Lúcio Sanchez Passos
University of Porto
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Featured researches published by Lúcio Sanchez Passos.
international conference on intelligent transportation systems | 2011
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti; Joaquim Gabriel
Implementing and deploying a complete multi-agent system in whatever domain, especially those that are inherently complex and dynamic, is undoubtedly a very hard and time-consuming task. This paper analyzes the adequacy of traditional approaches in the field of Agent-Oriented Software Engineering to create adequate multi-agent systems applicable to the transportation domain. Our findings suggested that, albeit some approaches are intended to be generic enough to represent a wide range of different domains, intelligent transportation systems and more specifically the whole complexity of future urban transport are not totally supported. We propose a novel methodology where the concept of services is considered as peer of agents, ambient and processes. Also services rise as prominent elements in the modeling phase. The approach, illustrated as a typical scenario in the transport domain, is instantiated, which serves to clarify the whole process and main concepts in our modeling methodology.
iberian conference on information systems and technologies | 2014
Ruben Veloso; Zafeiris Kokkinogenis; Lúcio Sanchez Passos; Gustavo Oliveira; Rosaldo J. F. Rossetti; Joaquim Gabriel
Unmanned Aerial Vehicles (UAVs) are gaining the attention of researchers around the world. Recently researchers apply the multi-agent paradigm to such domain taking advantage of its research in cognition, deliberation, and mainly coordination mechanisms. The aim of our research is to contribute to the multiple quadcopter simulation area introducing a platform for the design, simulation, and development of quadcopter MultiAgent Systems (MAS). Specifically for this paper, we minutely discuss the proposed architecture and present the implemented prototype focusing our experiments on the scalability and the resource usage of it. The results demonstrate that the centralised perspective limits the scalability mainly when the physical engine is being used; also, we identify that the method responsible for the 3D update is the platforms bottleneck. After this work different type of studies in social interaction of quadcopters will follow up as well as the improvement of the proposed architecture, for instance, using a multi-threading approach.
international conference on intelligent transportation systems | 2010
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti; Eugénio C. Oliveira
In this paper we review the concept of Ambient Intelligence (AmI) and investigate its inherent technological services in the light of potential applications to ITS-related scenarios. Albeit AmI and ITS may seem to overlap in many aspects, they are indeed different and their true synergetic and mutual benefits have not been fully explored nor exploited. Therefore, coupling these two emerging fields might foster a cross-fertilization of opportunities, both for researchers in the scientific community and engineers as well as practitioners in charge of traffic operations. Bearing in mind such a challenging motivation, we propose an integrated research framework where AmI meets ITS requirements in the real world, is analysed in a virtual environment and support decision-making within virtual control strategists and management policy makers modelled under the metaphor of autonomous agents. Issues are still to be addressed and are discussed as future work opportunities.
systems man and cybernetics | 2017
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti
Detecting and diagnosing unwanted behavior in multiagent systems (MASs) are crucial to ascertain correct operation of agents. Current techniques assume a priori knowledge to identify unexpected behavior. However, generation of MAS models is both error-prone and time-consuming, as it exponentially increases with the number of agents and their interactions. In this paper, we describe a light-weight, automatic debugging-based technique, coined extended spectrum-based fault localization for MAS (ESFL-MAS), that shortens the diagnostic process, while only relying on minimal information about the system. ESFL-MAS uses a heuristic that quantifies the suspiciousness of an agent to be faulty. Different heuristics may have a different impact on the diagnostic quality of ESFL-MAS. Our experimental evaluation shows that 10 out of 42 heuristics (namely accuracy, coverage, Jaccard, Laplace, least contradiction, Ochiai, Rogers and Tanimoto, simple-matching, Sorensen-dice, and support) yield the best diagnostic accuracy (96.26% on average) in the context of the MAS used in our experiments.
iberian conference on information systems and technologies | 2014
Ruben Veloso; Gustavo Oliveira; Lúcio Sanchez Passos; Zafeiris Kokkinogenis; Rosaldo J. F. Rossetti; Joaquim Gabriel
Small-scale Unmanned Aerial Vehicles (UAVs) are gaining the attention of researchers around the world, due to their versatility and performance in both indoor and outdoor applications. The whole project aims to specify and implement a symbiotic simulation platform to assist the design, development and testing of UAVs that use a quad-rotor configuration. Additionally, in this paper we firstly discuss the integration of two software components to build the simulation environment: Jason, an agent-oriented platform for the development and simulation of multi-agent systems and the jME3 game engine, used for 3-dimensional simulations of the models. Further, we describe the implementation of the physical multi-rotor system and present some preliminary results, as well as the description of the symbiotic simulation platform.
iberian conference on information systems and technologies | 2011
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti; Zafeiris Kokkinogenis
iberian conference on information systems and technologies | 2010
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti
international conference on artificial intelligence | 2015
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti
Archive | 2009
Lúcio Sanchez Passos; Rosaldo J. F. Rossetti
international conference on intelligent transportation systems | 2013
Lúcio Sanchez Passos; Zafeiris Kokkinogenis; Rosaldo J. F. Rossetti; Joaquim Gabriel