Temat: multi-agent system - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: THE IMPACT OF SALES SERVICE IN MAREA TRADING SIMULATION UNDER CHANGING ENVIRONMENT CIRCUMSTANCES
Autorzy:: Sperka, Roman
Halaska, Michal
Tematy:: multi-agent system
simulation
model
trading
MAREA; Pokaż więcej
Wydawca:: Instytut Badań Gospodarczych
Powiązania:: https://bibliotekanauki.pl/articles/517150.pdf Link otwiera się w nowym oknie
Opis:: Research background: Managerial scientists use a lot of modelling techniques for business processes. In this paper we are focused on agent-based modelling and simulations, which emerged in the last two decades as a new approach. Autonomous and interacting intelligent agents are able to model and simulate complex systems in the business sphere. With the use of agent-based modelling and simulations we are able to understand how macro level outcomes are affected by micro level processes and vice versa. Purpose of the article: The purpose of the paper is to introduce recent development in the area of agent-based modelling and simulations focused on the business domain. Managers often have to make difficult decisions under the uncertainty and high risks. Agent-based modelling can provide powerful tools for lowering those risks through a possibility of running experiments, which is normally impossible in economics. In the second part we want to support the usefulness of agent-based simulations with our own simulations. Methods: The method used in this article is an agent-based simulation in a multi-agent system. We use a framework called MAREA. It is a simulation environment with integrated ERP system based on REA ontology. Our simulation model is based on a retail company that sells electronics. For simplicity, in our setup we trade with computer cables. Findings & Value added: In our simulations we experimented with the quality of sales service provided by company’s sales representatives. We investigated the impact of quality of sales service on company KPIs under the changing environment circumstances represented by disturbance agent. The quality of sales service is a part of quality of service and thus it affects the perception of brand and loyalty of customers towards the company. In our simulation setup we work with two types of customers, long-term customers and new ones. The result is that quality of sales service has mostly positive effects on company KPIs.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Negocjacje w systemach wieloagentowych z zastosowaniem standardów FIPA
Negotiations in Multi-Agent Systems Using FIPA Standards
Autorzy:: Stanek, Stanisław
Żytniewski, Mariusz
Tematy:: Negocjacje
Systemy multiagentowe
Multi-agent system
Negotiations; Pokaż więcej
Wydawca:: Uniwersytet Ekonomiczny w Katowicach
Powiązania:: https://bibliotekanauki.pl/articles/593390.pdf Link otwiera się w nowym oknie
Opis:: The key standards for negotiation in multi agent systems are considered. Multiagent systems represent one of the most promising technological paradigms for the development of autonomous, distributed, open and intelligent software systems. Particularly because the agents are autonomous and cannot be assumed to be benevolent negotiation is critical to resolve conflicts. Examples of conflicts include conflicts over the usage of joint resources or task assignments and conflicts between a buyer and a seller in electronic commerce. The process of negotiations may be of many different forms, such as auctions, protocols in the style of the contract net, and argumentation. The paper focuses on the analysis of specification standards provided by FIPA (Foundation of Intelligent Physical Agents). The first part of the study will present basic information about the negotiations in multi-agent systems. For this purpose, will be shown the importance of negotiations in modeling interactions software agents, types of messages used in multi-agent systems using standard FIPA ACL and options for online auctions, which can be aided by software agents. The second part will present the commonly used protocols consistent with FIPA specifications. To this end, we will discuss eleven diagrams depicting the model sequences of interaction agents. Their use can be found in the construction of multi-agent systems.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evolutionary multi-agent system with crowding factor and mass center mechanisms for multiobjective optimisation
Autorzy:: Różański, Mateusz
Siwik, Leszek
Tematy:: evolutionary computation
multi-agent system
multiobjective optimisation; Pokaż więcej
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Powiązania:: https://bibliotekanauki.pl/articles/305591.pdf Link otwiera się w nowym oknie
Opis:: This work presents some additional mechanisms for Evolutionary Multi-Agent Systems for Multiobjective Optimisation trying to solve problems with population stagnation and loss of diversity. Those mechanisms reward solutions located in a less crowded neighborhood and on edges of the frontier. Both techniques have been described and also some preliminary results have been shown.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A multi-agent system in education facility design
Autorzy:: Ślusarczyk, Grażyna
Strug, Barbara
Opis:: This paper deals with a multi-agent system which supports the designer in solving complex design tasks. The behaviour of design agents is modelled by sets of grammar rules. Each agent uses a graph grammar or a shape grammar and a database of facts concerning the subtask it is responsible for. The course of the design process is determined by the interaction between specialised agents. Space layouts of designs are represented by attributed graphs encoding both topological structures and semantic properties of solutions. The agents work in parallel on the common graph, independently generating layouts of different design components while specified node labels evoke agents using shape grammars. The agents’ cooperation allows them to combine a form-oriented approach with a functional-structural one in the design process, where the agents generate the general 3D form of the object based on design requirements together with the space layout based on the functional aspects of the solution. Based on the given design criteria, the agents search for admissible solutions within the design space that constitutes their operating environment. The proposed approach is illustrated by the example of designing kindergarten facilities.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 5.

Tytuł:: Handling uncertainty of resource division in multi agent system using game against nature
Autorzy:: Skrzypczyk, K.
Mellado, M.
Tematy:: multi-agent system
distributed system
negotiations
uncertainty
game theory; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/229553.pdf Link otwiera się w nowym oknie
Opis:: This paper addresses the problem of resource division for robotic agents in the framework of Multi-Agent System. Knowledge of the environment represented in the system is uncertain, incomplete and distributed among the individual agents that have both limited sensing and communication abilities. The pick-up-and-collection problem is considered in order to illustrate the idea presented. In this paper a framework for cooperative task assignment to individual agents is discussed. The process of negotiating access to common resources by intercommunicating agents is modeled and solved as a game against Nature. The working of the proposed system was verified by multiple simulations. Selected, exemplary simulations are presented in the paper to illustrate the approach discussed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Wspomaganie twórczości organizacyjnej na podstawie systemów agentowych
Agent systems to support organizational creativity
Autorzy:: Bartuś, Tomasz
Tematy:: Inteligentny agent
Multi agent system
Twórczość organizacyjna
Intelligence agent
Organizational creativity; Pokaż więcej
Wydawca:: Uniwersytet Ekonomiczny w Katowicach
Powiązania:: https://bibliotekanauki.pl/articles/588325.pdf Link otwiera się w nowym oknie
Opis:: Niniejszy artykuł opisuje wykorzystanie podejścia wieloagentowego do wspierania twórczości organizacyjnej. Dlatego aby pokazać możliwości systemu agen- towego scharakteryzowano termin inteligentny agent i systemy wieloagentowe. Na tej podstawie opisano warunki stosowalności inteligentnych agentów w twórczości organi-zacyjnej. Wynikiem końcowym przedstawionych dociekań jest propozycja warunków, które powinny być spełnione przy wspomaganiu twórczości organizacyjnej przez syste-my agentowe.
This paper describes the use of multi-agent approach to support the organiza¬tional creativity. In order to show capabilities of the agent systems the terms intelligent agent and multi-agent systems were characterized. On this basis the conditions of appli¬cability of intelligent agents in organizational creativity were described. The final result of the submitted paper is the specification of conditions that should be satisfied by supporting the organization creativity with agent systems. The findings and outcomes should be useful for further research in this area.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Balancing electric power in a microgrid via programmable agents auctions
Autorzy:: Pałka, P.
Radziszewska, W.
Nahorski, Z.
Tematy:: multi-agent system
microgrid management
shortshortterm imbalance reduction; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Powiązania:: https://bibliotekanauki.pl/articles/206683.pdf Link otwiera się w nowym oknie
Opis:: The paper presents an application of an auction algorithm in a multi-agent computer system for managing the unbalanced energy in a microgrid. The main goal of the system is to control and minimize the deviations of the current energy dem and from the actual energy production, using an auction algorithm. Distributed generation is assumed in the microgrid, with renewable power sources. The energy storages and the controllable power sources improve the system operation. The differences between the actual demand and produced energy are caused by unpredictable level of electric power generation by uncontrolled sources, like wind turbines or solar panels, and/or randomness of power utilization. The system will tend to balance out these differences on-line in short time intervals (less than one minute) to follow-up varying levels of local power generation and loads.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Evolutionary Learning of Goal-Oriented Communication Strategies in Multi-Agent Systems
Autorzy:: Althnian, A.
Agah, A.
Tematy:: multi-agent system
communication strategy
evolutionary communication
genetic algorithms; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:: https://bibliotekanauki.pl/articles/384735.pdf Link otwiera się w nowym oknie
Opis:: Previous studies in multi-agent systems have observed that varying the type of information that agents communicate, such as goals and beliefs, has a significant impact on the performance of the system with respect to different, usually conflicting, performance metrics, such as speed of solution, communication efficiency, and travel distance/cost. Therefore, when designing a communication strategy for a multi-agent system, it is unlikely that one strategy can perform well with respect to all of performance metrics. Yet, it is not clear in advance, which strategy will be the best with respect to each metric. With multi-agent systems being a common paradigm for building distributed systems in different domains, performance goals can vary from one application to the other according to the domain’s specifications and requirements. To address this issue, this work proposes a genetic algorithm-based approach for learning a goal- oriented communication strategy. The approach enables learning an effective communication strategy with respect to flexible, user-defined measurable performance goals. The learned strategy will determine what, when, and to whom information should be communicated during the course of task execution in order to improve the performance of the system with respect to the stated goal. Our preliminary evaluation shows that the proposed approach has promising results and the learned strategies have significant usefulness in improving the performance of the system with respect to the goals.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Multi-agent system for recognition of hand postures
Autorzy:: Jurek, Janusz
Myśliński, Szymon
Flasiński, Mariusz
Wydawca:: Springer
Opis:: A multi-agent system for a recognition of hand postures of the Polish Sign Language is presented in the paper. The system is based on a syntactic pattern recognition approach, namely on parsable ETPL(k) graph grammars. An occurrence of a variety of styles of performing hand postures requires an introduction of many grammar productions that differ each from other slightly. This makes a construction of a grammar within a parsable class ETPL(k) dubious. Dividing a whole grammar into sub-grammars and distributing them to agents allows one to solve the problem.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 10.

Tytuł:: Problem of agents cooperation in heterogeneous graph-based knowledge environment
Autorzy:: Kotulski, Leszek
Strug, Barbara
Sędziwy, Adam
Wydawca:: Springer International Publishing
Opis:: The important aspect of performance of a multi-agent system deployed in highly non-homogeneous environment is ensuring data confidentiality. In such an environment each agent resides in its local ecosystem characterized by its own data structure and semantics. Moreover agents may also extend their knowledge by sending appropriate queries to other agents. Thus a knowledge diffuses through the system so it may cause unauthorized data accesses. In this article we propose the run-time method of discovering such data leaks and the method of preventing such events.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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