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September 11, 2026
How to Assess Students Knowledge in the Age of AI
A researcher at HSE University has proposed a flowchart to help lecturers decide how to assess students who use artificial intelligence. It shows where the use of AI should be restricted and where it can be incorporated into the learning process. The article has been published in IT Professional.
September 9, 2026
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You cannot study spoken dialects from books. Instead, you need to go to a village, seek out its elders, and earn the trust of local residents before you can record hours of spontaneous stories. This is how Natalia Muravleva, Associate Professor at the Faculty of Humanities, conducts her research. Her internship in Serbia continued her long-standing study of dialects spoken by Macedonian settlers. In this interview, she discusses how diaspora cultural centres help researchers reach informants, why native speakers need to be interviewed only in their own language (otherwise, as she puts it, they may 'break'), and how a single field season helped her finalise her monograph. She also shares warm memories of autumn in Belgrade and of colleagues with whom grammar can be discussed in three languages at once.
September 9, 2026
Scientists Train Neural Network to Generate Process Plans from 3D Models
Researchers at the HSE FCS AI and Digital Science Institute have developed CAD2TechSpec, a framework that converts 3D models of mechanical parts into machining process plans—step-by-step instructions for machine tools. The solution aims to reduce the time required for the design and preparation of technical process documentation in mechanical engineering, aircraft manufacturing, and other high-tech industries. The study findings have been published in PeerJ Computer Science.

 

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About Some Irregular Degree Distributions of LDPC Codes in Two-State Channels

P. 1–4.
Ovchinnikov A., Fominykh A. A.
Language: English
DOI
Keywords: degree distributionlow-density parity-check codesGilbert-Elliott channeldensity evolutionestimation decoding

In book

WAVE ELECTRONICS AND ITS APPLICATION IN INFORMATION AND TELECOMMUNICATION SYSTEMS. 2021. (WECONF 2021) St. Petersburg, Russia, 31 May - 4 June 2021
IEEE, 2021.
Similar publications
Burst Detection and Correction for Gilbert Codes and its QC-LDPC Extensions
Veresova A., Ovchinnikov A., , in: 2024 IEEE International Multi-Conference on Engineering, Computer and Information Sciences (SIBIRCON).: Novosibirsk: IEEE, 2024. P. 47–51.
Added: November 27, 2024
Comparative Analysis of Polar and LDPC Codes in Space and Satellite Communication Systems
Ovchinnikov A., Fominykh A. A., , in: 2023 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF).: IEEE, 2023. P. 1–4.
Satellite and space communication systems have received a lot of attention as crucial transmission frameworks in recent years. In these systems, the signal is mostly degraded by fast amplitude and phase changes (fading), which cause error bursts. Hence, robust error-correcting codes that can handle error bursts are necessary for space and satellite transmissions of good ...
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Decoding of linear codes for single error bursts correction based on the determination of certain events
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In modern systems for communication, data storage and processing the error-correction capability of codes are estimated for memoryless channels. In real channels the noise is correlated, which leads to grouping error in bursts. A traditional method to fight this phenomenon is channel decorrelation, which does not allow developing of coding schemes, mostly utilizing the channel ...
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Usage of LDPC codes in a Gilbert channel
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Although low-density parity-check (LDPC) codes in modern communication standards have been extensively studied over a memoryless channel, their burst error correction capacity in channels with memory has yet to be thoroughly analyzed. The conventional approach to transmission in channels with memory uses interleaving within a buffer of several codewords. However, such an approach reduces the efficiency of ...
Added: June 22, 2023
Decoding of LDPC Codes for 5G Standard Using Source Distribution
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The paper examines the decoding of low-density parity-check codes taking into account the source distribution. More specifically, we consider the alteration of LLR calculation on the input of belief propagation decoder. The experimental results for binary input additive white Gaussian noise channel are presented using various source distributions. ...
Added: October 30, 2022
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This article examines constructing block-permutation low-density parity-check codes for error burst correction. Block-permutation constructions with superimposed zero masks are considered. We have analyzed the approach of construction such matrices consisting of two stages: finding the location of zero blocks and finding the base matrix. Experimental results containing analysis of correction capability of considered codes over the channel with memory are presented. ...
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The applying of low-density parity-check codes is considered over two-state channels with memory described by Markov and Gilbert models. The error probability using different strategies of syndrome decoding is estimated. The method of choosing the coset leaders is proposed which provides the error probability close to maximum-likelihood decoding for the considered codes. ...
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Channels with memory can be described using the Gilbert–Elliott model. To correct errors in such channels, non– binary Reed-Solomon codes are used, as well as low-density parity-check codes together with interleaving procedure or modifications of classical decoding algorithms. The purpose of this study is to compare the effectiveness of these codes when using different decoding algorithms in channels with memory. The probability ...
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Introduction: Today the investigations of post-quantum cryptosystems secure against quantum computations is the area of great interest. An important direction here is code-based cryptography utilizing the mathematical problems from error-correcting coding theory. The improvement of existing code-based systems may be achieved both in practical part (reducing the key sizes) and theoretically by using more complicated ...
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Generating Maximally Disassortative Graphs with Given Degree Distribution
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We present an algorithm that solves the problem of generating graphs, with a given degree distribution, that are maximally disassortative (with respect to Spearman’s rank correlation). As a result, we obtain a general lower bound for Spearman’s rho on graphs, which depends on the distribution of the probability mass between the head and tail of ...
Added: May 3, 2020
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