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1st International Workshop on Information, Computation, and control systems for Distributed Environments, ICCS-DE 2019

作者： Bychkov, I.V. Oparin, G.A. Bogdanova, V.G. Pashinin, A.A. Matrosov Institute for System Dynamics and Control Theory SB RAS Lermontov St. 134 Irkutsk664033 Russia

The complexity of exhaustive problems with the properties of large-scale, openness, unpredictable dynamics, and component mobility determines the relevance of developing microservice-oriented software for their solving in a hybrid computational environment. We propose an approach for adapting to this environment both the existing software and new ones developed using new automated technology for creating an applied microservice package and organizing control of computations in it. The distributed computational model is represented by a set of small, loosely coupled, replaceable, interacting with the use of lightweight communication mechanisms autonomous microservices that implement the functions of the program package modules. The decentralized management of the microservices interaction is carried out by a self-organizing multi-agent system, agents of which are delegated the rights to launch microservices. The paper discusses the models, methods, and software platform that form the basis of the proposed technology. We demonstrate the application of the applied microservice package, based on this technology, for solving the problems of qualitative analysis of binary dynamic system using the author's Boolean constraints method. Copyright © 2019 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Multi agent systems

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Framework for preparing subject data in testing modules of scientific applications 1

Framework for preparing subject data in testing modules of s...

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1st International Workshop on Information, Computation, and control systems for Distributed Environments, ICCS-DE 2019

作者： Fereferov, E.S. Feoktistov, A.G. Bychkov, I.V. Matrosov Institute for System Dynamics and Control Theory of SB RAS Lermontov St. 134 Irkutsk664033 Russia

The paper addresses the relevant problem of data preparation for testing modules of scientific applications. Such testing requires the multiple executions of modules with different parameters for various scenarios of solving problems in applications. Often, data sources for parameters used for problem-solving are subject data (experimental results, reports, statistical forms and other information resources) created earlier as a result of functioning various objects of a subject domain. Usually, such data are heterogeneous and weakly structured. The developer of scientific applications has to make additional efforts in extracting, cleaning, integrating, and formatting data in order to achieve the correctness and efficiency of their use in applications. The aim of the study is the development of a framework for automating the description of semi-structured data and their transformation into target structures used by scientific applications. We proposed a conceptual model that allows us to represent knowledge about the structure of the source data, determine their relations with the target structures and set the rules for data transformation. Additionally, we developed a framework prototype. It is integrated into the technological scheme of continuous integration for modules of scientific applications (distributed applied software packages) that are developed with the help of Orlando Tools. The effectiveness of this prototype functioning is confirmed by the results of experimental analysis. Copyright © 2019 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Application programs

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On the Differential Realization of a Second-Order Bilinear system in a Hilbert Space

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Journal of Applied and Industrial Mathematics 2019年第2期13卷 261-269页

作者： Lakeyev, A.V. Linke, Yu. E. Rusanov, V.A. Matrosov Institute for System Dynamics and Control Theory ul. Lermontova 134 Irkutsk664033 Russia Irkutsk National Research Technical University ul. Lermontova 83 Irkutsk664074 Russia

We study the necessary and sufficient conditions for the existence of a nonlinear differential realization of a continuous infinite-dimensional behaviorist system in the class of nonstationary second-order bilinear ordinary differential (in particular, hyperbolic) equations in a separable Hilbert space. The obtained conditions rely upon the tensor products of Hilbert spaces. In passing, we analytically justify some topological-metrical continuity conditions for the projectivization of the Rayleigh—Ritz operator with the calculation of the fundamental group of its image. © 2019, Pleiades Publishing, Ltd.

关键词： Hilbert spaces

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A Computational Comparison of Parallel and Distributed K-median Clustering Algorithms on Large-Scale Image Data 18th

A Computational Comparison of Parallel and Distributed K-med...

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18th International Conference on Mathematical Optimization theory and Operations Research, MOTOR 2019

作者： Ushakov, Anton V. Vasilyev, Igor Matrosov Institute for System Dynamics and Control Theory of SB RAS Lermontov str. 134 Irkutsk664033 Russia

ISBN: (纸本)9783030333935

Most commonly used clustering algorithms are those aimed at solving the well-known k-median problem. Their main advantage is that they are simple to implement and use, and they are flexible in choosing dissimilarity measures (not necessarily metrics). K-median algorithms are also known to be more robust to noise and outliers in comparison with k-means algorithms. In spite of that, they have been of limited use for large-scale clustering problems due to their high computational and space complexity. This work aims at computational comparison of k-median clustering algorithms in a specific large-scale setting—clustering large image collections. We implement distributed versions of the most common k-median clustering algorithms and compare them with our parallel heuristic for solving large-scale k-median problem instances. We analyze clustering results with respect to external evaluation measures and run time. © 2019, Springer Nature Switzerland AG.

关键词： K-means clustering

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QCD phase diagram at NICA energies: K+/π+ horn effect and light clusters in THESEUS

Acta Physica Polonica B, Proceedings Supplement

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Acta Physica Polonica B, Proceedings Supplement 2021年第3期14卷 486-489页

作者： Blaschke, D. Friesen, A.V. Ivanov, Yu.B. Kalinovsky, Yu.L. Kozhevnikova, M. Liebing, S. Radzhabov, A. Röpke, G. JINR Dubna Dubna141980 Russia Moscow115409 Russia University of Wroclaw Wroclaw50-204 Poland Matrosov Institute System Dynamics and Control Theory Irkutsk664003 Russia Irkutsk State University Irkutsk664003 Russia University of Rostock Rostock18051 Germany

We discuss recent progress in the development of the three-fluid hydrodynamics-based program THESEUS towards an event generator suitable for applications to heavy-ion collisions at the intermediate energies of the planned NICA and FAIR experiments. We follow the strategy that modifications of particle distributions at the freeze-out surface in the QCD phase diagram may be mapped directly to the observable ones within a sudden freeze-out scheme. We report first results of these investigations for the production of light clusters (deuterons and tritons) which can be compared to experimental data from the HADES and the NA49 experiments and for the interpretation of the "horn" effect observed in the collision energy dependence of the K+/π+ ratio. Medium effects on light cluster production in the QCD phase diagram are negligible at the highest NICA energies but shall play a dominant role at the lowest energies. A sharp "horn"-type signal in the K+/π+ ratio can be obtained when the onset of Bose condensation modelled by a pion chemical potential results in an enhancement of pions at low momenta (which is seen at the LHC energies) and would occur already in the NICA energy range. © 2021 Jagellonian University. All rights reserved.

关键词： Phase diagrams

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Orlando tools: Energy research application development through convergence of grid and cloud computing 4th

Orlando tools: Energy research application development throu...

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4th Russian Supercomputing Days Conference, RuSCDays 2018

作者： Feoktistov, Alexander Gorsky, Sergei Sidorov, Ivan Kostromin, Roman Edelev, Alexei Massel, Lyudmila Matrosov Institute for System Dynamics and Control Theory of SB RAS Irkutsk Russia Melentiev Energy Systems Institute of SB RAS Irkutsk Russia

ISBN: (纸本)9783030058067

The paper addresses the relevant problem related to the development of scientific applications (applied software packages) to solve large-scale problems in heterogeneous distributed computing environments that can include various infrastructures (clusters, Grid systems, clouds) and provide their integrated use. We propose a new approach to the development of applications for such environments. It is based on the integration of conceptual and modular programming. The application development is implemented with a special framework named Orlando Tools. In comparison to the known tools, used for the development and execution of distributed applications in the current practice, Orlando Tools provides executing application jobs in the integrated environment of virtual machines that include both the dedicated and non-dedicated resources. The distributed computing efficiency is improved through the multi-agent management. Experiments of solving the large-scale practical problems of energy security research show the effectiveness of the developed application for solving the aforementioned problem in the environment that supports the hybrid computational model including Grid and cloud computing. © 2019, Springer Nature Switzerland AG.

关键词： Energy security

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Mott dissociation and kaon to pion ratio in the EPNJL model

arXiv

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arXiv 2021年

作者： Blaschke, D. Friesen, Alexandra V. Yu, L. Kalinovsky Radzhabov, A.E. Joint Institute for Nuclear Research Dubna141980 Russia Institute for Theoretical Physics University of Wroclaw Wroclaw50-204 Poland Moscow115409 Russia Dubna State University Dubna141982 Russia Matrosov Institute for System Dynamics and Control Theory Irkutsk664033 Russia

The behaviour of pseudoscalar mesons within the SU(3)PNJL-like models is considered for finite T and µB. We compare the pole approximation (Breit-Wigner) with the Beth-Uhlenbeck approach. We evaluate the K/π ratios along the phase transition line in the T-µB plane with constant and T/µB-dependent pion and strange quark chemical potentials. Using the model, we can show that the splitting of kaon and anti-kaon masses appears as a result of introduction of density and this explains the difference in the K+/π+ ratio and K−/π− ratio at low √sNN and their tendency to the same value at high √sNN. A sharp "horn" effect in the K+/π+ ratio is explained by the enhanced pion production which can be described by occurrence of a nonequilibrium pion chemical potential of the order of the pion mass. We elucidate that the horn effect is not related to the existence of a critical endpoint in the QCD phase diagram. © 2021, CC BY.

关键词： Hadrons

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Representation of MDA Transformation with Logical Objects

Representation of MDA Transformation with Logical Objects

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2019 International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2019

作者： Cherkashin, Evgeny Shigarov, Alexey Paramonov, Viacheslav Matrosov Institute for System Dynamics and Control Theory of SB RAS Irkutsk Scientific Center of SB RAS Irkutsk664033 Russia

ISBN: (纸本)9781728144016

The problem of software modeling having various models as sources and its transformation based on logical inference is considered. Source models are converted into graphs of RDF and then processed with knowledge based system organized in a network of objects. Various notation can be used to represent models, such as UML, SysML, CMMN, BPMN2.0, as well as RDF graphs and analyzed source code, having implemented a corresponding converter. The objects are represented in the LogTalk programming language. Objects query graphs and other objects implementing a scenario of a software system synthesis within Model Driven Architecture paradigm. Usage of such kind of transformation approach allows us to develop software system carcasses on the level of abstract models, involve various sources of model data in the transformation, define and structuring conversion knowledge as objects. An example of a dataflow environment synthesis encapsulating Mothur library for new generation sequencing is presented. © 2019 IEEE.

关键词： Knowledge based systems

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Traffic flow prediction for vehicle emission calculation based on graph convolutional networks 1

Traffic flow prediction for vehicle emission calculation bas...

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1st International Workshop on Advanced Information and Computation Technologies and systems, AICTS 2020

作者： Jiang, Peng Bychkov, Igor Liu, Jun Li, Tianjiao Hmelnov, Alexei Department of Science and Technology Cooperation Westlake University No.18 Shilong Mountain Street Xihu District Hangzhou China "the Belt and Road" Institute for Information Technology Hangzhou Dianzi University No.115 Wenyi Road Xihu District Hangzhou China Hangzhou Dianzi University No.1158 Number Two Street Jianggan District Hangzhou China Matrosov Institute for System Dynamics and Control Theory Siberian Branch Russian Academy of Sciences 134 Lermontov st. Irkutsk Russia

Monitoring the distribution of vehicle exhaust emissions within the city is a very challenging problem since it is affected by many complex factors, such as spatial-temporal correlation and the other environment conditions. In addition, the technology of using sensors to directly monitor vehicle exhaust emissions is still in the initial stage, and it is hard to implement direct monitoring in a large area. Thus, we use the existing environmental theory to measure the distribution of vehicle exhaust emissions in cities by traffic volume. In this paper, the problem we need to solve is how to use the data of sparse monitoring stations and inherent traffic network to infer the spatial-temporal distribution of traffic volume. In order to solve this problem, we propose a graph convolutional network model to extract the characteristics of traffic data and other features. We have done a lot of experiments on real traffic data sets. The experimental results show that the proposed method performs better than the existing methods. © 2021 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Flow graphs

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Creation of WPS services: Case study of forest dynamics modeling 2

Creation of WPS services: Case study of forest dynamics mode...

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2nd Scientific-Practical Workshop Information Technologies: Algorithms, Models, systems, ITAMS 2019

作者： Popova, Anastasia K. Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Lermontov st. 134 Irkutsk Russia

The article is devoted to the creation of WPS services for the geoportal using the case study of an online service for modeling the dynamics of forest resources. The resulting service works on the basis of a mathematical model of the dynamics of forest areas of a subregional level according to age classes in time and space. Verification of the selected mathematical model was carried out previously, for which the data of real observations and calculated values were compared. The service displays the simulation results on the geoportal in the form of a thematic map of the region. The map legend corresponds to the calculation results: dark shades indicate an increase in forest areas of the selected territory, light shades indicate their decrease over the calculation period. In conclusion, the directions of further development of the created online service for modeling the dynamics of forest resources are given. Copyright © 2019 for this paper by its authors.

关键词： dynamics

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