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We suggest a method for holding a dictionary data structure, which maps keys to values, in the spirit of Bloom Filters. The space requirements of the dictionary we suggest are much smaller than those of a hashtable. We allow storing n keys,…

数据结构与算法 · 计算机科学 2008-04-14 Ely Porat

Hierarchical clustering is a fundamental task often used to discover meaningful structures in data, such as phylogenetic trees, taxonomies of concepts, subtypes of cancer, and cascades of particle decays in particle physics. Typically…

Understanding fundamental limits of the various technologies suggested for future 5G and beyond cellular systems is crucial for developing efficient state-of-the-art designs. A leading technology of major interest is non-orthogonal…

信息论 · 计算机科学 2018-01-16 Benjamin M. Zaidel , Ori Shental , Shlomo Shamai

Haplotype-resolved de novo assembly is the ultimate solution to the study of sequence variations in a genome. However, existing algorithms either collapse heterozygous alleles into one consensus copy or fail to cleanly separate the…

基因组学 · 定量生物学 2021-02-03 Haoyu Cheng , Gregory T Concepcion , Xiaowen Feng , Haowen Zhang , Heng Li

Factorized representations (FRs) are a well-known tool to succinctly represent results of join queries and have been originally defined using the named database perspective. We define FRs in the unnamed database perspective and use them to…

数据库 · 计算机科学 2024-12-09 Benny Kimelfeld , Wim Martens , Matthias Niewerth

A Hadamard-Hitchcock decomposition of a multidimensional array is a decomposition that expresses the latter as a Hadamard product of several tensor rank decompositions. Such decompositions can encode probability distributions that arise…

代数几何 · 数学 2025-10-30 Alessandro Oneto , Nick Vannieuwenhoven

This paper introduces a model theory for resolution on Higher Order Hereditarily Harrop formulae (HOHH), the logic underlying the Lambda-Prolog programming language, and proves soundness and completeness of resolution. The semantics and the…

编程语言 · 计算机科学 2024-05-28 Gianluca Amato , Mary DeMarco , James Lipton

Non-orthogonal multiple access (NOMA) is a promising solution for secure transmission under massive access. However, in addition to the uncertain channel state information (CSI) of the eavesdroppers due to their passive nature, the CSI of…

信息论 · 计算机科学 2020-07-28 Zongze Li , Minghua Xia , Miaowen Wen , Yik-Chung Wu

We prove several new results concerning the pure quantum polynomial hierarchy (pureQPH). First, we show that QMA(2) is contained in pureQSigma2, that is, two unentangled existential provers can be simulated by competing existential and…

量子物理 · 物理学 2025-10-09 Sabee Grewal , Dorian Rudolph

We formally introduce a systematic (de/re)-composition approach, based on the algebraic formalism of "Multi-Dimensional Homomorphisms (MDHs)". Our approach is designed as general enough to be applicable to a wide range of data-parallel…

编程语言 · 计算机科学 2025-07-01 Ari Rasch

The retrieval problem is the problem of associating data with keys in a set. Formally, the data structure must store a function f: U ->{0,1}^r that has specified values on the elements of a given set S, a subset of U, |S|=n, but may have…

数据结构与算法 · 计算机科学 2008-03-27 Martin Dietzfelbinger , Rasmus Pagh

Heffter arrays are combinatorial structures used to construct orthogonal cyclic cycle decompositions and biembeddings of complete graphs onto surfaces. A Heffter array $H(m,n;h,k)$ is an $m \times n$ partially filled array with distinct…

组合数学 · 数学 2026-04-23 Erik Pelttari , Selda Kücükçifçi , E. Şule Yazıcı

The monotone minimal perfect hash function (MMPHF) problem is the following indexing problem. Given a set $S= \{s_1,\ldots,s_n\}$ of $n$ distinct keys from a universe $U$ of size $u$, create a data structure $DS$ that answers the following…

数据结构与算法 · 计算机科学 2022-07-26 Sepehr Assadi , Martin Farach-Colton , William Kuszmaul

In this paper, pattern division multiple access with large-scale antenna array (LSA-PDMA) is proposed as a novel non-orthogonal multiple access (NOMA) scheme. In the proposed scheme, pattern is designed in both beam domain and power domain…

信息论 · 计算机科学 2017-03-22 Peng Li , Yanxiang Jiang , Shaoli Kang , Fuchun Zheng , Xiaohu You

An index for a finite automaton is a powerful data structure that supports locating paths labeled with a query pattern, thus solving pattern matching on the underlying regular language. In this paper, we solve the long-standing problem of…

数据结构与算法 · 计算机科学 2020-07-16 Nicola Cotumaccio , Nicola Prezza

We propose an unbounded fully homomorphic encryption scheme, i.e. a scheme that allows one to compute on encrypted data for any desired functions without needing to decrypt the data or knowing the decryption keys. This is a rational…

密码学与安全 · 计算机科学 2023-01-31 Zhiyong Zheng , Fengxia Liu , Kun Tian

In today's data-driven world, recommendation systems personalize user experiences across industries but rely on sensitive data, raising privacy concerns. Fully homomorphic encryption (FHE) can secure these systems, but a significant…

密码学与安全 · 计算机科学 2025-09-04 Moontaha Nishat Chowdhury , André Bauer , Minxuan Zhou

The Hidden Web is the vast repository of informational databases available only through search form interfaces, accessible by therein typing a set of keywords in the search forms. Typically, a Hidden Web crawler is employed to autonomously…

信息检索 · 计算机科学 2013-11-05 Sonali Gupta , Komal Kumar Bhatia

An \itbf{indeterminate string} (or, more simply, just a \itbf{string}) $\s{x} = \s{x}[1..n]$ on an alphabet $\Sigma$ is a sequence of nonempty subsets of $\Sigma$. We say that $\s{x}[i_1]$ and $\s{x}[i_2]$ \itbf{match} (written $\s{x}[i_1]…

数据结构与算法 · 计算机科学 2015-03-02 Ali Alatabbi , M. Sohel Rahman , W. F. Smyth

Bloom filter is a compact memory-efficient probabilistic data structure supporting membership testing, i.e., to check whether an element is in a given set. However, as Bloom filter maps each element with uniformly random hash functions, few…

数据库 · 计算机科学 2021-06-15 Rongbiao Xie , Meng Li , Zheyu Miao , Rong Gu , He Huang , Haipeng Dai , Guihai Chen