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We introduce a new family of priority-queue data structures: partition-based simple heaps. The structures consist of $O(\log n)$ doubly-linked lists; order is enforced among data in different lists, but the individual lists are unordered.…

数据结构与算法 · 计算机科学 2026-03-03 Gerth Stølting Brodal , John Iacono , Casper Moldrup Rysgaard , Sebastian Wild

Content-Addressable Memory (CAM) is a powerful abstraction for building memory caches, routing tables and hazard detection logic. Without a native CAM structure available on FPGA devices, their functionality must be emulated using the…

硬件体系结构 · 计算机科学 2020-04-24 Thomas B. Preußer , Monica Chiosa , Alexander Weiss , Gustavo Alonso

DIMM-compatible persistent memory unites memory and storage. Prior works utilize persistent memory either by combining the filesystem with direct access on memory mapped files or by managing it as a collection of objects while abolishing…

操作系统 · 计算机科学 2022-04-08 Derrick Greenspan , Naveed Ul Mustafa , Zoran Kolega , Mark Heinrich , Yan Solihin

As data volumes grow while memory capacity remains limited, disk-resident graph-based approximate nearest neighbor (ANN) methods have become a practical alternative to memory-resident designs, shifting the bottleneck from computation to…

数据库 · 计算机科学 2026-03-03 Xiaoyu Chen , Jinxiu Qu , Yitong Song , Shuhang Lu , Huiling Li , Minghui Jiang , Wei Zhou , Jianliang Xu , Xuanhe Zhou , Fan Wu

This thesis presents a number of results related to path traversal in trees and graphs. In particular, we focus on data structures which allow such traversals to be performed efficiently in the external memory setting. In addition, for…

数据结构与算法 · 计算机科学 2013-08-22 Craig Dillabaugh

The NP-complete combinatorial optimization task of assigning offsets to a set of buffers with known sizes and lifetimes so as to minimize total memory usage is called dynamic storage allocation (DSA). Existing DSA implementations bypass the…

We investigate the limits of one of the fundamental ideas in data structures: fractional cascading. This is an important data structure technique to speed up repeated searches for the same key in multiple lists and it has numerous…

数据结构与算法 · 计算机科学 2020-11-05 Peyman Afshani

Orthonormalized updates accelerate training, improve stability, and enable robust hyperparameter transfer, but existing methods like Muon rely on dense matrix operations that clash with sharded weights in large-scale LLM training, causing…

机器学习 · 计算机科学 2025-09-16 Kwangjun Ahn , Byron Xu , Natalie Abreu , Ying Fan , Gagik Magakyan , Pratyusha Sharma , Zheng Zhan , John Langford

A new array based data structure named black-white array (BWA) is introduced as an effective and efficient alternative to the list or tree based data structures for dynamic data set. It consists of two sub-arrays, one white and one black of…

数据结构与算法 · 计算机科学 2020-04-21 Z. George Mou

Planar Embedding is a drawing of a graph on the plane such that the edges do not intersect each other except at the vertices. We know that testing the planarity of a graph and computing its embedding (if it exists), can efficiently be…

数据结构与算法 · 计算机科学 2023-07-19 Samir Datta , Asif Khan , Anish Mukherjee

In this paper, we present a quantum algorithm for dynamic programming approach for problems on directed acyclic graphs (DAGs). The running time of the algorithm is $O(\sqrt{\hat{n}m}\log \hat{n})$, and the running time of the best known…

数据结构与算法 · 计算机科学 2019-06-21 Kamil Khadiev , Liliya Safina

Local moments are used for local regression, to compute statistical measures such as sums, averages, and standard deviations, and to approximate probability distributions. We consider the case where the data source is a very large I/O array…

数据结构与算法 · 计算机科学 2020-04-28 Daniel Lemire , Owen Kaser

This paper presents an efficient algorithm for the least-squares problem using the point-to-plane cost, which aims to jointly optimize depth sensor poses and plane parameters for 3D reconstruction. We call this least-squares problem…

计算机视觉与模式识别 · 计算机科学 2020-08-18 Lipu Zhou , Daniel Koppel , Hui Ju , Frank Steinbruecker , Michael Kaess

We consider space-bounded computations on a random-access machine (RAM) where the input is given on a read-only random-access medium, the output is to be produced to a write-only sequential-access medium, and the available workspace allows…

数据结构与算法 · 计算机科学 2015-10-27 Omar Darwish , Amr Elmasry , Jyrki Katajainen

Open Modification Search (OMS) is a promising algorithm for mass spectrometry analysis that enables the discovery of modified peptides. However, OMS encounters challenges as it exponentially extends the search scope. Existing OMS…

硬件体系结构 · 计算机科学 2024-11-15 Keming Fan , Wei-Chen Chen , Sumukh Pinge , H. -S. Philip Wong , Tajana Rosing

With the imminent slowing down of DRAM scaling, Phase Change Memory (PCM) is emerging as a lead alternative for main memory technology. While PCM achieves low energy due to various technology-specific advantages, PCM is significantly slower…

硬件体系结构 · 计算机科学 2015-04-17 Hamza Bin Sohail , Balajee Vamanan , T. N. Vijaykumar

Indexing is a well-known database technique used to facilitate data access and speed up query processing. Nevertheless, the construction and modification of indexes are very expensive. In traditional approaches, all records in the database…

数据库 · 计算机科学 2023-06-22 Wojciech Macyna , Michal Kukowski

Accurate localization is an essential technology for the flexible navigation of robots in large-scale environments. Both SLAM-based and map-based localization will increase the computing load due to the increase in map size, which will…

机器人学 · 计算机科学 2024-04-30 Yixiao Feng , Zhou Jiang , Yongliang Shi , Yunlong Feng , Xiangyu Chen , Hao Zhao , Guyue Zhou

Lidar SLAM plays a significant role in mobile robot navigation and high-definition map construction. However, existing methods often face a trade-off between localization accuracy and system robustness in scenarios with a high proportion of…

机器人学 · 计算机科学 2025-12-02 Yongxin Shao , Aihong Tan , Binrui Wang , Yinlian Jin , Licong Guan , Peng Liao

In this paper, we present a quantum algorithm for the dynamic programming approach for problems on directed acyclic graphs (DAGs). The running time of the algorithm is $O(\sqrt{\hat{n}m}\log \hat{n})$, and the running time of the best known…

量子物理 · 物理学 2023-01-02 Kamil Khadiev , Liliya Safina