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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2009.tde-13072009-154149
Document
Author
Full name
Luis Gustavo Nardin
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Sichman, Jaime Simão (President)
Dignum, Maria Virgínia Ferreira de Almeida Júdice Gamito
Wassermann, Renata
Title in Portuguese
Uma arquitetura de apoio à interoperabilidade de modelos de reputação de agentes.
Keywords in Portuguese
Arquitetura baseada em serviços
Inteligência artificial
Reputação
Sistemas multiagentes
Abstract in Portuguese
Em sistemas multiagentes (SMA), a impossibilidade de controle do comportamento interno dos agentes propicia a emergência de dilemas sociais. Uma das possíveis abordagens para resolver tais dilemas é a abordagem social, que tem no conceito de reputação seu principal mecanismo de controle. Para agilizar a obtenção da reputação, torna-se essencial que os agentes cooperem, trocando informações a respeito de reputação. Assim, a partir de diversas observações, avaliações e troca de informações sobre reputação pode-se observar o surgimento da ordem social no sistema global. Entretanto, a heterogeneidade semântica entre os diferentes modelos de reputação torna a interação de agentes um problema, principalmente em SMA abertos. Este trabalho propõe uma arquitetura baseada em serviços, denominada SOARI, para o tratamento deste problema. Esta arquitetura apóia o mapeamento e tradução de conceitos entre ontologias de modelos de reputação distintos através do uso de uma ontologia comum no domínio da reputação. Para ilustrar o uso da arquitetura, foram realizados diversos experimentos nos domínios de comércio eletrônico e de avaliação de obras de arte. Neste último caso, analisou-se os impactos causados nos agentes como conseqüência da habilitação de uma maior expressividade e heterogeneidade na comunicação sobre reputação.
Title in English
An architecture to support the agent reputation models interoperability.
Keywords in English
Artificial inteligence
Multiagent systems
Reputation
Service oriented architecture
Abstract in English
In Multiagent Systems (MAS), controlling the internal agent's behavior is impossible and therefore social dilemma may emerge. One possible approach to solve the problem is the social approach, which considers reputation as its main control mechanism. In order to accelerate the reputation evaluation, it is essential that the cooperating agents could exchange information about reputation. Thus, by using observations, evaluations and information exchange about reputation the social order in the global system may occur. However, the semantic heterogeneity of different reputation models makes agent interaction a problem, especially in open MAS. This work proposes a service oriented architecture, named SOARI, to deal with this problem. This architecture supports concept mapping and translation among different reputation model ontologies by using a common ontology. In order to illustrate its deployment, several experiments in the electronic commerce and art appraisal domains were performed. In the latter it was analyzed the effects caused on the agents as a consequence of a more expressive and heterogeneous communication about reputation.
 
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Publishing Date
2009-07-16
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • NARDIN, Luis G., et al. Effects of reputation communication expressiveness in virtual societies : A multivariate statistical analysis [doi:10.1007/s10588-012-9151-9]. Computational and Mathematical Organization Theory [online], .
  • Nardin, Luis G., et al. Effects of reputation communication expressiveness in virtual societies [doi:10.1007/s10588-012-9151-9]. Computational and Mathematical Organization Theory [online], 2013, vol. 20, p. 113-132.
  • Nardin, Luis G., Brandão, Anarosa A.F., and Sichman, Jaime S. Experiments on semantic interoperability of agent reputation models using the SOARI architecture [doi:10.1016/j.engappai.2011.05.004]. Engineering Applications of Artificial Intelligence [online], 2011, vol. 24, p. 1461-1471.
  • NARDIN, Luis G., BRANDãO, Anarosa A.F., and SICHMAN, Jaime S.. Experiments on semantic interoperability of agent reputation models using the SOARI architecture [doi:10.1016/j.engappai.2011.05.004]. Engineering Applications of Artificial Intelligence [online], 2011, vol. 24, n. 8, p. 1461-1471.
  • NARDIN, Luis Gustavo, et al. A service-oriented architecture to support agent reputation models interoperability. In Workshop on ontologies and their applications (WONTO), 3, Salvador, 2008.
  • NARDIN, Luis Gustavo, et al. Effects of communication expressiveness in agent reputation models interoperability: a multivariate analysis approach. In International Conference on Reputation (ICORE), 2, Montpellier, 2011.
  • NARDIN, Luis Gustavo, et al. Effects of expressiveness and heterogeneity of reputation models in the ART testbed: some preliminary experiments using the SOARI architecture. In International Workshop on Trust in Agent Societies (TRUST), 12, Budapest, 2009.
  • FALCONE, Rino, et al. Trust in Agent Societies [doi:10.1007/978-3-540-92803-4_15]. Editor. Berlin, Heidelberg : Springer Berlin Heidelberg, 2008. chap. 15, SOARI : A Service Oriented Architecture to Support Agent Reputation Models Interoperability, p. 292-307. Lecture Notes in Computer Science.
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