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Wyświetlanie 1-15 z 52
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
Artykuł
Tytuł:
Fuzzy Alliance and Coalitions that Can Be Formed by Alliance Agents
Autorzy:
Mashkov, Viktor
Smolarz, Andrzej
Lytvynenko, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/27311942.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
alliance
coalition
multi-agent systems
modeling and simulation
Opis:
The paper deals with alliances and coalitions that can be formed by agents or entities. It is assumed that alliance agents cooperate and form coalitions for performing the tasks or missions. It is considered that alliance agents are unselfish. That is, they are more interested in achieving the common goal(s) than in getting personal benefits. In the paper, the concept of fuzzy alliance was introduced. A fuzzy alliance is considered as generalization of traditional alliance allowing agents to decide on the capabilities that their agents can and wanted deliver to coalition. Coalitions that can be formed by fuzzy alliance agents were considered. The definition of the “best” coalition was explained. The method of how to find the “best” coalition among all possible coalitions was suggested and verified by computer simulation.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 4; 713--718
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On impact of disturbance in the deployment problem of multi-agent system
Autorzy:
Topolewicz, Katarzyna
Olaru, Sorin
Girejko, Ewa
Dórea, Carlos E.T.
Powiązania:
https://bibliotekanauki.pl/articles/27312010.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
multi-agent systems
deployment problem
robust invariant set
set-theoretic analysis
disturbance
Opis:
The paper is dedicated to the robustness analysis of scalar multi-agent dynamical systems. The open problem we aim to address is the one related to the impact of additive disturbances. Set-theoretic methods are used to achieve the main results in terms of positive invariance and admissible bounds on the disturbances.
Źródło:
Archives of Control Sciences; 2023, 33, 2; 299--320
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of separation method between aircraft in the transition period
Autorzy:
Żuchowska, Daria
Stelmach, Anna
Powiązania:
https://bibliotekanauki.pl/articles/38955842.pdf
Data publikacji:
2022
Wydawca:
Politechnika Warszawska, Wydział Transportu
Tematy:
Airborne Separation Assurance System
distributed air traffic control
new concepts of air traffic control
multi-agent systems
ruch lotniczy
sterowanie ruchem lotniczym
kontrola ruchu lotniczego
system wieloagentowy
Opis:
The current concept of air traffic control based on human work was created many years ago and is now approaching the limit of its performance. Therefore, new concepts for air traffic control are being sought. One of the ideas is to delegate the responsibility for ensuring separation between aircraft to aircraft crews. The issue of self-separation is quite a difficult task. Analysis of the literature concludes that the transition from one phase to another will occur in stages. This paper focuses on the transition period. The concept of a method of ensuring separation when changing traffic organization was proposed. A vital element of the separation method in the transition period is to define the negotiation and communication process between aircraft, which was presented in this paper.
Źródło:
WUT Journal of Transportation Engineering; 2022, 135; 5-16
1230-9265
Pojawia się w:
WUT Journal of Transportation Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Multi agent deep learning with cooperative communication
Autorzy:
Simões, David
Lau, Nuno
Reis, Luís Paulo
Powiązania:
https://bibliotekanauki.pl/articles/1837537.pdf
Data publikacji:
2020
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
multi-agent systems
deep reinforcement learning
centralized learning
Opis:
We consider the problem of multi agents cooperating in a partially-observable environment. Agents must learn to coordinate and share relevant information to solve the tasks successfully. This article describes Asynchronous Advantage Actor-Critic with Communication (A3C2), an end-to-end differentiable approach where agents learn policies and communication protocols simultaneously. A3C2 uses a centralized learning, distributed execution paradigm, supports independent agents, dynamic team sizes, partiallyobservable environments, and noisy communications. We compare and show that A3C2 outperforms other state-of-the-art proposals in multiple environments.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2020, 10, 3; 189-207
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Dynamic Epistemic Logic for Actual Knowledge
Autorzy:
Wójcik, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/750022.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Dynamic epistemic logic
logic of public announcements
knowledge representation
problem of logical omniscience
actual knowledge
epistemic change
multi-agent systems
Opis:
The dynamic epistemic logic for actual knowledge models the phenomenon of actual knowledge change when new information is received. In contrast to the systems of dynamic epistemic logic which have been discussed in the past literature, our system is not burdened with the problem of logical omniscience, that is, an idealized assumption that the agent explicitly knows all classical tautologies and all logical consequences of his or her knowledge. We provide a sound and complete axiomatization for this logic.
Źródło:
Bulletin of the Section of Logic; 2020, 49, 1
0138-0680
2449-836X
Pojawia się w:
Bulletin of the Section of Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cluster consensus of general fractional-order nonlinear multi agent systems via adaptive sliding mode controller
Autorzy:
Yaghoubi, Zahra
Talebi, Heidar Ali
Powiązania:
https://bibliotekanauki.pl/articles/230002.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nonlinear multi agent systems
cluster consensus
fractional-order systems
adaptive sliding mode controller
Opis:
In this paper cluster consensus is investigated for general fractional-order multi agent systems with nonlinear dynamics via adaptive sliding mode controller. First, cluster consensus for fractional-order nonlinear multi agent systems with general form is investigated. Then, cluster consensus for the fractional-order nonlinear multi agent systems with first-order and general form dynamics is investigated by using adaptive sliding mode controller. Sufficient conditions for achieving cluster consensus for general fractional-order nonlinear multi agent systems are proved based on algebraic graph theory, Lyapunov stability theorem and Mittag-Leffler function. Finally, simulation examples are presented for first-order and general form multi agent systems, i.e. a single-link flexible joint manipulator which demonstrates the efficiency of the proposed adaptive controller.
Źródło:
Archives of Control Sciences; 2019, 29, 4; 643-665
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fine tuning of agent-based evolutionary computing
Autorzy:
Mizera, Michal
Nowotarski, Pawel
Byrski, Aleksander
Kisiel-Dorohinicki, Marek
Powiązania:
https://bibliotekanauki.pl/articles/91820.pdf
Data publikacji:
2019
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
multi-agent systems
metaheuristics
evolutionary computing
Opis:
Evolutionary Multi-agent System introduced by late Krzysztof Cetnarowicz and developed further at the AGH University of Science and Technology became a reliable optimization system, both proven experimentally and theoretically. This paper follows a work of Byrski further testing and analyzing the efficacy of this metaheuristic based on popular, high-dimensional benchmark functions. The contents of this paper will be useful for anybody willing to apply this computing algorithm to continuous and not only optimization.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2019, 9, 2; 81-97
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Integracja wiedzy nieustrukturalizowanej w wieloagentowym systemie wspomagania decyzji finansowych
Integration of unstructured knowledge in a multi-agent financial decision support system
Autorzy:
Hernes, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/590258.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Decyzje finansowe
Integracja wiedzy nieustrukturalizowanej
Systemy wieloagentowe
Financial decisions
Multi-agent systems
Unstructured knowledge integration
Opis:
Agenty funkcjonujące w systemach wieloagentowych często podejmują decyzje na podstawie wyników przetwarzania wiedzy nieustrukturalizowanej. Ponieważ wiedza ta pochodzi z heterogenicznych źródeł, to przedstawiane przez agenty warianty decyzji mogą się różnić. Jednak w procesie decyzyjnym wymagana jest jedna, ostateczna decyzja, zatem wiedza ta powinna być automatycznie integrowana. Celem niniejszego artykułu jest opracowanie metody integracji wiedzy nieustrukturalizowanej z wykorzystaniem teorii consensusu w wieloagentowym systemie wspomagania decyzji finansowych. W pierwszej części artykułu przedstawiono zagadnienia związane z reprezentacją wiedzy nieustrukturalizowanej agentów. Następnie opracowano algorytmy consensusu umożliwiające integrację wiedzy. W ostatniej części artykułu scharakteryzowano eksperyment badawczy przeprowadzony w celu weryfikacji opracowanej metody.
Agents running in multi-agent systems more often make decisions based on the unstructured knowledge, acquired from heterogonous sources, therefore decisions presented by these agents’ may differ. The decision-making process requires one, the final decision, therefore this knowledge should be automatically integrated. The purpose of this paper is to develop method for the integration of unstructured knowledge in multi- agent financial decision support system. The first part of article presents the issues related to agents’ unstructured knowledge representation are described. Next, the developed consensus algorithms have been presented. The last part presents research experiment aimed to verification of the developed method.
Źródło:
Studia Ekonomiczne; 2016, 275; 57-75
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 52

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