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Large scale-free graphs are famously difficult to process efficiently: the skewed vertex degree distribution makes it difficult to obtain balanced partitioning. Our research instead aims to turn this into an advantage by partitioning the…

分布式、并行与集群计算 · 计算机科学 2015-10-05 Scott Sallinen , Abdullah Gharaibeh , Matei Ripeanu

The 2-D discrete wavelet transform (DWT) can be found in the heart of many image-processing algorithms. Until recently, several studies have compared the performance of such transform on various shared-memory parallel architectures,…

性能 · 计算机科学 2017-05-30 David Barina , Michal Kula , Michal Matysek , Pavel Zemcik

Balanced butterfly counting, corresponding to counting balanced (2, 2)-bicliques, is a fundamental primitive in the analysis of signed bipartite graphs and provides a basis for studying higher-order structural properties such as clustering…

分布式、并行与集群计算 · 计算机科学 2026-01-27 Mekala Kiran , Apurba Das , Suman Banerjee , Tathagata Ray

Graph processing requires irregular, fine-grained random access patterns incompatible with contemporary off-chip memory architecture, leading to inefficient data access. This inefficiency makes graph processing an extremely memory-bound…

硬件体系结构 · 计算机科学 2025-03-11 Changmin Shin , Jaeyong Song , Hongsun Jang , Dogeun Kim , Jun Sung , Taehee Kwon , Jae Hyung Ju , Frank Liu , Yeonkyu Choi , Jinho Lee

We consider the problem of counting motifs in bipartite affiliation networks, such as author-paper, user-product, and actor-movie relations. We focus on counting the number of occurrences of a "butterfly", a complete $2 \times 2$ biclique,…

离散数学 · 计算机科学 2018-03-19 Seyed-Vahid Sanei-Mehri , Ahmet Erdem Sariyuce , Srikanta Tirthapura

Driven by the increasing demand for accurate and efficient representation of 3D data in various domains, point cloud sampling has emerged as a pivotal research topic in 3D computer vision. Recently, learning-to-sample methods have garnered…

计算机视觉与模式识别 · 计算机科学 2025-06-02 Chengzhi Wu , Yuxin Wan , Hao Fu , Julius Pfrommer , Zeyun Zhong , Junwei Zheng , Jiaming Zhang , Jürgen Beyerer

The two-dimensional discrete wavelet transform has a huge number of applications in image-processing techniques. Until now, several papers compared the performance of such transform on graphics processing units (GPUs). However, all of them…

计算机视觉与模式识别 · 计算机科学 2017-05-24 David Barina , Michal Kula , Michal Matysek , Pavel Zemcik

The butterfly algorithm is a fast algorithm which approximately evaluates a discrete analogue of the integral transform \int K(x,y) g(y) dy at large numbers of target points when the kernel, K(x,y), is approximately low-rank when restricted…

数值分析 · 数学 2013-11-26 Jack Poulson , Laurent Demanet , Nicholas Maxwell , Lexing Ying

Parker and L\^e introduced random butterfly transforms (RBTs) as a preprocessing technique to replace pivoting in dense LU factorization. Unfortunately, their FFT-like recursive structure restricts the dimensions of the matrix. Furthermore,…

数值分析 · 数学 2024-10-14 Neil Lindquist , Piotr Luszczek , Jack Dongarra

Study of general purpose computation by GPU (Graphics Processing Unit) can improve the image processing capability of micro-computer system. This paper studies the parallelism of the different stages of decimation in time radix 2 FFT…

数学软件 · 计算机科学 2015-06-01 Feifei Shen , Zhenjian Song , Congrui Wu , Jiaqi Geng , Qingyun Wang

This article introduces an algorithm to draw random discrete uniform variables within a given range of size n from a source of random bits. The algorithm aims to be simple to implement and optimal both with regards to the amount of random…

数据结构与算法 · 计算机科学 2013-04-09 Jérémie Lumbroso

In non-linear systems, where explicit analytic solutions usually can't be found, visualisation is a powerful approach which can give insights into the dynamical behaviour of models; it is also crucial for teaching this area of mathematics.…

数学软件 · 计算机科学 2016-01-20 Robert Merrison-Hort

Linear-time algorithms that are traditionally used to shuffle data on CPUs, such as the method of Fisher-Yates, are not well suited to implementation on GPUs due to inherent sequential dependencies, and existing parallel shuffling…

分布式、并行与集群计算 · 计算机科学 2022-02-04 Rory Mitchell , Daniel Stokes , Eibe Frank , Geoffrey Holmes

Bloom filters are a fundamental data structure for approximate membership queries, with applications ranging from data analytics to databases and genomics. Several variants have been proposed to accommodate parallel architectures. GPUs,…

分布式、并行与集群计算 · 计算机科学 2025-12-18 Daniel Jünger , Kevin Kristensen , Yunsong Wang , Xiangyao Yu , Bertil Schmidt

Bipartite graphs are commonly used to model relationships between two distinct entities in real-world applications, such as user-product interactions, user-movie ratings and collaborations between authors and publications. A butterfly (a…

数据结构与算法 · 计算机科学 2026-04-28 Lingkai Meng , Long Yuan , Xuemin Lin , Chengjie Li , Kai Wang , Wenjie Zhang

Probabilistic breadth-first traversals (BPTs) are used in many network science and graph machine learning applications. In this paper, we are motivated by the application of BPTs in stochastic diffusion-based graph problems such as…

分布式、并行与集群计算 · 计算机科学 2024-06-21 Reece Neff , Mostafa Eghbali Zarch , Marco Minutoli , Mahantesh Halappanavar , Antonino Tumeo , Ananth Kalyanaraman , Michela Becchi

Discrete diffusion language models have emerged as a competitive alternative to auto-regressive language models, but training them efficiently under limited parameter and memory budgets remains challenging. Modern architectures are…

计算与语言 · 计算机科学 2026-04-07 Zihao Wu , Haoming Yang , Juncheng Dong , Vahid Tarokh

Differentiable architecture search (DARTS) provided a fast solution in finding effective network architectures, but suffered from large memory and computing overheads in jointly training a super-network and searching for an optimal…

计算机视觉与模式识别 · 计算机科学 2020-04-08 Yuhui Xu , Lingxi Xie , Xiaopeng Zhang , Xin Chen , Guo-Jun Qi , Qi Tian , Hongkai Xiong

A novel and scalable geometric multi-level algorithm is presented for the numerical solution of elliptic partial differential equations, specially designed to run with high occupancy of streaming processors inside Graphics Processing…

数学软件 · 计算机科学 2017-03-22 J. T. Becerra-Sagredo , F. Mandujano , C. Malaga

Graph Pattern Mining (GPM) is an important, rapidly evolving, and computation demanding area. GPM computation relies on subgraph enumeration, which consists in extracting subgraphs that match a given property from an input graph. Graphics…

分布式、并行与集群计算 · 计算机科学 2022-12-12 Samuel Ferraz , Vinicius Dias , Carlos H. C. Teixeira , George Teodoro , Wagner Meira