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We present a new approach for efficient approximate nearest neighbor (ANN) search in high dimensional spaces, extending the idea of Product Quantization. We propose a two-level product and vector quantization tree that reduces the number of…

计算机视觉与模式识别 · 计算机科学 2017-02-21 Patrick Wieschollek , Oliver Wang , Alexander Sorkine-Hornung , Hendrik P. A. Lensch

The advent of hardware ray tracing (RT) units has brought unprecedented realism to real-time rendered computer graphics. However, the potential of these units extends beyond graphics, offering acceleration for various computational tasks…

硬件体系结构 · 计算机科学 2025-05-22 Fangjia Shen , Aaron Barnes , Anusuya Nallathambi , Timothy G. Rogers

The availability of low cost sensors has led to an unprecedented growth in the volume of spatial data. However, the time required to evaluate even simple spatial queries over large data sets greatly hampers our ability to interactively…

数据库 · 计算机科学 2020-04-09 Harish Doraiswamy , Juliana Freire

In this paper, we consider the problem of Robust Matrix Completion (RMC) where the goal is to recover a low-rank matrix by observing a small number of its entries out of which a few can be arbitrarily corrupted. We propose a simple…

机器学习 · 计算机科学 2016-12-09 Yeshwanth Cherapanamjeri , Kartik Gupta , Prateek Jain

Over the most recent years, quantized graph neural network (QGNN) attracts lots of research and industry attention due to its high robustness and low computation and memory overhead. Unfortunately, the performance gains of QGNN have never…

分布式、并行与集群计算 · 计算机科学 2022-01-03 Yuke Wang , Boyuan Feng , Yufei Ding

Quantum circuit mapping is a critical process in quantum computing that involves adapting logical quantum circuits to adhere to hardware constraints, thereby generating physically executable quantum circuits. Current quantum circuit mapping…

量子物理 · 物理学 2025-07-08 Wenjie Sun , Xiaoyu Li , Lianhui Yu , Zhigang Wang , Geng Chen , Guowu Yang

Ray tracing accelerated with graphics processing units (GPUs) is an accurate and efficient simulation technique of wireless communication channels. In this paper, we extend a GPU-accelerated ray tracer (RT) to support the effects of…

信号处理 · 电气工程与系统科学 2024-02-21 Sara Sandh , Hamed Radpour , Benjamin Rainer , Markus Hofer , Thomas Zemen

Reverse k nearest neighbor (RkNN) queries are fundamental in spatial databases, location-based analytics, and recommendation systems. Existing state-of-the-art techniques rely on spatial pruning supported by R-trees and their variants.…

数据库 · 计算机科学 2026-05-27 Zhengyang Bai , Peng Chen , Mohamed Wahib

We consider the problem of computing a QR (or QZ) decomposition of a real, dense, tall and very skinny matrix. That is, the number of columns is tiny compared to the number of rows, rendering most computations completely or partially…

数学软件 · 计算机科学 2026-03-24 Jonas Thies , Melven Röhrig-Zöllner

Conjunctive Regular Path Queries, or CRPQs for short, are an essential construct in graph query languages. In this paper, we propose the first output-sensitive algorithm for evaluating acyclic CRPQs. It is output-sensitive in the sense that…

数据库 · 计算机科学 2025-09-30 Mahmoud Abo Khamis , Alexandru-Mihai Hurjui , Ahmet Kara , Dan Olteanu , Dan Suciu , Zilu Tian

Neural networks with sub-microsecond inference latency are required by many critical applications. Targeting such applications deployed on FPGAs, we present High Granularity Quantization (HGQ), a quantization-aware training framework that…

机器学习 · 计算机科学 2025-12-22 Chang Sun , Zhiqiang Que , Thea K. Årrestad , Vladimir Loncar , Jennifer Ngadiuba , Wayne Luk , Maria Spiropulu

Point cloud registration serves as a basis for vision and robotic applications including 3D reconstruction and mapping. Despite significant improvements on the quality of results, recent deep learning approaches are computationally…

机器人学 · 计算机科学 2024-04-02 Keisuke Sugiura , Hiroki Matsutani

Finding the convex hull is a fundamental problem in computational geometry. Quickhull is a fast algorithm for finding convex hulls. In this paper, we present VQhull, a fast parallel implementation of Quickhull that exploits vector…

计算几何 · 计算机科学 2025-10-13 Thomas Koopman , Jordy Aaldering , Bernard van Gastel , Sven-Bodo Scholz

Nowadays, there are ubiquitousness of GPS sensors in various devices collecting, transmitting and storing tremendous trajectory data. However, such an unprecedented scale of GPS data has posed an urgent demand for not only an effective…

数据库 · 计算机科学 2021-07-02 Hongbo Yin , Hong Gao , Binghao Wang , Sirui Li , Jianzhong Li

Query-based models are extensively used in 3D object detection tasks, with a wide range of pre-trained checkpoints readily available online. However, despite their popularity, these models often require an excessive number of object…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Lizhen Xu , Zehao Wu , Wenzhao Qiu , Shanmin Pang , Xiuxiu Bai , Kuizhi Mei , Jianru Xue

In recent years graphical processing units (GPUs) have become a powerful tool in scientific computing. Their potential to speed up highly parallel applications brings the power of high performance computing to a wider range of users.…

分布式、并行与集群计算 · 计算机科学 2017-04-26 Uldis Locans , Andreas Adelmann , Andreas Suter , Jannis Fischer , Werner Lustermann , Gunther Dissertori , Qiulin Wang

Recurrence quantification analysis (RQA) is a widely used tool for studying complex dynamical systems, but its standard implementation requires computationally expensive calculations of recurrence plots (RPs) and line length histograms.…

混沌动力学 · 物理学 2026-01-06 Norbert Marwan

As the length of input text increases, the key-value (KV) cache in LLMs imposes prohibitive GPU memory costs and limits long-context inference on resource constrained devices. Existing approaches, such as KV quantization and pruning, reduce…

机器学习 · 计算机科学 2025-12-24 Tenghui Li , Guoxu Zhou , Xuyang Zhao , Yuning Qiu , Qibin Zhao

ROCKET (RandOm Convolutional KErnel Transform) is a feature extraction algorithm created for Time Series Classification (TSC), published in 2019. It applies convolution with randomly generated kernels on a time series, producing features…

机器学习 · 计算机科学 2026-01-27 Ole Stüven , Keno Moenck , Thorsten Schüppstuhl

We consider the \emph{two-dimensional range maximum query (2D-RMQ)} problem: given an array $A$ of ordered values, to pre-process it so that we can find the position of the smallest element in the sub-matrix defined by a (user-specified)…

数据结构与算法 · 计算机科学 2012-04-26 Mordecai J. Golin , John Iacono , Danny Krizanc , Rajeev Raman , S. Srinivasa Rao , Sunil Shende