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We use exponential start time clustering to design faster and more work-efficient parallel graph algorithms involving distances. Previous algorithms usually rely on graph decomposition routines with strict restrictions on the diameters of…

数据结构与算法 · 计算机科学 2015-06-25 Gary L. Miller , Richard Peng , Adrian Vladu , Shen Chen Xu

The $\mathcal{G}^0$ distribution is widely used for monopolarized SAR image modeling because it can characterize regions with different degree of texture accurately. It is indexed by three parameters: the number of looks (which can be…

统计方法学 · 统计学 2019-04-25 Alejandro C. Frery , Juliana Gambini

Decomposing a graph into a hierarchical structure via $k$-core analysis is a standard operation in any modern graph-mining toolkit. $k$-core decomposition is a simple and efficient method that allows to analyze a graph beyond its mere…

数据结构与算法 · 计算机科学 2020-01-16 Nikolaj Tatti

Score-based algorithms that learn the structure of Bayesian networks can be used for both exact and approximate solutions. While approximate learning scales better with the number of variables, it can be computationally expensive in the…

机器学习 · 计算机科学 2022-02-22 Zhigao Guo , Anthony C. Constantinou

A robust fake satellite image detection method, called Geo-DefakeHop, is proposed in this work. Geo-DefakeHop is developed based on the parallel subspace learning (PSL) methodology. PSL maps the input image space into several feature…

计算机视觉与模式识别 · 计算机科学 2021-10-20 Hong-Shuo Chen , Kaitai Zhang , Shuowen Hu , Suya You , C. -C. Jay Kuo

Poisson Surface Reconstruction is a widely-used algorithm for reconstructing a surface from an oriented point cloud. To facilitate applications where only partial surface information is available, or scanning is performed sequentially, a…

图形学 · 计算机科学 2025-06-06 Sidhanth Holalkere , David S. Bindel , Silvia Sellán , Alexander Terenin

We present a method for modelling the cluster-galaxy correlation function in redshift-space, down to ~ Mpc scales. The method builds upon the so-called Galaxy Infall Kinematics (GIK) model, a parametric model for the pairwise velocities of…

宇宙学与河外天体物理 · 物理学 2024-06-04 Andrew Robertson , Eric Huff , Katarina Markovic , Baojiu Li

We present a space and time efficient practical parallel algorithm for approximating the diameter of massive weighted undirected graphs on distributed platforms supporting a MapReduce-like abstraction. The core of the algorithm is a…

分布式、并行与集群计算 · 计算机科学 2015-11-10 Matteo Ceccarello , Andrea Pietracaprina , Geppino Pucci , Eli Upfal

We use the $p$-Laplacian with large $p$-values in order to approximate geodesic distances to features on surfaces. This differs from Fayolle and Belyaev's (2018) [1] computational results using the $p$-Laplacian for the distance-to-surface…

图形学 · 计算机科学 2025-05-22 Hannah Potgieter , Razvan C. Fetecau , Steven J. Ruuth

Isocontouring is one of the most widely used visualization techniques. However, many popular contouring algorithms were created prior to the advent of ubiquitous parallel approaches, such as multi-core, shared memory computing systems. With…

图形学 · 计算机科学 2024-01-29 Will Schroeder , Spiros Tsalikis , Michael Halle , Sarah Frisken

Current theories hold that brain function is highly related to long-range physical connections through axonal bundles, namely extrinsic connectiv-ity. However, obtaining a groupwise cortical parcellation based on extrinsic connectivity…

应用统计 · 统计学 2017-01-06 Guillermo Gallardo , William Wells , Rachid Deriche , Demian Wassermann

We present a real-time method for robust estimation of multiple instances of geometric models from noisy data. Geometric models such as vanishing points, planar homographies or fundamental matrices are essential for 3D scene analysis.…

计算机视觉与模式识别 · 计算机科学 2024-01-29 Florian Kluger , Bodo Rosenhahn

Traditional k-means clustering underperforms on non-convex shapes and requires the number of clusters k to be specified in advance. We propose a simple geometric enhancement: after standard k-means, each cluster center is assigned a radius…

机器学习 · 计算机科学 2025-04-30 Stefan Kober

In this paper, we present a novel region-based segmentation method for cortical spreading depressions in 2-photon microscopy images. Fluorescent microscopy has become an important tool in neuroscience, but segmentation approaches are…

图像与视频处理 · 电气工程与系统科学 2019-02-04 M. Filip Sluzewski , Petr Tvrdik , Scott T. Acton

3D Gaussian Splatting (3DGS) has emerged as a transformative method in the field of real-time novel synthesis. Based on 3DGS, recent advancements cope with large-scale scenes via spatial-based partition strategy to reduce video memory and…

计算机视觉与模式识别 · 计算机科学 2025-01-06 Tengfei Wang , Xin Wang , Yongmao Hou , Yiwei Xu , Wendi Zhang , Zongqian Zhan

We present a novel Simultaneous Localization and Mapping (SLAM) method that employs Gaussian Process (GP) based landmark (object) representations. Instead of conventional grid maps or point cloud registration, we model the environment on a…

机器人学 · 计算机科学 2025-08-25 Ali Emre Balcı , Erhan Ege Keyvan , Emre Özkan

Accurate High-Definition (HD) map construction is critical for autonomous driving, yet existing methods face a fundamental trade-off: vectorization-based approaches preserve topology but struggle with geometric fidelity, while…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Zhenxuan Zeng , Lingxuan Wang , Sheng Yang , Yanan He , Mingxia Chen , Wei Suo , Peng Wang

We present a new method for mapping applications' MPI tasks to cores of a parallel computer such that applications' communication time is reduced. We address the case of sparse node allocation, where the nodes assigned to a job are not…

分布式、并行与集群计算 · 计算机科学 2018-04-27 Mehmet Deveci , Karen D. Devine , Kevin Pedretti , Mark A. Taylor , Sivasankaran Rajamanickam , Umit V. Catalyurek

Quantum-based molecular dynamics (QMD) is a highly accurate and transferable method for material science simulations. However, the time scales and system sizes accessible to QMD are typically limited to picoseconds and a few hundred atoms.…

Spatial transcriptomic (ST) clustering employs spatial and transcription information to group spots spatially coherent and transcriptionally similar together into the same spatial domain. Graph convolution network (GCN) and graph attention…

定量方法 · 定量生物学 2023-10-24 Chen Zhang , Junhui Gao , Lingxin Kong , Guangshuo cao , Xiangyu Guo , Wei Liu