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Many fundamental problems in computational geometry admit no algorithm running in $o(n \log n)$ time for $n$ planar input points, via classical reductions from sorting. Prominent examples include the computation of convex hulls, quadtrees,…

计算几何 · 计算机科学 2026-05-18 Ivor van der Hoog , Eva Rotenberg , Jack Spalding-Jamieson , Lasse Wulf

Proper Orthogonal Decomposition (POD) is a widely used technique for the construction of low-dimensional approximation spaces from high-dimensional input data. For large-scale applications and an increasing amount of input data vectors,…

数值分析 · 数学 2021-06-09 Christian Himpe , Tobias Leibner , Stephan Rave

Hyperdimensional computing (HDC) has emerged as a new light-weight learning algorithm with smaller computation and energy requirements compared to conventional techniques. In HDC, data points are represented by high-dimensional vectors…

机器学习 · 计算机科学 2021-03-12 Toygun Basaklar , Yigit Tuncel , Shruti Yadav Narayana , Suat Gumussoy , Umit Y. Ogras

Both humans and deep learning models can recognize objects from 3D shapes depicted with sparse visual information, such as a set of points randomly sampled from the surfaces of 3D objects (termed a point cloud). Although deep learning…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Shuhao Fu , Philip J. Kellman , Hongjing Lu

Models with dominant advection always posed a difficult challenge for projection-based reduced order modelling. Many methodologies that have recently been proposed are based on the pre-processing of the full-order solutions to accelerate…

3D integration offers key advantages in improving system performance and efficiency for the End-of-Scaling era. It enables the incorporation of heterogeneous system components and disparate technologies, eliminates off-chip communication…

新兴技术 · 计算机科学 2024-09-18 Eren Kurshan , Paul Franzon

In this paper, two accelerated divide-and-conquer algorithms are proposed for the symmetric tridiagonal eigenvalue problem, which cost $O(N^2r)$ {flops} in the worst case, where $N$ is the dimension of the matrix and $r$ is a modest number…

数值分析 · 计算机科学 2015-10-16 Shengguo Li , Xiangke Liao , Jie Liu , Hao Jiang

Advancements in 3D vision have increased the impact of blood vessel modeling on medical applications. However, accurately representing the complex geometry and topology of blood vessels remains a challenge due to their intricate branching…

计算机视觉与模式识别 · 计算机科学 2025-07-22 Siqi Chen , Guoqing Zhang , Jiahao Lai , Bingzhi Shen , Sihong Zhang , Caixia Dong , Xuejin Chen , Yang Li

This paper proposes a Kolmogorov high order deep neural network (K-HOrderDNN) for solving high-dimensional partial differential equations (PDEs), which improves the high order deep neural networks (HOrderDNNs). HOrderDNNs have been…

数值分析 · 数学 2025-05-09 Yaqin Zhang , Ke Li , Zhipeng Chang , Xuejiao Liu , Yunqing Huang , Xueshuang Xiang

Matrix-vector multiplication is one of the most fundamental computing primitives. Given a matrix $A\in\mathbb{F}^{N\times N}$ and a vector $b$, it is known that in the worst case $\Theta(N^2)$ operations over $\mathbb{F}$ are needed to…

数据结构与算法 · 计算机科学 2017-11-21 Christopher De Sa , Albert Gu , Rohan Puttagunta , Christopher Ré , Atri Rudra

Huge amount of applications in various fields, such as gene expression analysis or computer vision, undergo data sets with high-dimensional low-sample-size (HDLSS), which has putted forward great challenges for standard statistical and…

机器学习 · 计算机科学 2022-06-07 Liran Shen , Meng Joo Er , Qingbo Yin

Hypergraph matching has recently become a popular approach for solving correspondence problems in computer vision as it allows to integrate higher-order geometric information. Hypergraph matching can be formulated as a third-order…

计算机视觉与模式识别 · 计算机科学 2016-11-17 Quynh Nguyen , Francesco Tudisco , Antoine Gautier , Matthias Hein

Vector Quantization (VQ) is an appealing model compression method to obtain a tiny model with less accuracy loss. While methods to obtain better codebooks and codes under fixed clustering dimensionality have been extensively studied,…

计算机视觉与模式识别 · 计算机科学 2022-11-22 Zezhou Zhu , Yucong Zhou , Zhao Zhong

Autoregressive models have proven to be very powerful in NLP text generation tasks and lately have gained popularity for image generation as well. However, they have seen limited use for the synthesis of 3D shapes so far. This is mainly due…

计算机视觉与模式识别 · 计算机科学 2021-11-25 Moritz Ibing , Gregor Kobsik , Leif Kobbelt

Higher-dimensional orthogonal packing problems have a wide range of practical applications, including packing, cutting, and scheduling. Previous efforts for exact algorithms have been unable to avoid structural problems that appear for…

数据结构与算法 · 计算机科学 2007-05-23 Sandor P. Fekete , Joerg Schepers

We discuss an implementation of our 3D radiative transfer (3DRT) framework with the OpenCL paradigm for general GPU computing. We implement the kernel for solving the 3DRT problem in Cartesian coordinates with periodic boundary conditions…

天体物理仪器与方法 · 物理学 2011-08-01 Peter H. Hauschildt , E. Baron

Outlier recognition is a fundamental problem in data analysis and has attracted a great deal of attention in the past decades. However, most existing methods still suffer from several issues such as high time and space complexities or…

计算几何 · 计算机科学 2019-04-09 Hu Ding , Mingquan Ye

Kernel matrices are crucial in many learning tasks such as support vector machines or kernel ridge regression. The kernel matrix is typically dense and large-scale. Depending on the dimension of the feature space even the computation of all…

机器学习 · 计算机科学 2023-12-04 Franziska Nestler , Martin Stoll , Theresa Wagner

We construct the effective Hamiltonian for hadronic parity violation in strangeness-nonchanging ($\Delta S=0$) processes in next-to-leading order (NLO) in QCD, for all isosectors, and at a renormalization scale of 2 GeV, thus extending our…

高能物理 - 唯象学 · 物理学 2024-01-09 Girish Muralidhara , Susan Gardner

Optimal recursive decomposition (or DR-planning) is crucial for analyzing, designing, solving or finding realizations of geometric constraint sytems. While the optimal DR-planning problem is NP-hard even for general 2D bar-joint constraint…

计算几何 · 计算机科学 2015-07-07 Troy Baker , Meera Sitharam , Menghan Wang , Joel Willoughby
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