Temat: Multi-agent systems - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nonlinear convergence algorithm: structural properties with doubly stochastic quadratic operators for multi-agent systems
Autorzy:: Abdulghafor, R.
Turaev, S.
Zeki, A.
Abubaker, A.
Powiązania:: https://bibliotekanauki.pl/articles/91876.pdf
Data publikacji:: 2018
Wydawca:: Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:: doubly stochastic quadratic operators
nonlinear convergence algorithm
consensus problem
multi-agent systems
kwadratowe operatory podwójnie stochastyczne
problem konsensusu
systemy wieloagentowe
Opis:: This paper proposes nonlinear operator of extreme doubly stochastic quadratic operator (EDSQO) for convergence algorithm aimed at solving consensus problem (CP) of discrete-time for multi-agent systems (MAS) on n-dimensional simplex. The first part undertakes systematic review of consensus problems. Convergence was generated via extreme doubly stochastic quadratic operators (EDSQOs) in the other part. However, this work was able to formulate convergence algorithms from doubly stochastic matrices, majorization theory, graph theory and stochastic analysis. We develop two algorithms: 1) the nonlinear algorithm of extreme doubly stochastic quadratic operator (NLAEDSQO) to generate all the convergent EDSQOs and 2) the nonlinear convergence algorithm (NLCA) of EDSQOs to investigate the optimal consensus for MAS. Experimental evaluation on convergent of EDSQOs yielded an optimal consensus for MAS. Comparative analysis with the convergence of EDSQOs and DeGroot model were carried out. The comparison was based on the complexity of operators, number of iterations to converge and the time required for convergences. This research proposed algorithm on convergence which is faster than the DeGroot linear model.
Źródło:: Journal of Artificial Intelligence and Soft Computing Research; 2018, 8, 1; 49-61
2083-2567
2449-6499
Pojawia się w:: Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evacuation by leader-follower model with bounded confidence and predictive mechanisms
Autorzy:: Almeida, Ricardo
Girejko, Ewa
Machado, Luis
Malinowska, Agnieszka B.
Martins, Natália
Powiązania:: https://bibliotekanauki.pl/articles/1845516.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: multi-agent systems
emergency
model predictive control
bounded confidence
Opis:: This paper studies an evacuation problem described by a leader-follower model with bounded confidence under predictive mechanisms. We design a control strategy in such a way that agents are guided by a leader, which follows the evacuation path. The proposed evacuation algorithm is based on Model Predictive Control (MPC) that uses the current and the past information of the system to predict future agents’ behaviors. It can be observed that, with MPC method, the leader-following consensus is obtained faster in comparison to the conventional optimal control technique. The effectiveness of the developed MPC evacuation algorithm with respect to different parameters and different time domains is illustrated by numerical examples.
Źródło:: Archives of Control Sciences; 2021, 31, 3; 629-644
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evacuation by leader-follower model with bounded confidence and predictive mechanisms
Autorzy:: Almeida, Ricardo
Girejko, Ewa
Machado, Luis
Malinowska, Agnieszka B.
Martins, Natália
Powiązania:: https://bibliotekanauki.pl/articles/1845527.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: multi-agent systems
emergency
model predictive control
bounded confidence
Opis:: This paper studies an evacuation problem described by a leader-follower model with bounded confidence under predictive mechanisms. We design a control strategy in such a way that agents are guided by a leader, which follows the evacuation path. The proposed evacuation algorithm is based on Model Predictive Control (MPC) that uses the current and the past information of the system to predict future agents’ behaviors. It can be observed that, with MPC method, the leader-following consensus is obtained faster in comparison to the conventional optimal control technique. The effectiveness of the developed MPC evacuation algorithm with respect to different parameters and different time domains is illustrated by numerical examples.
Źródło:: Archives of Control Sciences; 2021, 31, 3; 629-644
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Controllability of consensus heterogeneous multi-agent networks over continuous time scale
Autorzy:: Athira, V. S.
Muni, Vijayakumar S.
Rafeek, Kallu Vetty Muhammed
Reddy, Gudala Janardhana
Powiązania:: https://bibliotekanauki.pl/articles/31343938.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: multi-agent systems
controllability
heterogeneous
agent models
Opis:: The research, presented in this paper, concernes the controllability of a multi-agent network with a directed, unweighted, cooperative, and time-invariant communication topology. The network’s agents follow linear and heterogeneous dynamics, encompassing first-order, second-order, and third-order differential equations over continuous time. Two classes of neighbour-based linear distributed control protocols are considered: the first one utilises average feedback from relative velocities/relative accelerations, and the second one utilises feedback from absolute velocities/absolute accelerations. Under both protocols, the network’s agents achieve consensus in their states asymptotically. We observe that both of the considered dynamical rules exploit the random-walk normalised Laplacian matrix of the network’s graph. By categorising the agents of the network into leaders and followers, with leaders serving as exogenous control inputs, we analyse the controllability of followers within their state space through the influence of leaders. Specifically, matrix-rank conditions are established to evaluate the leader– follower controllability of the network under both control protocols. These matrix-rank conditions are further refined in terms of the system matrices’ eigenvalues and eigenvectors. The inference diagrams presented in this work provide deeper insights into how leader– follower interactions impact the network controllability. The efficacy of the theoretical findings is validated through numerical examples.
Źródło:: Control and Cybernetics; 2023, 52, 2; 199-245
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Off-line and dynamic production scheduling - a comparative case study
Autorzy:: Bożek, A.
Wysocki, M.
Powiązania:: https://bibliotekanauki.pl/articles/406687.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: flexible job shop
lot streaming
off-line scheduling
dynamic scheduling
tabu search
constraint programming
dispatching rule
Petri nets
multi-agent systems
Opis:: A comprehensive case study of manufacturing scheduling solutions development is given. It includes highly generalized scheduling problem as well as a few scheduling modes, methods and problem models. The considered problem combines flexible job shop structure, lot streaming with variable sublots, transport times, setup times, and machine calendars. Tabu search metaheuristic and constraint programming methods have been used for the off-line scheduling. Two dynamic scheduling methods have also been implemented, i.e., dispatching rules for the completely reactive scheduling and a multi-agent system for the predictivereactive scheduling. In these implementations three distinct models of the problem have been used, based on: graph representation, optimal constraint satisfaction, and Petri net formalism. Each of these solutions has been verified in computational experiments. The results are compared and some findings about advantages, disadvantages, and suggestions on using the solutions are formulated.
Źródło:: Management and Production Engineering Review; 2016, 7, 1; 21-32
2080-8208
2082-1344
Pojawia się w:: Management and Production Engineering Review
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Zarys koncepcji komputerowego wspomagania twórczości organizacyjnej
Framework of orgnizational creativity computer support
Autorzy:: Bratnicki, Mariusz
Olszak, Celina M.
Kisielnicki, Jerzy
Powiązania:: https://bibliotekanauki.pl/articles/432058.pdf
Data publikacji:: 2014
Wydawca:: Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:: organizational creativity computer support
Hevner’s design-science research guidelines
Business Intelligence
Competitive Intelligence
multi-agent systems
workgroup tools
Opis:: The main purpose of the paper is to provide the framework for organizational creativity computer support. Our considerations [Bratnicki, Kisielnicki, Olszak 2014] on the issue of organizational creativity have resulted to the integration of two research areas: organizational creativity (from the strategic perspective and dynamic capabilities) and ICT. Consequently, we have proposed the holistic concept of organizational creativity computer support. To create it, Hevner et al. [2004] design-science research guidelines were used.
Źródło:: Informatyka Ekonomiczna; 2014, 1(31); 36-46
1507-3858
Pojawia się w:: Informatyka Ekonomiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Asymptotic guarantee of success for multi-agent memetic systems
Autorzy:: Byrski, A.
Schaefer, R.
Smołka, M.
Cotta, C.
Powiązania:: https://bibliotekanauki.pl/articles/201942.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: computational multi-agent systems
asymptotic analysis
global optimization
parallel evolutionary algorithms
Markov chain modeling
Opis:: The paper introduces a stochastic model for a class of population-based global optimization meta-heuristics, that generalizes existing models in the following ways. First of all, an individual becomes an active software agent characterized by the constant genotype and the meme that may change during the optimization process. Second, the model embraces the asynchronous processing of agent’s actions. Third, we consider a vast variety of possible actions that include the conventional mixing operations (e.g. mutation, cloning, crossover) as well as migrations among demes and local optimization methods. Despite the fact that the model fits many popular algorithms and strategies (e.g. genetic algorithms with tournament selection) it is mainly devoted to study memetic algorithms. The model is composed of two parts: EMAS architecture (data structures and management strategies) allowing to define the space of states and the framework for stochastic agent actions and the stationary Markov chain described in terms of this architecture. The probability transition function has been obtained and the Markov kernels for sample actions have been computed. The obtained theoretical results are helpful for studying metaheuristics conforming to the EMAS architecture. The designed synchronization allows the safe, coarse-grained parallel implementation and its effective, sub-optimal scheduling in a distributed computer environment. The proved strong ergodicity of the finite state Markov chain results in the asymptotic stochastic guarantee of success, which in turn imposes the liveness of a studied metaheuristic. The Markov chain delivers the sampling measure at an arbitrary step of computations, which allows further asymptotic studies, e.g. on various kinds of the stochastic convergence.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 1; 257-278
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: A universal model of knowledge conflict resolving using consensus methods in multi-agent decision support systems
Autorzy:: Bytniewski, Andrzej
Hernes, Marcin
Matouk, Kamal
Powiązania:: https://bibliotekanauki.pl/articles/431992.pdf
Data publikacji:: 2013
Wydawca:: Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:: decision support systems
knowledge conflicts
multi-agent systems
consensus methods
Opis:: The article presents a proposition of a universal model of knowledge conflict resolving using consensus methods, which can be used in a multi-agent decision support system. Knowledge conflicts often appear, when individual agents generate different solutions of the same problem. It is very difficult for the user – decision-maker to make a good decision because the analysis of solutions generated by agents is very time-consuming and the decision must be made quickly. Moreover, selecting one of the decisions on the basis of the experience of the decision-maker is very risky, because he/she could choose the worst solution. Consensus methods, however, allow to agree, on the basis of the solutions generated by agents, one solution, which is a compromise. As a consequence, reducing the time and decreasing the risk level of the decision taking process, to enable the functioning of the enterprise in more flexible.
Źródło:: Informatyka Ekonomiczna; 2013, 4(30); 82-90
1507-3858
Pojawia się w:: Informatyka Ekonomiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Koncepcja wieloagentowego systemu wczesnego ostrzegania przed sytuacjami kryzysowymi w gospodarce
A conception of multi-agent early warning system for crisis in economy
Autorzy:: Bytniewski, Andrzej
Hernes, Marcin
Maleszka, Marcin
Nguyen, Ngoc Thanh
Sobieska-Karpińska, Jadwiga
Powiązania:: https://bibliotekanauki.pl/articles/593468.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Ekonomiczny w Katowicach
Tematy:: Prognozy gospodarcze
System wczesnego ostrzegania
Systemy wieloagentowe
Early warning systems
Economic forecasts
Multi-agent systems
Opis:: Funkcjonujące dotychczas systemy wczesnego ostrzegania przed sytuacjami kryzysowymi w gospodarce odnoszą się jedynie do konkretnych branż lub grup kilku branż w gospodarce i są skierowane przeważnie do wybranych grup użytkowników. Występowanie niekorzystnych zjawisk gospodarczych w całej przestrzeni gospodarczej wymaga jednak uniwersalnego podejścia do konstrukcji systemów wczesnego ostrzegania. W artykule opracowano koncepcję systemu obejmującego swoim zakresem zarówno użytkowników indywidualnych i przedsiębiorstwa, jak i całe gospodarki w ujęciu globalnym. System ten składa się z następujących modułów: konwersji istniejących i nowo tworzonych modeli systemów wczesnego ostrzegania, kolektywów człowiek-agent oraz integracji, oceny wiedzy i personalizacji. Funkcjonowanie tego typu systemu może wpłynąć na wzrost poziomu skuteczności prognoz ostrzegawczych oraz na wzrost poziomu efektywności decyzji umożliwiających podjęcie działań wyprzedzających, co w konsekwencji może ograniczać skutki kryzysów w gospodarce.
So far early warning systems for crises in the economy refer only to specific industries or groups of several industries in the economy and are directed mainly to selected groups of users. The occurrence of unfavorable economic phenomenon across the economic space, however, requires an universal approach to the construction of an early warning systems. Therefore, the concept of a system that includes both individual users and enterprises, as well as entire economies in a global perspective, have been developed in this paper. The system consists of the following modules: conversion of existing and newly created models of early warning systems, human-agent collectives and integration, knowledge assessment and personalization. The functioning of this type of system may affect the increase of the effectiveness of warning forecasts and the increase in the level of effectiveness of decisions allowing for taking pre-emptive actions, which in consequence may limit the effects of crises in the economy.
Źródło:: Studia Ekonomiczne; 2017, 342; 11-21
2083-8611
Pojawia się w:: Studia Ekonomiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Distributed event-triggered generalized Nash equilibrium seeking for aggregative games on unbalanced digraphs
Autorzy:: Cai, Xin
Nan, Xinyuan
Gao, Bingpeng
Powiązania:: https://bibliotekanauki.pl/articles/2175114.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: aggregative games
coupled constraints
generalized Nash equilibrium
multi-agent systems
Opis:: This paper addresses the problem of seeking generalized Nash equilibrium for constrained aggregative games with double-integrator agents who communicate with each other on an unbalanced directed graph. An auxiliary variable is introduced to balance the consensus terms in the designed algorithm by estimating the left eigenvector of the Laplacian matrix associated with the zero eigenvalue in a distributed manner. Moreover, an event-triggered broadcasting scheme is proposed to reduce communication loads in the network. It is shown that the proposed communication scheme is free of the Zeno behavior and the asymptotic convergence of the designed algorithm is obtained. Simulation results are demonstrated to validate the proposed methods.
Źródło:: Archives of Control Sciences; 2022, 32, 4; 783--800
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Distributed control systems integration and management with an ontology-based multi-agent system
Autorzy:: Choiński, D.
Senik, M.
Powiązania:: https://bibliotekanauki.pl/articles/201395.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: distributed control system
multi-agent system
software based integration systems
ontology
Petri nets
system wieloagentowy
ontologia
sieci Petriego
inteligentny system kontroli
Opis:: The purpose of this study is to create, analyze and reuse an ontology-based approach during implementation of a multi-agent system (MAS) capable of integrating different elements of a distributed control system (DCS). Ontology is considered as knowledge about a particular domain. It includes static description of the domain’s structure and properties, by means of which it is possible to define the domain’s dynamic states, transitions between those states and conditions of those transitions. Because of that, it is possible to analyze such ontology in terms of modal logic in predicate logic settings.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 5; 613-620
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Towards an Agent-Based Augmented Cloud
Autorzy:: Dębski, R.
Byrski, A.
Kisiel-Dorohinicki, M.
Powiązania:: https://bibliotekanauki.pl/articles/308495.pdf
Data publikacji:: 2012
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: Agent Platform as a Service
Augmented Cloud
cloud computing
multi-agent systems
Opis:: In the paper an agent-based framework deployed in hybrid cluster and volunteer computing environment is presented. It utilizes two concepts proposed by the authors: Augmented Cloud and Agent Platform as a Service (AgPaaS). Both concepts are discussed in the context of Cloud Computing as defined by NIST. The key idea of the presented solution is to span the cloud (i.e., computing infrastructure) beyond the data center borders by utilizing web browsers as computational workers. The feasibility of the approach was demonstrated by two prototypes: the first one was based on Java Applets and Adobe Flash, whereas the second one on Microsoft Silverlight. The prototypes were next used to perform simple experiments, mainly related to scalability issues. Selected results from the experiments are discussed in the final part of the paper.
Źródło:: Journal of Telecommunications and Information Technology; 2012, 1; 16-22
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Development of INFOCAST - information system for foundry industry
Autorzy:: Dobrowolski, G.
Marcjan, R.
Nawarecki, E.
Kluska-Nawarecka, S.
Dziaduś, J.
Wójcik, T.
Powiązania:: https://bibliotekanauki.pl/articles/1954639.pdf
Data publikacji:: 2003
Wydawca:: Politechnika Gdańska
Tematy:: multi-agent systems
expert systems
databases
foundry industry
diagnosis
Opis:: The article presents the current state of development of INFOCAST - an information decision system supporting technological problems of the foundry industry. Two aspects of the system are related: enrichment of its information and knowledge resources and changes in architecture, both oriented towards improvement of its applicability. The reported stage of development of INFOCAST is characterized by a close integration of its data and knowledge bases by means of the agent-based technology. Due to decentralization, the knowledge and information can be used not only in research and design activities, but also in the exploitation of technological processes.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 2; 283-289
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Agent-based data integration framework
Autorzy:: Faber, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/305369.pdf
Data publikacji:: 2014
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: data integration
multi-agent systems
Opis:: Combining data from diverse, heterogeneous sources while facilitating a unified access to it is an important (albeit difficult) task. There are various possibilities of performing it. In this publication, we propose and describe an agent-based framework dedicated to acquiring and processing distributed, heterogeneous data collected from diverse sources (e.g., the Internet, external software, relational, and document databases). Using this multi-agent-based approach in the aspects of the general architecture (the organization and management of the framework), we create a proof-of-concept implementation. The approach is presented using a sample scenario in which the system is used to search for personal and professional profiles of scientists.
Źródło:: Computer Science; 2014, 15 (4); 389-410
1508-2806
2300-7036
Pojawia się w:: Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Designing fuzzy rule-based controllers from data using particle swarm optimization
Projektowanie rozmytych regulatorów regułowych na bazie danych z wykorzystaniem tzw. optymalizacji rojowej
Autorzy:: Gorzałczany, M. B.
Głuszek, A.
Powiązania:: https://bibliotekanauki.pl/articles/153296.pdf
Data publikacji:: 2010
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: inteligencja obliczeniowa
regulatory rozmyte
systemy wieloagentowe
inteligencja rojowa
dane pomiarowe
computational intelligence
fuzzy controllers
multi-agent systems
swarm intelligence
measurement data
Opis:: The paper presents a hybrid combination of fuzzy rule-based systems and particle swarm optimization (PSO) approach - referred to as PSO fuzzy rule-based technique - for optimizing sets of fuzzy control rules synthesized from control data. The application of the proposed technique to a complex and non-linear problem of the control of backing up a truck to a loading dock is also presented in the paper.
Artykuł prezentuje hybrydowe połączenie rozmytych systemów regułowych z metodami tzw. optymalizacji rojowej w celu optymalizowania zestawów rozmytych reguł sterujących syntetyzowanych z danych opisujących procesy sterowania. Zatem, artykuł proponuje rozszerzenie tradycyjnego zestawu komponentów wykorzystywanych dotychczas w budowie systemów tzw. inteligencji obliczeniowej obejmującego sztuczne sieci neuronowe, systemy rozmyte, algorytmy ewolucyjne (przede wszystkim, algorytmy genetyczne) czy też tzw. zbiory przybliżone o nowe narzędzie przeszukiwania rozważanych przestrzeni rozwiązań. Najpierw sformułowany został problem budowy regulatorów, których funkcjonowanie opisywane jest przy pomocy zestawów reguł rozmytych, na bazie danych opisujących procesy sterowania. Następnie przedstawiono zarys procesu syntezy rozmytych reguł sterowania z wykorzystaniem metod tzw. optymalizacji rojowej. Z kolei, zaprezentowano zastosowanie proponowanego podejścia do złożonego i nieliniowego problemu sterowania cofaniem ciężarówki do rampy załadowczej. Przedstawiono uzyskaną bazę reguł regulatora rozmytego, kształty funkcji przynależności zbiorów rozmytych występujących w regułach sterowania oraz wybrane przykłady trajektorii ruchu ciężarówki ze sterowaniem rozmytym.
Źródło:: Pomiary Automatyka Kontrola; 2010, R. 56, nr 12, 12; 1424-1426
0032-4140
Pojawia się w:: Pomiary Automatyka Kontrola
Dostawca treści:: Biblioteka Nauki

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