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Features of the deterministic replay in the case of a minimum device set
Programming and Computer Software. 2016. Vol. 42. No. 3. P. 174–186.
A technology of the deterministic replay of an execution process in virtual machines can be used for debugging, improving reliability and robustness, software development and incident investigation (including reverse engineering of malware). The paper describes an implementation of deterministic replay for guest machines based on IA-32 in the emulator QEMU. This implementation minimizes the list of replayed devices. The organization of QEMU is discussed in detail, and the techniques used in the implementation are thoroughly explained. The key performance characteristics, such as the size of log of nondeterministic events and slowdown are experimentally measured.
Shabanov N., Kuricheva O., Kurbatova J. et al., / Series Working Papers SSRN "Department of Economics Ca’ Foscari University of Venice". 2026.
The carbon balance of an ecosystem is the difference between Gross Primary Productivity (GPP) and Ecosystem Respiration (Reco) as expressed by Net Ecosystem Exchange (NEE). While remote sensing retrievals of GPP have reached maturity, Reco estimation remains underexplored and ultimately cast bias on NEE. Here we present an end-to-end multi-scale analysis of the mechanism of ...
Added: August 21, 2026
Ponomarenko A., / Series Computer Science "arxiv.org". 2025.
This paper addresses the challenge of merging hierarchical navigable small world (HNSW) graphs, a critical operation for distributed systems, incremental indexing, and database compaction. We propose three algorithms for this task: Naive Graph Merge (NGM), Intra Graph Traversal Merge (IGTM), and Cross Graph Traversal Merge (CGTM). These algorithms differ in their approach to vertex selection ...
Added: July 30, 2026
Piontkovski D., / Series arXiv "math". 2026.
A noncommutative projective variety is defined, following Artin and Zhang, by a graded coherent algebra 𝐴. The category of coherent sheaves is then the quotient qgr(𝐴) of the category of finitely presented graded modules by the subcategory of torsion modules. We consider the categorical and polynomial entropies of the Serre twist, that is, of the ...
Added: June 23, 2026
Piontkovski D., / Series arXiv "math". 2025.
If a symmetric multilinear algebra is weakly nil, then it is Engel. This result may be regarded as an infinite-dimensional analogue of the well-known Jacobian theorem, which states that if a polynomial mapping has a polynomial inverse, then its Jacobian matrix is invertible. This refines a theorem of Gerstenhaber and partially answers a question posed ...
Added: June 23, 2026
Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.
A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...
Added: May 19, 2026
Derkacheva A., Sakirkina M., Kraev G. et al., /. 2026.
Comprehensive data on natural hazards and their consequences are crucial for effective for risk assessment, adaptation planning, and emergency response. However, many countries face challenges with fragmented, inconsistent, and inaccessible data, particularly regarding local-scale events. To address this data gap in Russia, we developed an end-to-end processing pipeline that scrapes news from various online sources, ...
Added: April 28, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Gabdullin N., Androsov I., / Series Computer Science "arxiv.org". 2026.
Label prediction in neural networks (NNs) has O(n) complexity proportional to the number of classes. This holds true for classification using fully connected layers and cosine similarity with some set of class prototypes. In this paper we show that if NN latent space (LS) geometry is known and possesses specific properties, label prediction complexity can ...
Added: April 2, 2026
Sorokin K., Beketov M., Онучин А. et al., / arxiv.org. Серия cs.SI "Social and Information Networks ". 2025.
Community detection in complex networks is a fundamental problem, open to new approaches in various scientific settings. We introduce a novel community detection method, based on Ricci flow on graphs. Our technique iteratively updates edge weights (their metric lengths) according to their (combinatorial) Foster version of Ricci curvature computed from effective resistance distance between the ...
Added: January 15, 2026
Petrovanov I., Sergeev A., / Series Computer Science "arxiv.org". 2025. No. 2512.18332.
Transport coding reduces message delay in packet-switched networks by introducing controlled redundancy at the transport layer: original packets are encoded into coded packets, and the message is reconstructed after the first successful deliveries, effectively shifting latency from the maximum packet delay to the -th order statistic. We present a concise, reproducible discrete-event implementation of transport coding in OMNeT++, including ...
Added: December 24, 2025
Hessian-based lightweight neural network for brain vessel segmentation on a minimal training dataset
Меньшиков И. А., Бернадотт А. К., Elvimov N. S., / Series arXie "Statistical mechanics". 2025.
Accurate segmentation of blood vessels in brain magnetic resonance angiography (MRA) is essential for successful surgical procedures, such as aneurysm repair or bypass surgery. Currently, annotation is primarily performed through manual segmentation or classical methods, such as the Frangi filter, which often lack sufficient accuracy. Neural networks have emerged as powerful tools for medical image ...
Added: December 1, 2025
Zykov S. V., Shumsky L., Tykushin A. et al., , in: Procedia Computer Science, Vol. 126. Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 22nd International Conference, KES-2018, Belgrade, SerbiaVol. 126: Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 22nd International Conference, KES-2018, Belgrade, Serbia.: Amsterdam: Elsevier, 2018. P. 1771–1778.
This paper discusses experimental verification results of the tools for automatic determining optimal configuration of a virtual machine (VM) implemented based on previously developed models and methods (including the conditions of changing loads).
For information process models, machine learning algorithms with reinforcement are applied. These models are constructed automatically in typed π-calculus taking into account the ...
Added: October 6, 2018
Zykov S. V., Shumsky L. D., Tormasov A. G., , in: Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 21st International Conference, KES-20176-8 September 2017, Marseille, FranceVol. 112.: Elsevier, 2017. P. 1721–1729.
The present paper proposes an analysis of the experimental verification results of the means of
automatic determining of the optimal configuration of a virtual machine (VM) implemented based on
previously developed models and methods of automation for virtual machine configurations (including
in the conditions of changing loads).
For information process analytical models, machine learning algorithms with reinforcements
are applied. All ...
Added: March 20, 2018
Korolev D., Gorokhova-Alekseyeva A., , in: 2016 IEEE Conference on Quality Management, Transport and Information Security, Information Technologies (IT&MQ&IS). Proceedings.: М.: Фонд «Качество», 2016. P. 139–143.
Video broadcasts on the Internet in recent years have become commonplace and increasingly find their audience, supported by popular video services and social networks. But there are tasks, that require content delivery network (CDN), which lead to extra expences, and moreover, does not give sufficient flexibility and limits personalization of the broadcasts. This paper presents ...
Added: March 5, 2017
Korolev D., Gorokhova-Alekseyeva A., , in: Proceedings of the 2016 IEEE Conference on Quality Management, Transport and Information Security, Information Technologies (IT&MQ&IS-2016).: St. Petersburg: IEEE, 2016. P. 99–102.
Video broadcasts on the Internet have become a commonplace and increasingly find their audience, supported by popular video services and social networks. But there are tasks, that require content delivery network (CDN), which lead to extra expences, and moreover, does not give sufficient flexibility and limits personalization of the broadcasts. This paper presents the principles ...
Added: February 26, 2017
Zykov S. V., Shumsky L., , in: Procedia Computer Science. Knowledge-Based and Intelligent Information & Engineering Systems: Proceedings of the 20th International Conference KES-2016Vol. 96.: Amsterdam: Elsevier, 2016. P. 1041–1048.
The paper discusses application of the algorithm based information processes modeling and Q-machine learning to the task of virtual machines auto configuration. Usage of virtual machines is one the most common solution nowadays for almost every companies. Although using of virtual machines simplifies settings of hardware landscape and allows physical servers decentralization they may cause ...
Added: September 30, 2016
Azarov V., Fomin S. S., Компетентность 2015 № 9-10 С. 13–17
Problems of improvement of quality of training of specialists in the field of ICT are considered. Need of expansion of practice at development of technical disciplines locates. The factors influencing quality of training of specialists are considered. The level of development of means of ICT necessary for application of means of virtualization in systems of ...
Added: March 15, 2016
Silakov D., Системный администратор 2016 № 1-2 С. 16–19
Linux – популярная ОС на серверах и на рынке хостинг-провайдеров, однако нередки ситуации, когда контейнерная виртуализация не работает и необходимы более «тяжеловесные» подходы. Понимают это и разработчики Virtuozzo, и контейнерной виртуализацией возможности их продуктов не ограничиваются. ...
Added: March 3, 2016
Azarov V., Fomin S. S., Качество и жизнь 2015 № 4 С. 79–83
Aspects of the use of virtual environments for the training of specialists in the field of Information-Communication Technology (ICT) are reviewed. The need to expand practical work when studying technical disciplines is justified. The definition of a virtual environment together with the content and types of virtual environment is developed. The architecture of virtual practice, ...
Added: February 9, 2016