. Unlike…

宇宙学与河外天体物理 · 物理学 2013-09-17 Tuli De , Didier Fraix-Burnet , Asis Kumar Chattopadhyay

Modulation recognition is an important task in radio signal processing. Most of the current researches focus on supervised learning. However, in many real scenarios, it is difficult and cost to obtain the labels of signals. In this letter,…

信号处理 · 电气工程与系统科学 2021-07-27 Qi Xuan , Xiaohui Li , Zhuangzhi Chen , Dongwei Xu , Shilian Zheng , Xiaoniu Yang

Point cloud filtering is a fundamental problem in geometry modeling and processing. Despite of significant advancement in recent years, the existing methods still suffer from two issues: 1) they are either designed without preserving sharp…

图形学 · 计算机科学 2020-09-29 Dongbo Zhang , Xuequan Lu , Hong Qin , Ying He

Involved in mitotic condensation, interaction of transcriptional regulatory elements or isolation of structural domains, understanding loop formation is becoming a paradigm in the deciphering of chromatin architecture and its functional…

定量方法 · 定量生物学 2024-09-17 Michaël Liefsoens , Timothy Földes , Maria Barbi

Single-frame infrared small target (SIRST) detection aims at separating small targets from clutter backgrounds on infrared images. Recently, deep learning based methods have achieved promising performance on SIRST detection, but at the cost…

计算机视觉与模式识别 · 计算机科学 2023-04-11 Boyang Li , Yingqian Wang , Longguang Wang , Fei Zhang , Ting Liu , Zaiping Lin , Wei An , Yulan Guo

In this paper, we establish a new scheme for identification and classification of high intensity events generated by the propagation of light through a photorefractive SBN crystal. Among these events, which are the inevitable consequence of…

斑图形成与孤子 · 物理学 2020-04-22 Marija Ivanovic , Ana Mancic , Carla Herman-Avigliano , Ljupco Hadzievski , Aleksandra Maluckov

Due to the massive size of modern network data, local algorithms that run in sublinear time for analyzing the cluster structure of the graph are receiving growing interest. Two typical examples are local graph clustering algorithms that…

数据结构与算法 · 计算机科学 2019-04-23 Pan Peng

In this paper, we apply the scattering transform (ST), a nonlinear map based off of a convolutional neural network (CNN), to classification of underwater objects using sonar signals. The ST formalizes the observation that the filters…

计算机视觉与模式识别 · 计算机科学 2017-09-05 Naoki Saito , David S. Weber

Cluster structure detection is a fundamental task for the analysis of graphs, in order to understand and to visualize their functional characteristics. Among the different cluster structure detection methods, spectral clustering is…

Using 3D point clouds in odometry estimation in robotics often requires finding a set of correspondences between points in subsequent scans. While there are established methods for point clouds of sufficient quality, state-of-the-art still…

机器人学 · 计算机科学 2025-06-24 Jan Michalczyk , Stephan Weiss , Jan Steinbrener

Spectral clustering is one of the most prominent clustering approaches. The distance-based similarity is the most widely used method for spectral clustering. However, people have already noticed that this is not suitable for multi-scale…

机器学习 · 计算机科学 2020-09-11 Hengrui Wang , Yubo Zhang , Mingzhi Chen , Tong Yang

Spectral clustering has been widely used for community detection in network sciences. While its empirical successes are well-documented, a clear theoretical understanding, particularly for sparse networks where degrees are much smaller than…

统计理论 · 数学 2024-05-13 Anderson Ye Zhang

Clustering algorithms are often used to find subpopulations in exploratory data analysis workflows. Not only the clusters themselves, but also their shape can represent meaningful subpopulations. In this paper, we present FLASC, an…

机器学习 · 计算机科学 2025-04-23 D. M. Bot , J. Peeters , J. Liesenborgs , J. Aerts