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Existing black box search methods have achieved high success rate in generating adversarial attacks against NLP models. However, such search methods are inefficient as they do not consider the amount of queries required to generate…

Computation and Language · Computer Science 2021-09-13 Rishabh Maheshwary , Saket Maheshwary , Vikram Pudi

Mechanical metamaterials with bistable elements can store vast amounts of information, but writing these memories requires impractical local control or lengthy multi-cycle protocols. We overcome this limitation with a dynamic control…

Soft Condensed Matter · Physics 2025-09-16 E. Gutierrez-Prieto , C. M. Meulblok , M. van Hecke , P. M. Reis

Searching on bipartite graphs is basal and versatile to many real-world Web applications, e.g., online recommendation, database retrieval, and query-document searching. Given a query node, the conventional approaches rely on the similarity…

Information Retrieval · Computer Science 2023-04-04 Yankai Chen , Yixiang Fang , Yifei Zhang , Irwin King

Quantum computing has evolved quickly in recent years and is showing significant benefits in a variety of fields, especially in the realm of cybersecurity. The combination of software used to locate the most frequent hashes and $n$-grams…

Quantum Physics · Physics 2022-05-09 Nicholas R. Allgood , Charles K. Nicholas

Code retrieval, which retrieves code snippets based on users' natural language descriptions, is widely used by developers and plays a pivotal role in real-world software development. The advent of deep learning has shifted the retrieval…

Software Engineering · Computer Science 2024-12-17 Wenchao Gu , Ensheng Shi , Yanlin Wang , Lun Du , Shi Han , Hongyu Zhang , Dongmei Zhang , Michael R. Lyu

A history-independent data structure does not reveal the history of operations applied to it, only its current logical state, even if its internal state is examined. This paper studies history-independent concurrent dictionaries, in…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-03-28 Hagit Attiya , Michael A. Bender , Martín Farach-Colton , Rotem Oshman , Noa Schiller

The security of modern electronic devices relies on secret keys stored on secure hardware modules as the root-of-trust (RoT). Extracting those keys would break the security of the entire system. As shown before, sophisticated side-channel…

Cryptography and Security · Computer Science 2021-02-24 Thilo Krachenfels , Tuba Kiyan , Shahin Tajik , Jean-Pierre Seifert

Linear regression is a fundamental and primitive problem in supervised machine learning, with applications ranging from epidemiology to finance. In this work, we propose methods for speeding up distributed linear regression. We do so by…

Information Theory · Computer Science 2024-04-02 Neophytos Charalambides , Hessam Mahdavifar , Mert Pilanci , Alfred O. Hero

A novel fast recursive coding technique is proposed. It operates with only integer values not longer 8 bits and is multiplication free. Recursion the algorithm is based on indirectly provides rather effective coding of symbols for very…

Information Theory · Computer Science 2007-08-22 Nikolay Ponomarenko , Vladimir Lukin , Karen Egiazarian , Jaakko Astola , Boris Y Ryabko

We present a fast algorithm for linear least squares problems governed by hierarchically block separable (HBS) matrices. Such matrices are generally dense but data-sparse and can describe many important operators including those derived…

Numerical Analysis · Mathematics 2014-06-17 Kenneth L. Ho , Leslie Greengard

At CCS 2015 Naveed et al. presented first attacks on efficiently searchable encryption, such as deterministic and order-preserving encryption. These plaintext guessing attacks have been further improved in subsequent work, e.g. by Grubbs et…

Cryptography and Security · Computer Science 2017-09-28 Florian Kerschbaum , Anselme Tueno

This paper is concerned with the inverse scattering problem by an unbounded rough surface. A direct imaging method is proposed to reconstruct the rough surface from the scattered near-field Cauchy data generating by point sources and…

Numerical Analysis · Mathematics 2018-05-01 Xiaoli Liu , Bo Zhang , Haiwen Zhang

In a zero-trust fabless paradigm, designers are increasingly concerned about hardware-based attacks on the semiconductor supply chain. Logic locking is a design-for-trust method that adds extra key-controlled gates in the circuits to…

Cryptography and Security · Computer Science 2024-02-07 Yeganeh Aghamohammadi , Amin Rezaei

A minimal perfect hash function bijectively maps a key set $S$ out of a universe $U$ into the first $|S|$ natural numbers. Minimal perfect hash functions are used, for example, to map irregularly-shaped keys, such as string, in a compact…

Data Structures and Algorithms · Computer Science 2019-12-03 Emmanuel Esposito , Thomas Mueller Graf , Sebastiano Vigna

Modern business applications and scientific databases call for inherently dynamic data storage environments. Such environments are characterized by two challenging features: (a) they have little idle system time to devote on physical…

Databases · Computer Science 2012-03-02 Felix Halim , Stratos Idreos , Panagiotis Karras , Roland H. C. Yap

Finding similar images is a necessary operation in many multimedia applications. Images are often represented and stored as a set of high-dimensional features, which are extracted using localized feature extraction algorithms. Locality…

Multimedia · Computer Science 2020-10-16 Omid Jafari , Parth Nagarkar , Jonathan Montaño

Graphical passwords are implemented as an alternative scheme to replace alphanumeric passwords to help users to memorize their password. However, most of the graphical password systems are vulnerable to shoulder-surfing attack due to the…

Cryptography and Security · Computer Science 2023-05-12 Amanul Islam , Fazidah Othman , Nazmus Sakib , Hafiz Md. Hasan Babu

Many real world problems require fast and efficient lexical comparison of large numbers of short text strings. Search personalization is one such domain. We introduce the use of feature bit vectors using the hashing trick for improving…

Information Retrieval · Computer Science 2019-10-22 Braddock Gaskill

A minimal perfect hash function (MPHF) bijectively maps a set S of objects to the first |S| integers. It can be used as a building block in databases and data compression. RecSplit [Esposito et al., ALENEX'20] is currently the most space…

Data Structures and Algorithms · Computer Science 2023-07-06 Dominik Bez , Florian Kurpicz , Hans-Peter Lehmann , Peter Sanders

In this paper, we present a method to efficiently generate large, free, and guaranteed convex space among arbitrarily cluttered obstacles. Our method operates directly on point clouds, avoids expensive calculations, and processes thousands…

Robotics · Computer Science 2020-11-17 Xingguang Zhong , Yuwei Wu , Dong Wang , Qianhao Wang , Chao Xu , Fei Gao