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Социальные медиа: о чем и кому пишут их пользователи? Некоторые подходы к анализу данных
Прикладная эконометрика. 2017. № 3. С. 74–99.
Study of users and their segmentation, based on users’ preferred topics of discussion and their networking, is the unique opportunity offered by social networks. Variety of approaches to social media analysis based on social network analysis and text mining is summarized in the paper. It is extended by concentration index application and visualizing of the results of social network analysis.
The study of a model set exhibits that: 1) users can be successfully segmented on the base of their most mentioned topics, which is useful for a product placement and other commercial purposes; 2) distribution of number of posts by authors is highly uneven regardless to the topic of discussion; 3) users connected on-line typically live in the same geographical area; 4) users’ number of posts and centrality indices are correlated.
Research target:
Sociology (including Demography and Anthropology
Mathematics
Philology and Linguistics
Language:
Russian
Vyugin I. V., Sashadhar D., Algebra and Number Theory 2026 P. 1–10
We study the K-Fibonacci sequence Fp modulo prime p. Cardinalities of sets |Fp+Fp| and |Fp⋅Fp| are estimated. We present the method of estimating doubling constant of some m-dimensional recurrent sets in Fp. ...
Added: October 1, 2026
Bernardin C., João P. M., Gonçalves P., PROBABILITY AND MATHEMATICAL PHYSICS 2026 P. 59–59
We investigate a boundary-driven Ginzburg-Landau dynamics with long-range interactions. In the hydrodynamic limit, the macroscopic evolution is governed by a fractional heat equation with Dirichlet boundary conditions, while the corresponding stationary profile is characterized by a fractional Laplace equation. We establish a dynamical large deviations principle for the empirical measure and derive the associated stationary ...
Added: October 1, 2026
Kuksin S., Dynamical Systems 2026
We study the mixing properties of discrete-time and continuous-time dissipative dynamical systems driven by bounded mixing random forces. The continuous-time systems are
reduced to discrete-time random dynamical systems generated by time-one maps, so that
the main analysis is carried out in the discrete setting. We introduce a class of mixing random forcings whose regular conditional distributions with ...
Added: October 1, 2026
Kazun A. D., Полития: Анализ. Хроника. Прогноз 2026 № 3 С. 80–98
The article analyzes media skepticism and media cynicism as two forms of critical attitudes toward news. The empirical basis of the study is a nationwide population survey (N = 6,007) conducted in late 2023 and early 2024. The analysis shows that both media skepticism and media cynicism are pronounced in Russian society: while a substantial ...
Added: October 1, 2026
Kuksin S., Shirikyan A., Journal of Dynamics and Differential Equations 2026 P. 1098–1100
The paper deals with the problem of large-time behaviour of trajectories for discrete-time dynamical systems driven by a random noise. Assuming that the phase space is finite-dimensional and compact, and the noise is a Markov process with a transition probability satisfying some regularity hypotheses, we prove that all the trajectories converge to a unique measure ...
Added: October 1, 2026
Vakhrukova K., Петербургская социология сегодня 2025 № 30 С. 28–51
The digital age has radically changed the landscape of the humanities, introducing new methodologies, tools, and challenges. This has also been reflected in the field of oral history. This transformation has been particularly evident in the UK, where long-standing oral history archives and recent digitization projects have come together to redefine how scholars collect, preserve, ...
Added: October 1, 2026
Potanin B., Dolgikh S., Statistics and Probability Letters 2026 Article 110984
We derive bounds on the gradient and Hessian of the log-CDF, ln F(x), of the multivariate normal distribution. These bounds scale linearly and quadratically in ‖x‖ , respectively, with constants depending only on the covariance matrix. We demonstrate the usefulness of these bounds by proving asymptotic normality of the maximum-likelihood estimator of the multivariate probit ...
Added: October 1, 2026
Vinogradov A., Rodionov O., Traveaux et memoires 2026 Vol. 30 No. 2 P. 1075–1089
This article examines the manuscript tradition of Kallistos Angelikoudes’ Hesychastic consolation, a fluid and complex corpus of thirty Logoi preserved primarily in Vat. gr. 736. The authors survey all known witnesses—including the autograph Barb. gr. 420, the Lond. Arund. 520, and several later copies—and analyze their textual relationships, variant readings, and codicological features. They demonstrate ...
Added: October 1, 2026
A. V. Pereskokov, Journal of Mathematical Sciences 2026 Vol. 302 No. 4 P. 531–545
We consider the Zeeman effect problem for the hydrogen atom in a magnetic field using
irreducible representations of the Karasev–Novikova algebra with quadratic commutation
relations. We find the asymptotics of a series of eigenvalues and the corresponding
asymptotic eigenfunctions near the upper boundaries of spectral clusters. ...
Added: October 1, 2026
Yakovlev K., Puchkin N., Journal of Complexity 2026 Vol. 97
We present a theory for simultaneous approximation of the score function and its derivatives, enabling the handling of data distributions with low-dimensional structure and unbounded support. Our approximation error bounds match those in the literature while relying on assumptions that relax the usual bounded support requirement. Crucially, our bounds are free from the curse of ...
Added: September 30, 2026
Zlotnik A., Mathematical notes 2026 Vol. 120 No. 6 P. 1005–1009
Numerical methods for solving systems of gas dynamic equations are the subject of a vast literature. A special family of spatially symmetric conservative difference methods based on preliminary kinetic, or quasi-gasdynamic (QGD), regularization of these equations was constructed and successfully tested. A pressing issue is the construction of numerical methods that are not only conservative ...
Added: September 30, 2026
Beldiev I., Тимашёв Д. А., Алгебра и анализ 2026 Т. 38 № 5 С. 1–10
An algebraic variety X is called a homogeneous space if there exists a transitive regular action of an algebraic group on X. We prove inequalities between the dimension of a homogeneous space of a linear algebraic group and its Picard number. ...
Added: September 30, 2026
Katchanov Y. L., Социологическое обозрение 2026 Т. 25 № 3 С. 36–61
В статье предлагается теоретическая рамка анализа научной элиты, исходящая из понимания производства знания как динамической структуры, формируемой внутренними противоречиями. Научная элита рассматривается не как совокупность выдающихся исследователей, а как структурный эффект производства знания — позиция в пространстве науки, концентрирующая максимальный объем научного капитала и задающая смысловой горизонт для всех агентов. Пространство науки трактуется как многомерное ...
Added: September 30, 2026
Khestanov R., Социологическое обозрение 2026 Т. 25 № 3 С. 12–35
The article proposes a syntagmatic analysis of three historically constituted regimes for working with the future: linear determination, statistical branching, and loop reconfiguration. A syntagm is understood as an event-operation that exists only in its performance and simultaneously binds material, semiotic, and pragmatic registers. The analysis proceeds not as an intellectual history but as an ...
Added: September 30, 2026
Громенко Е. С., Krongauz M., Антропологический форум 2026 № 70 С. 163–183
The paper describes the construction litso takoy-to natsionalnosti ‘a person of such-and-such an ethnicity’ in Russian with its semantic and pragmatic characteristics. The purpose of the study is to trace the appearance of the construction and analyse how it is used and how it is perceived. Three expressions representing this construction are considered in more ...
Added: September 30, 2026
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
Верняев И. И., Уральский исторический вестник 2026 Т. 92 № 3 С. 24–33
This article explores the factors driving the regional differentiation of judicial activity in the post-reform Russian Empire. The historiography is currently divided between two poles: the paradigm of legal dualism, which postulates the alienation of rural and non-Russian (inorodtsy) populations from the Crown courts, and the opposing thesis of mass grassroots legalism, large- ly verified ...
Added: September 26, 2026
Ustyuzhanin V., Zinkina J. V., Korotayev A., / Series "SocArXiv". 2026.
“Leaderlessness” is widely held to be a defining feature of contemporary mass mobilization, yet the claim rests on a handful of recent cases. We offer the first systematic cross-national analysis of this phenomenon from 1791 to 2019. We show that the absence of leadership is real but older and more modest than claimed: the share ...
Added: August 29, 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
Kravtsova M., Musaev A. U., Welzel C., / Series "SSRN Working Paper Series". 2026.
Elaborating on Welzel et al.'s "Cool Water Theory," our study zooms into the more limited (albeit still varied) framework conditions of Russia's huge territory. Within Russia's confines, we examine how the combination of moderately cool seasons with steady rain (i.e., Cool Water) affects sub-national areas' contemporary societal progress in two modernization indicators: material prosperity in ...
Added: June 3, 2026
Vorchik A., / SSRN. Серия Social Science Research Network "Social Science Research Network". 2026.
This work is devoted to a theoretical explanation of the Easterlin paradox, according to which long-term economic growth does not make average level of people's happiness increasing. By happiness, we mean the intensity of emotions people experience while comparing their new income with its expected value, or the target income with its original value. In the first case, ...
Added: May 31, 2026