Self-interested Service-Oriented Agents Based on Trust and QoS for Dynamic Reconfiguration Nelson Rodrigues, Paulo Leitão and Eugênio Oliveira Abstract Progressively increasing complexity of dynamic environments, in which services and applications are demanded by potential clients, requires a high levei of reconfiguration of the offer to better match that ever changing demand. In particular, the dynamic change of the clienfs needs, leading to higher exigency, may require a smart and flexible automatic composition of more elementary ser- vices. By leveraging the service-oriented architectures and muld-agent system benefits, the paper proposes a method to explore the flexibility of the decision support for the services' reconfiguration based on several pillars, such as trust, reputation and QoS models, which allows the selection based on measuring the expected performance of the agents. Preliminary experimental results, extracted from a real case scenario, allow highlighting the benefits of the proposed distrib- uted and flexible solution to balance lhe workload of service providers in a simple and fast manner. The proposed soluüon includes the agents' intelligent decision- making capability to dynamically and autonomously change services selecüon on the fly, towards more trustworthy services with better quality when unexpected events happen, e. g. broken machines. We then propose the use of competitive self- interested agents to provide services that best suits to the client through dynamic service composiüon. N. Rodrigues (S) . P. Leitão . E. Oliveira LIACC-Artificial Intelligence ana Computer Science Laboratory, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal e-mail: nrodrigues@ipb.pt P. Leitão e-mail: pleitao@ipb. pt E. Oliveira e-mail: eco@fe. up. pt N. Rodrigues . P. Leitão Polytechnic Institute of Bragança, Campus StaApolónia, 5301-857 Bragança, Portugal E. Oliveira Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal © Springer International Publishing Switzerland 2015 T. Borangiu et al. (eds. ), Service Orientation in Holonic and Multi-agent Manufacturing, Studies in Computational Intelligence 594, DÓI 10. 1007/978-3-319-15159-5_20 209