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The sum-rank metric is the mixture of the Hamming and rank metrics. The sum-rank metric found its application in network coding, locally repairable codes, space-time coding, and quantum-resistant cryptography. Linearized Reed-Solomon (LRS)…

信息论 · 计算机科学 2026-02-10 Kuo Shang , Chen Yuan , Ruiqi Zhu

A code of length $n$ is said to be (combinatorially) $(\rho,L)$-list decodable if the Hamming ball of radius $\rho n$ around any vector in the ambient space does not contain more than $L$ codewords. We study a recently introduced class of…

信息论 · 计算机科学 2023-05-10 Harshithanjani Athi , Rasagna Chigullapally , Prasad Krishnan , Lalitha Vadlamani

We investigate a stationary process's crypticity---a measure of the difference between its hidden state information and its observed information---using the causal states of computational mechanics. Here, we motivate crypticity and cryptic…

数据分析、统计与概率 · 物理学 2015-05-30 John R. Mahoney , Christopher J. Ellison , Ryan G. James , James P. Crutchfield

In this work it is shown that locally repairable codes (LRCs) can be list-decoded efficiently beyond the Johnson radius for a large range of parameters by utilizing the local error-correction capabilities. The corresponding decoding radius…

信息论 · 计算机科学 2020-09-16 Lukas Holzbaur , Sven Puchinger , Antonia Wachter-Zeh

Shaping gain is attained in schemes where a shaped subcode is chosen from a larger codebook by a codeword selection process. This includes the popular method of Trellis Shaping (TS), originally proposed by Forney for average power…

信息论 · 计算机科学 2013-08-28 Stella Achtenberg , Dan Raphaeli

The secrecy performance of a source-channel model is studied in the context of lossy source compression over a noisy broadcast channel. The source is causally revealed to the eavesdropper during decoding. The fidelity of the transmission to…

信息论 · 计算机科学 2015-06-24 Eva C. Song , Paul Cuff , H. Vincent Poor

For source sequences of length L symbols we proposed to use a more realistic value to the usual benchmark of number of code letters by source letters. Our idea is based on a quantifier of information fluctuation of a source, F(U), which…

信息论 · 计算机科学 2019-09-27 H. M. de Oliveira , Raydonal Ospina

Non-malleable codes, introduced by Dziembowski, Pietrzak and Wichs (ICS 2010), encode messages $s$ in a manner so that tampering the codeword causes the decoder to either output $s$ or a message that is independent of $s$. While this is an…

信息论 · 计算机科学 2013-09-03 Mahdi Cheraghchi , Venkatesan Guruswami

We give new constructions of two classes of algebraic code families which are efficiently list decodable with small output list size from a fraction $1-R-\epsilon$ of adversarial errors where $R$ is the rate of the code, for any desired…

计算复杂性 · 计算机科学 2020-11-17 Venkatesan Guruswami , Chaoping Xing

Fundamental results on secret sharing schemes (SSSs) are discussed in the setting where security and share size are measured by (conditional) min-entropies. We first formalize a unified framework of SSSs based on (conditional) R\'enyi…

密码学与安全 · 计算机科学 2016-11-15 Mitsugu Iwamoto , Junji Shikata

In this paper, we propose a linear complexity encoding method for arbitrary LDPC codes. We start from a simple graph-based encoding method ``label-and-decide.'' We prove that the ``label-and-decide'' method is applicable to Tanner graphs…

信息论 · 计算机科学 2016-11-18 Jin Lu , José M. F. Moura

Computing the key rate in quantum key distribution (QKD) protocols is a long standing challenge. Analytical methods are limited to a handful of protocols with highly symmetric measurement bases. Numerical methods can handle arbitrary…

量子物理 · 物理学 2023-05-25 Mateus Araújo , Marcus Huber , Miguel Navascués , Matej Pivoluska , Armin Tavakoli

We consider the distributed source coding problem in which correlated data picked up by scattered sensors has to be encoded separately and transmitted to a common receiver, subject to a rate-distortion constraint. Although near-tooptimal…

信息论 · 计算机科学 2008-09-09 G. Maierbacher , J. Barros

A lossy source coding problem with privacy constraint is studied in which two correlated discrete sources $X$ and $Y$ are compressed into a reconstruction $\hat{X}$ with some prescribed distortion $D$. In addition, a privacy constraint is…

信息论 · 计算机科学 2015-04-23 Farshid Mokhtarinezhad , Joerg Kliewer , Osvaldo Simeone

We propose a new interpretation of measures of information and disorder by connecting these concepts to group theory in a new way. Entropy and group theory are connected here by their common relation to sets of permutations. A combinatorial…

信息论 · 计算机科学 2019-11-25 David J. Galas

List decoding for arbitrarily varying channels (AVCs) under state constraints is investigated. It is shown that rates within $\epsilon$ of the randomized coding capacity of AVCs with input-dependent state can be achieved under maximal error…

信息论 · 计算机科学 2009-10-06 Anand D. Sarwate , Michael Gastpar

In this paper, we revisit the problem of characterizing the secrecy capacity of minimum storage regenerating (MSR) codes under the passive $(l_1,l_2)$-eavesdropper model, where the eavesdropper has access to data stored on $l_1$ nodes and…

信息论 · 计算机科学 2016-08-10 Kun Huang , Udaya Parampalli , Ming Xian

We study the problem of secure joint source-channel coding for multimodal semantic sources transmitted over noisy wiretap channels. The source model consists of $m$ modalities (e.g., image, audio, and sensor data), all represented as random…

信息论 · 计算机科学 2026-05-26 Denis Kozlov , Mahtab Mirmohseni , Rahim Tafazolli

This paper studies two crucial problems in the context of coded distributed storage systems directly related to their performance: 1) for a fixed alphabet size, determine the minimum number of servers the system must have for its service…

信息论 · 计算机科学 2024-07-02 Altan B. Kilic , Alberto Ravagnani , Emina Soljanin

We introduce the notion of trace-norm isometric encoding and explore its implications for passive and active methods to protect quantum information against errors. Beside providing an operational foundations to the "subsystems principle"…

量子物理 · 物理学 2013-05-29 Francesco Ticozzi , Lorenza Viola