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SciDB - новая СУБД для больших объемов научных данных
Суперкомпьютеры. 2011. № 5. С. 24–27.
Velikhov P.
Keywords: СУБД
Teregulov T., Loubenets E. R., / Series Quantum Physics "arXiv". 2026. No. 2609.31472.
We develop a new three-party quantum secret-sharing (QSS) protocol based on a three-qubit W state. This protocol encodes the secret-sequence bits using X gates and employs randomly selected Hadamard operations and measurement bases to generate information and security-test rounds. We evaluate the efficiency of the proposed protocol and analyze its security against an internal adversary ...
Added: September 28, 2026
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
Rodriges Zalipynis R. A., St. Petersburg: Naukoemkie Technologii, 2023.
Experts estimate that location (spatial) components are part of about 80% of all data in the world. Spatial Data are crucial for Urban, Forest, and Water Management, Rapid Response to Emergencies, Air Quality Control, Food Security, Environmental Monitoring, and myriads of other practical tasks.
The Course Syllabus (Curriculum) proposes to acquire fundamental knowledge and skills in ...
Added: January 19, 2024
Krayushkin O., Смирнов М., Чернобай Ю., В кн.: 1st conference on Software Engineering and Information Management (SEIM-2016).: СПб.: [б.и.], 2016.
в работе были выявлены основные особенности организации сборки, хранения и предобработки датасета для формирования обучающей выборки multi-label классификатора текстов на естественном русском языке ...
Added: November 4, 2021
Kuznetsov S. D., Открытые системы. СУБД 2013 № 2 С. 48–51
The issues of Big Data begin to touch upon transactional systems despite the fact that they contain orders of magnitude less data than some others do. Yet, today they process vast amount of information and transactions requiring approaches that ensure robust scalability. Let’s consider the types of scalability suitable for transactional domain, the issues specific ...
Added: January 30, 2018
Вендин А. С., В кн.: Интеллектуальный и научный потенциал XXI века: сборник статей Международной научно-практической конференции: в 4 частях. 2017Ч. 3.: Уфа: Общество с ограниченной ответственностью "ОМЕГА САЙНС", 2017. С. 13–16.
In this paper, we consider a solution that helps increase the search speed and data fetching in relational databases such as Oracle and MySQL. This solution is called an index. We consider types of indices, which are unique only for specific DBMS, and indexes, which are used in almost all databases. Created by test database ...
Added: December 12, 2017
Вендин А. С., В кн.: Инновационные технологии научного развития: сборник статей международной научно-практической конференции: в 5 частях. 2017.: Уфа: Общество с ограниченной ответственностью "Аэтерна", 2017. С. 40–42.
When working with relational databases, the main time is loading, searching, update and unload data. When the amount of data is increased, the time to perform these operations is significantly increased, since in fact, all available records, and this reduces the performance and processing speed of the data. One possible way to increase productivity and ...
Added: December 12, 2017
Вендин А. С., В кн.: Инновационные технологии научного развития: сборник статей международной научно-практической конференции: в 5 частях. 2017.: Уфа: Общество с ограниченной ответственностью "Аэтерна", 2017. С. 42–45.
In this paper, we consider a solution that helps increase the speed of searching and retrieving data in relational DBMSs, such as Oracle and MySQL. This solution is called an index. We consider the types of indexes that are unique only for a particular DBMS, and indexes that are used in almost all databases. A ...
Added: December 12, 2017
Вендин А. С., Успехи современной науки 2017 Т. 6 № 3 С. 38–41
In this work we consider a solution that helps to increase the speed of search and retrieval of data in relational database management systems, such as ORACLE and MySQL.
This solution is called the index. We consider the types of indexes that are unique only for a particular database and indexes that are used in all ...
Added: December 11, 2017
Lyadova L. N., Фролова Н. В., Zamyatina E. et al., Пермь: Пермский государственный национальный исследовательский университет, 2007.
Added: December 3, 2016