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相关论文: Avoiding Rotated Bitboards with Direct Lookup

200 篇论文

Given a conjunctive query $Q$ and a database $D$, a direct access to the answers of $Q$ over $D$ is the operation of returning, given an index $k$, the $k$-th answer for some order on its answers. While this problem is $\#\mathcal{P}$-hard…

数据库 · 计算机科学 2026-03-18 Florent Capelli , Nofar Carmeli , Oliver Irwin , Sylvain Salvati

With hash tables being one of the most used data structures, Lehmann, Sanders and Walzer propose a novel, light-weight hash table, referred to as Slick Hash. Their idea is to hit a sweet spot between space consumption and speed. Building on…

数据结构与算法 · 计算机科学 2024-10-01 Jan Oberst

The optimal branch number of MDS matrices makes them a preferred choice for designing diffusion layers in many block ciphers and hash functions. Consequently, various methods have been proposed for designing MDS matrices, including search…

信息论 · 计算机科学 2026-04-10 Kishan Chand Gupta , Sumit Kumar Pandey , Susanta Samanta

Reducing control complexity is essential for achieving large-scale quantum computing. However, reducing control knobs may compromise the ability to independently address each qubit. Recent progress in neutral atom-based platforms suggests…

新兴技术 · 计算机科学 2024-09-05 Daniel Bochen Tan , Shuohao Ping , Jason Cong

Object detection has been widely used in many safety-critical tasks, such as autonomous driving. However, its vulnerability to adversarial examples has not been sufficiently studied, especially under the practical scenario of black-box…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Siyuan Liang , Baoyuan Wu , Yanbo Fan , Xingxing Wei , Xiaochun Cao

Direct access asks for the retrieval of query answers by their ranked position, given a query and a desired order. While the time complexity of data structures supporting such accesses has been studied in depth, and efficient algorithms for…

数据库 · 计算机科学 2026-03-23 Jiayin Hu , Nikolaos Tziavelis

Chessboard and chess piece recognition is a computer vision problem that has not yet been efficiently solved. However, its solution is crucial for many experienced players who wish to compete against AI bots, but also prefer to make…

计算机视觉与模式识别 · 计算机科学 2020-06-25 Maciej A. Czyzewski , Artur Laskowski , Szymon Wasik

We describe a space-time optimized circuit for the table lookup subroutine from lattice-surgery surface code primitives respecting 2D grid connectivity. Table lookup circuits are ubiquitous in quantum computing, allowing the presented…

量子物理 · 物理学 2023-11-27 Thomas Häner , Vadym Kliuchnikov , Martin Roetteler , Mathias Soeken

Block ciphers are in widespread use since the 1970s. Their iterated structure is prone to numerous round invariant attacks for example in Linear Cryptanalysis (LC). The next step is to look at non-linear polynomial invariants cf.…

密码学与安全 · 计算机科学 2020-02-11 Nicolas T. Courtois

In rotor-router aggregation on the square lattice Z^2, particles starting at the origin perform deterministic analogues of random walks until reaching an unoccupied site. The limiting shape of the cluster of occupied sites is a disk. We…

组合数学 · 数学 2011-09-28 Wouter Kager , Lionel Levine

Hyperplane hashing aims at rapidly searching nearest points to a hyperplane, and has shown practical impact in scaling up active learning with SVMs. Unfortunately, the existing randomized methods need long hash codes to achieve reasonable…

机器学习 · 计算机科学 2012-06-22 Wei Liu , Jun Wang , Yadong Mu , Sanjiv Kumar , Shih-Fu Chang

This paper presents an application of adaptive control algorithm in order to reject the external disturbances in dual-stage hard disk drives. For this purpose, a dual PID controller is first designed without the plant exposure to external…

系统与控制 · 计算机科学 2018-05-08 Mohammad Amin Dashti , Ali Chaibakhsh

The rise in virtual and mixed reality systems has prompted a resurgence of interest in two-dimensional and three-dimensional real-time computer generated holography. Phase randomisation is an integral part of holographic projection as it…

信号处理 · 电气工程与系统科学 2020-04-09 Peter J. Christopher , Timothy D. Wilkinson

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

This paper proposes a method for identification of a user`s fixed string set (which can be a command/instruction set for a terminal or microprocessor). This method is fast and has very small memory requirements, compared to a traditional…

人机交互 · 计算机科学 2007-05-23 Dimitrios Skraparlis

In a basic related-key attack against a block cipher, the adversary has access to encryptions under keys that differ from the target key by bit-flips. In this short note we show that for a quantum adversary such attacks are quite powerful:…

量子物理 · 物理学 2013-11-15 Martin Roetteler , Rainer Steinwandt

Representing visual data using compact binary codes is attracting increasing attention as binary codes are used as direct indices into hash table(s) for fast non-exhaustive search. Recent methods show that ranking binary codes using…

数据结构与算法 · 计算机科学 2023-06-07 Zhenyu Weng , Huiping Zhuang , Haizhou Li , Zhiping Lin

As an approximate nearest neighbor search technique, hashing has been widely applied in large-scale image retrieval due to its excellent efficiency. Most supervised deep hashing methods have similar loss designs with embedding learning,…

计算机视觉与模式识别 · 计算机科学 2019-10-22 Shen Chen , Liujuan Cao , Mingbao Lin , Yan Wang , Xiaoshuai Sun , Chenglin Wu , Jingfei Qiu , Rongrong Ji

This work focuses on representing very high-dimensional global image descriptors using very compact 64-1024 bit binary hashes for instance retrieval. We propose DeepHash: a hashing scheme based on deep networks. Key to making DeepHash work…

计算机视觉与模式识别 · 计算机科学 2016-02-17 Jie Lin , Olivier Morere , Vijay Chandrasekhar , Antoine Veillard , Hanlin Goh

This paper proposes a new mechanism for pruning a search game-tree in computer chess. The algorithm stores and then reuses chains or sequences of moves, built up from previous searches. These move sequences have a built-in forward-pruning…

人工智能 · 计算机科学 2014-03-05 Kieran Greer