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We design and implement parallel prefix sum (scan) algorithms using Ascend AI accelerators. Ascend accelerators feature specialized computing units: the cube units for efficient matrix multiplication and the vector units for optimized…

分布式、并行与集群计算 · 计算机科学 2026-01-05 Bartłomiej Wróblewski , Gioele Gottardo , Anastasios Zouzias

Parallelization techniques have become ubiquitous for accelerating inference and training of deep neural networks. Despite this, several operations are still performed in a sequential manner. For instance, the forward and backward passes…

机器学习 · 计算机科学 2023-10-30 Federico Danieli , Miguel Sarabia , Xavier Suau , Pau Rodríguez , Luca Zappella

A novel representation of images for image retrieval is introduced in this paper, by using a new type of feature with remarkable discriminative power. Despite the multi-scale nature of objects, most existing models perform feature…

计算机视觉与模式识别 · 计算机科学 2014-06-06 Shasha Bu , Yu-Jin Zhang

This paper presents new parallel algorithms for generating Euclidean minimum spanning trees and spatial clustering hierarchies (known as HDBSCAN$^*$). Our approach is based on generating a well-separated pair decomposition followed by using…

数据结构与算法 · 计算机科学 2021-04-05 Yiqiu Wang , Shangdi Yu , Yan Gu , Julian Shun

Reliable quantitative analysis in scanning (transmission) electron microscopy (S(T)EM) is often hindered by image drift during long-duration spectral mapping for elemental analysis or for various material functions. We here present…

仪器与探测器 · 物理学 2026-04-22 Zac Thollar , Kanto Maeda , Tetsuya Kubota , Taka-aki Yano , Qiwen Tan , Takumi Sannomiya

In applications involving matching of image sets, the information from multiple images must be effectively exploited to represent each set. State-of-the-art methods use probabilistic distribution or subspace to model a set and use specific…

计算机视觉与模式识别 · 计算机科学 2016-10-04 Jie Feng , Svebor Karaman , I-Hong Jhuo , Shih-Fu Chang

Dependency parsing is an important NLP task. A popular approach for dependency parsing is structured perceptron. Still, graph-based dependency parsing has the time complexity of $O(n^3)$, and it suffers from slow training. To deal with this…

计算与语言 · 计算机科学 2017-03-03 Xu Sun , Shuming Ma

Imaging devices exploit the Nyquist-Shannon sampling theorem to avoid both aliasing and redundant oversampling by design. Conversely, in medical image resampling, images are considered as continuous functions, are warped by a spatial…

图像与视频处理 · 电气工程与系统科学 2021-01-19 M. Jorge Cardoso , Marc Modat , Tom Vercauteren , Sebastien Ourselin

In this paper, we present a concurrent implementation of a powerful topological thinning operator. This operator is able to act directly over grayscale images without modifying their topology. We introduce an adapted parallelization…

分布式、并行与集群计算 · 计算机科学 2016-03-31 Ramzi Mahmoudi , Mohamed Akil , Petr Matas

Serial crystallography experiments routinely produce thousands of diffraction patterns from crystals in random orientations. To turn this stream of images into a usable dataset, each pattern must be indexed before integration and merging…

计算物理 · 物理学 2025-12-01 Marc M Nasser , Frédéric Poitevin , Kevin M Dalton

Modern parallel computing devices, such as the graphics processing unit (GPU), have gained significant traction in scientific and statistical computing. They are particularly well-suited to data-parallel algorithms such as the particle…

统计计算 · 统计学 2015-06-12 Lawrence M. Murray , Anthony Lee , Pierre E. Jacob

The importance of hierarchical image organization has been witnessed by a wide spectrum of applications in computer vision and graphics. Different from image segmentation with the spatial whole-part consideration, this work designs a modern…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Fu Yuanbin , Guoxiaojie , Hu Qiming , Lin Di , Ma Jiayi , Ling Haibin

A variety of recent imaging techniques are able to beat the diffraction limit in fluorescence microcopy by activating and localizing subsets of the fluorescent molecules in the specimen, and repeating this process until all of the molecules…

光学 · 物理学 2010-08-27 Alexander R. Small

Upcoming many core processors are expected to employ a distributed memory architecture similar to currently available supercomputers, but parallel pattern mining algorithms amenable to the architecture are not comprehensively studied. We…

分布式、并行与集群计算 · 计算机科学 2015-10-28 Kazuki Yoshizoe , Aika Terada , Koji Tsuda

Recently, the predicate detection problem was shown to be in the parallel complexity class NC. In this paper, we give the first work-optimal parallel algorithm to solve the predicate detection problem on a distributed computation with $n$…

分布式、并行与集群计算 · 计算机科学 2020-12-03 Rohan Garg

Hashing retrieval is a pivotal technology for large-scale similarity search, widely applied in retrieval-augmented generation (RAG) for large language models (LLMs), massive image repositories, and bioinformatics sequence matching. However,…

Real-time remote sensing applications like search and rescue missions, military target detection, environmental monitoring, hazard prevention and other time-critical applications require onboard real time processing capabilities or…

分布式、并行与集群计算 · 计算机科学 2021-06-25 Mahmoud Hossam

This paper proposes a ($k,n$)-threshold secret image sharing scheme that offers flexibility in terms of meeting contrasting demands such as information security and storage efficiency with the help of a randomized kernel (binary matrix)…

密码学与安全 · 计算机科学 2019-02-26 Ravi Tej Akella , Raviteja Rekula , Vinod Pankajakshan

Linear-scaling electronic-structure techniques, also called O(N) techniques, rely heavily on the multiplication of sparse matrices, where the sparsity arises from spatial cut-offs. In order to treat very large systems, the calculations must…

材料科学 · 物理学 2009-10-31 D. R. Bowler , T. Miyazaki , M. J. Gillan

Image simulation for scanning transmission electron microscopy at atomic resolution for samples with realistic dimensions can require very large computation times using existing simulation algorithms. We present a new algorithm named PRISM…

材料科学 · 物理学 2017-04-24 Colin Ophus