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The CA3 group is composed of a research and development team and a group of qualified scientific advisors directly involved in R&D projects where CA3 is a partner.

We also have a variable number of visiting scientists and collaborators working with us. The former member section has previous group members.

Rita A. Ribeiro (Ph.D.) - (Coordinator CA3 - UNINOVA)
  • Ph.D., University of Bristol, "Support Logic Programming Applied to Decision Support Systems", U. K., 1993
  • M.Sc., Information Systems Technology, George Washington University, Washington D.C., USA, 1988
  • Licenciatura (5 year degree), Management and Business Administration, Instituto Superior de Economia, Portugal, 1981
Research Interests
  • Fuzzy Multicriteria Decision Making. New concepts and methodologies with a focus on Space applications.
  • Fuzzy Optimization. Fuzzy mathematical programming and non-exhaustive search algorithms as solving techniques.
  • Fuzzy Expert Systems and applications.
  • Decision Support Systems and Decision Making models.
Publications - DataBases

Publications
Books and Journals:
2008 onwards
  • R. A. Ribeiro, A. Falcão, A.Mora, J. M. Fonseca. FIF: A Fuzzy information fusion algorithm based on multi-criteria decision making, Knowledge-Based Systems Journal (2013).URL: http://dx.doi.org/10.1016/j.knosys.2013.08.032 (http://www.sciencedirect.com/science/article/pii/S0950705113002694)
  • Dorotovic, Ivan; Shahamatnia, Ehsan; Lorenc, M.; Rybanský, M.; Ribeiro, Rita A; Fonseca, José M. 2014. "Sunspots and Coronal Bright Points Tracking using a Hybrid Algorithm of PSO and Active Contour Model", Sun and Geosphere 9, 1-2: 81-84. http://newserver.stil.bas.bg/SUNGEO/00SGArhiv/SG_v9_No1_2014-pp-81-84.pdf
  • Pinto, A; Ribeiro, R.A.; Nunes, I.L. (2013) Ensuring the Quality of Occupational Safety Risk Assessment, Risk Analysis, Vol. 33(3), pp 409-419, DOI: 10.1111/j.1539-6924.2012.01898.x.
  • I. S. Brito, A. Moreira, R.A. Ribeiro, J. Araujo. Handling conflicts in Aspect-Oriented requirements engineering. In: Aspect-Oriented Requirements Engineering, Editors: A. Moreira,R. Chitchyan, J. Araujo, A. Rashid. Chapter 12, pp 225-241. Springer-Verlag (2013) DOI: 10.1007/978-3-642-38640-4_12 ISBN: 978-3-642-38640-4 (eBook).
  • Dargam F. ,Linden I. , Shaofeng S., Ribeiro R. A. , Zarate P. The Development Roadmap of the EWG-DSS Collab-Net Project: A Social Network Perspective of DSS Research Collaboration in Europe. In: Decision Support Systems II - Recent Developments Applied to DSS Network Environments. (Editors):J. E. Hernández, S. Liu, B. Delibašic, P. Zarate, F. Dargam, R. Ribeiro. Lecture Notes in Business Information Processing, Vol 164, Springer-Verlag. 2013. DOI: 10.1007/978-3-642-41077-2_1
  • Luís Teixeira, Rita A. Ribeiro, Gabriel Lopes, António Falcão, Ricardo Raminhos, "BrainMap - A Navigation Support System in a Tourism Case Study". 4th IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2013, Technological Innovation for the Internet of Things. L.M. Camarinha, S. Tomic, P. Graça (Eds). Springer, Costa da Caparica, Portugal, 2013, pp. 99-106. DOI: 10.1007/978-3-642-37291-9_11
  • Luís F. S. Teixeira, Gabriel P. Lopes, Rita A. Ribeiro Language Independent Extraction of Key Terms: An Extensive Comparison of Metrics. In: Filipe J, Fred A (eds) Agents and Artificial Intelligence, vol 358. Communications in Computer and Information Science. Springer Berlin Heidelberg, 2013. pp 69-82. DOI:10.1007/978-3-642-36907-0_5
  • M. Milenkovic, N. Bojovic, R.A. Ribeiro, N. Glisovic. A fuzzy simulated annealing approach for project time-cost trade-off. Journal of Intelligent & Fuzzy Systems, 23, IOS Press (2012) pp203-215. DOI:10.3233/IFS-2012-0510
  • M. L. R. Varela, G. D. Putnik, R. A. Ribeiro. A web-based platform for collaborative manufacturing scheduling in a virtual entreprise. International Journal Information and Communication Technologies for the Adanced Entreprise. Vol 2, nr 2, (2012) ISSN:1647-1707 pp 87-108, URL: http://www.ict4ae.org/downloads/ictae_2012_vol_2.pdf#page=88
  • P. Bosc, G. De Tré, J. Dujmovic, A. Hadjali, O. Piert, R. Ribeiro, S. Zadrozny. Editorial on: On advances in soft computing applied to databases and information systems. Fuzzy Sets and Systems 196 (2012) 1-3. DOI: http://dx.doi.org/10.1016/j.fss.2012.01.020 , ISSN: 0165-0114
  • F. Pinheiro, PhD; T. Simas; J.Fernandes; R. Ribeiro, Application of Neural Networks to the study of stellar model solutions. New Astronomy 2012. DOI: http://arxiv.org/abs/1203.6045 , ISSN: 1384-1076
  • Simoes, L., Bourdarias, C., and Ribeiro, R.A., Real-Time Planetary Landing Site Selection -- A Non-Exhaustive Approach, Acta Futura, 5 (2012) pp.39-52. DOI: http://dx.doi.org/10.2420/AF05.2012.39
  • Shahamatnia, E., Dorotovic, I., Ribeiro, R.A., and Fonseca, J.M., Towards an automatic sunspot tracking: Swarm intelligence and snake model hybrid, Acta Futura, 5, (2012) pp.151-159.DOI: http://dx.doi.org/10.2420/AF05.2012.153
  • "Pinto, Abel; Ribeiro, Rita A. and Nunes, Isabel L. (2012) Fuzzy approach for reducing subjectivity in estimating occupational accident severity, Accident Analysis & Prevention, Vol. 45, (March), pg. 281-290, ISSN 0001-4575, (DOI: 10.1016/j.aap.2011.07.015)
  • A.Arrais-Castro, M. L. R. Varela, G. D. Putnik, R. A. Ribeiro Collaborative network platform for multi-site production.. In Decision Support Systems - Collaborative Models and Approaches in Real Environments. Hernández, J.E., Zarate, P., Dargam, F. Delibašic, B., Liu, S. and Ribeiro, R. (Eds.), Lecture Notes in Business Information Processing (LNBIP), Springer Berlin Heidelberg, vol 121: 1-13 (2012). DOI: 10.1007/978-3-642-32191-7_1
  • G. Campanella, A. Pereira, R. A. Ribeiro, and L. R. Varela. Collaborative Dynamic Decision Making: a Case Study from B2B Supplier Selection. In Decision Support Systems - Collaborative Models and Approaches in Real Environments. Hernández, J.E., Zarate, P., Dargam, F. Delibašic, B., Liu, S. and Ribeiro, R. (Eds.), Lecture Notes in Business Information Processing (LNBIP), Springer Berlin Heidelberg, vol 121: 88-102 (2012). DOI: 10.1007/978-3-642-32191-7_7
    " G. Campanella and R. A. Ribeiro A Framework for dynamic multiple criteria decision making. Decision Support Systems, Volume 52, Issue 1, December 2011, Pages 52-60. DOI: http://dx.doi.org/10.1016/j.dss.2011.05.003 , ISSN: 0167-9236
  • G. Campanella and R. A. Ribeiro A Framework for dynamic multiple criteria decision making. Decision Support Systems (forthconming 2011).G. Campanella and R. A. Ribeiro A Framework for dynamic multiple criteria decision making. Decision Support Systems (forthconming 2011).
  • A. F. Pinto, I.L. Nunes, R.A. Ribeiro. Risk Assessment in Construction Industry – Overview and Reflection. Safety Science 49 (2011) : 616-624. http://dx.doi.org/10.1016/j.ssci.2011.01.003
  • S. Agostinho, A. M. Moreira, A. Marques, J. Araujo, R. Ferreira, R. Raminhos, R. Ribeiro, I. Brito, P. Chevalley. Aspect-oriented specification: a case study in Space domain. International Journal of Software Engineering and Knowledge Engineering, Vol 20, issue 6 (2011) :783-808. DOI No: 10.1142/S0218194010004943 WoS.
  • R. A. Ribeiro, A.M. Moreira, P. V.D. Broek, A. Pimentel. Hybrid Assessment Method for Software Engineering Decisions. Decision Support Systems 51(2011): 208-219 doi:10.1016/j.dss.2010.12.009
  • R. Bouaziz, T. Simas, P. Zarate, R. Ribeiro, F. Dargam. A Social-Academic Network Analysis of the EURO Working Group on DSS. International Journal of Decision Support Systems Technology, IGI-Global,Vol 2, No 4, December (2010) :13-37
  • R. A. Ribeiro, T. C. Pais, L. F. Simões. Benefits of full-reinforcement operators for spacecraft target landing. In: “Preferences and Decisions”, S. Greco, R. A. M. Pereira, M. Squillante, R. R. Yager, J. Kacprzyk (Eds.) Studies in Fuzziness and Soft Computing, Volume 257, Springer-Verlag (2010) : 353-367
  • T. C. Pais, R. A. Ribeiro, L. F. Simões. Uncertainty in dynamically changing input data. In: Computational Intelligence in Complex Decision Systems. DaRuan (Ed), Atlantis Computational Intelligent Systems-Vol 2, Chapter 2, World Scientific (2010). ISBN: 978-90-78677-27-7.
  • R. A. Marques Pereira, R.A. Ribeiro, P. Serra. Rule correlation and integration in fuzzy inference systems. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems Vol. 16, No. 5 (2008) 601–626.WoS
  • B.R. Santos, T. Fonseca, M. Barata, R. A. Ribeiro, P. Sousa. A method for automatic fuzzy set generation using sensor data. Autosoft- Intelligent Automation and Soft Computing International Journal Vol 14, No 3 (2008), 279-292. WoS.
  • C. Coelho, P. Serra, R. A. Ribeiro, R. A. Marques-Pereira, A. Dietz, A. Donati. Fuzzy alarm system for laser gyroscopes degradation. Autosoft- Intelligent Automation and Soft Computing International Journal, Vol 14, No 3 (2008) pp. 351-365. WoS.
  • S.H. Alavi, J. Jassbi, P.J. A. Serra, R. A. Ribeiro. Defining fuzzy measures: A comparative study with genetic and gradient descent algorithms. In: Intelligent Engineering Systems and Computational Cybernetics, Edited by J. Tenreiro Machado, B. Patkai, J. Rudas, Springer, e-ISBN 978-1-4020-8678-6 (2008) 427-438.
  • P. Serra, R. A. Ribeiro, R. A. Marques Pereira, R. Steel, M. Niezette, A. Donati Fuzzy Thermal Alarm System for Venus Express. In: Encyclopedia of Decision Making and Decision Support Technologies. Editors: Frederic Adam and Patrick Humphreys. Publisher: Information Science Reference, Vol I (2008) 391-401
  • R. A. Ribeiro, I. L. Nunes. Interfaces Usability for Monitoring Systems In: Encyclopedia of Decision Making and Decision Support Technologies. Editors: Frederic Adam and Patrick Humphreys. Publisher: Information Science Reference, Vol II. (2008).

Before 2008
  • S.H. Alavi, J. Jassbi, P.J. A. Serra, R. A. Ribeiro. Defining fuzzy measures: A comparative study with genetic and gradient descent algorithms. In: Intelligent Systems at the Service of Mankind, Edited by B. Patkai, J. Tenreiro Machado,J. Rudas, Vol 3, Springer (2007).
  • P. Serra, R. A. Ribeiro, R. A. Marques Pereira, R. Steel, M. Niezette, A. Donati Fuzzy Thermal Alarm System for Venus Express. In: Encyclopedia of Decision Making and Decision Support Technologies. Editors: Frederic Adam and Patrick Humphreys. Publisher: Idea Group (2007).
  • R. A. Ribeiro, I. L. Nunes. Interfaces Usability for Monitoring Systems In: Encyclopedia of Decision Making and Decision Support Technologies. Editors: Frederic Adam and Patrick Humphreys. Publisher: Idea Group (2007).
  • I. S. Brito, F. Vieira, A. Moreira, R.A. Ribeiro. Handling conflicts in aspectual requirements compositions. In: Lecture Notes in Computer Science (LNCS), Transactions on Aspect-Oriented Software Development. Special issue on “Early Aspects”. Ed: J. Araujo, E. Baniassad (2007).
  • P. A.C. Sousa, J. P. Pimentão, R. A. Ribeiro. Operational risk management: How an I-DSS may help. Journal of Decision Systems, Vol. 16, No 2 (2007).
  • Rita A. Ribeiro. Fuzzy space monitoring and fault detection applications. Journal of Decision Systems Vol 15, No 2-3 (2006).
  • Antonio Rosado, Rita A. Ribeiro, Slawomir Zadrozny, Janusz Kacprzyk. Flexible query languages for relational databases: An overview. In: Flexible databases supporting imprecision and uncertainty, Gloria Bordogna and Giuseppe Psaila (eds), Studies in Fuzziness and Soft Computing Series, Vol 203, Springer (2006).
  • R. A. Ribeiro, A. M. Moreira. Fuzzy query interface for a business database. International Journal of Human-Computer Interfaces Vol. 58, No 4, (2003) 363-391.
  • R. A. Ribeiro, A. M.D. Moreira and E. Declercq. A fuzzy evaluation model: a case for intermodal terminals in Europe. In: Applied Decision Support with Soft Computing. Editors: Xinghuo Yu, Janusz Kacprzyk . Series Studies in Fuzziness and Soft Computing, Vol 124, Springer (2003) 218-233.
  • Rita A. Ribeiro, Leonilde R. Varela. Fuzzy Optimization using Simulated Annealing: An Example Set. In: Fuzzy Sets Based Heuristics for Optimization. J-L. Verdegay (editor). Studies in Fuzziness and Soft Computing Series, Springer, Vol 126 (2003) 159-180.
  • R. Marques-Pereira, Rita A. Ribeiro. Aggregation with generalized mixture operators using weighting functions. Fuzzy Sets and Systems, FSS 137 (2003) 43-58.
  • R. Ribeiro, A. Rodrigues, P. Zaraté (editors). Special number of the European Journal of Operations Research, EJOR, on Decision Support Systems, Vol 145(2), March 1, 2003, pp231.
  • Rita A. Ribeiro, R. Marques-Pereira. Generalized mixture operators using weighting functions: a comparative study with WA and OWA. European Journal of Operational Research, 145 (2), March 1 (2003) 329-342.
  • Leonilde R. Varela, Rita A. Ribeiro. Utilização de Simulated Annealing em Optimização Difusa, (in Portuguese). Investigação Operacional, 21(2). Dez( 2001), pp205-231.
  • Tiago Simas, Rita A. Ribeiro. Voice Recognition Using a Multiple Attribute Model, (in Portuguese). Revista da Associação Portuguesa de Investigação Operacional (APDIO), 21, Junho 2001, pp 93-105.
  • João Moura-Pires, Fernando Moura-Pires, Rita A. Ribeiro. Why Leximin FCSPs are so Hard for Local Search, In: Uncertainty in Intelligent and Information Systems, Editors: B. Bouchon-Meunier, R. Yager, L. Zadeh. Series: Advances in Fuzzy Systems- Applications and Theory, Vol 20. World Scientific (2000), pp 185-196.
  • M. S. Marques, R. A. Ribeiro, A. G. Marques. A Fuzzy Decision Support System for Equipment Repair under Battle Conditions. Fuzzy Sets and Systems, Nr 115 (2000), pp 141-157.
  • Isabel L. Nunes, Rita A. Ribeiro e Virgílio A. Machado. Application of fuzzy sets theory to the evaluation of office chairs , In: O Trabalho Humano com Sistemas Informatizados no Sector de Serviços, (Eds:) L. Sznelwar e L. Zidan, Editora Plêiade, (2000), pp 455-465.
  • Rita A. Ribeiro. Fuzzy evaluation of the thermal quality of buildings. Computer-Aided Civil and Infrastucture Engineering, 14, (1999) 155-162.
  • Rita A. Ribeiro, F. Moura-Pires. Fuzzy linear programming via simulated annealing. Kybernetika, Vol. 35 (1), (1999) 57-67.
  • Rita A. Ribeiro, R. Yager, H-J Zimmermann, J. Kacprzyk(Editors). Soft Computing in Financial Engineering Physica-Verlag, series on Studies in Fuzziness and Soft Computing, (1999).
  • Rita A. Ribeiro, F. Moura Pires. Financial analysis of non-financial companies with neural networks. In: Soft Computing in Financial Engineering. Rita A. Ribeiro, R. Yager, H-J Zimmermann, J. Kacprzyk (Editors). Physica-Verlag, Heidelberg (a Springer-Verlag company), series on Studies in Fuzziness and Soft Computing, (1999) 320-338.
  • Philip Powell and Rita A. Ribeiro. Uncertainty in decision making. In: Encyclopedia of Microcomputers. Edited by: A. Kent, J. G. Williams, Volume 22, supplement 1, (1999) 335-346.
  • Ribeiro, R. A., F. M. Pires. Fuzzy site location problems and simulated annealing. Studies in Locational Analysis, 13 (June) (1999) 61-76.
  • Isabel M. Nunes, Rita A. Ribeiro Sistemas Periciais Difusos em Ergonomia: O caso do ERGO-X. Revista Portuguesa de Ergonomia, 4, Junho (1999) 19-35
  • Isabel M. Nunes, Rita A. Ribeiro, Virgílio A. P. Machado. Ergo_X: A fuzzy expert system for the design of workstations. In: Erogonomics for Global Quality and Productivity. Edited by R. Bishu, W. Karwowski, R. Goonnetileke (1998).
  • Isabel L. Nunes, Rita A. Ribeiro, Virgilio Machado. Aplicação da teoria dos conjuntos difusos em ergonomia. Ingenium, 2-Serie, August (1998) 77-80.
  • Rita A. Ribeiro. Fuzzy multiple attribute decision making: A review and new preference elicitation Techniques. Fuzzy Sets and Systems . 78, (1996) 155-181.
  • Rita A. Ribeiro, J.F. Baldwin. A multiple attribute fuzzy decision support System: two applications. In: Fuzzy Logic and Soft Computing, Editors: B. Bouchon-Meunier, R. Yager and L. Zadeh. Series on Advances in Fuzzy Systems Vol. 4.World Scientific (1995) 452-461.
  • Rita A. Ribeiro, Philip Powell, J.F. Baldwin. Uncertainty in decision support systems: an abductive perspective. Decision Support Systems, 13, (1995) 183-193.
  • Rita A. Ribeiro. Introduction to fuzzy decision making, DSS- Galore! Brannback, M. and Leino, T. (Eds), Institute for Advanced Management Systems Research, Finland, (1995) 109-114.
  • J.F. Baldwin, Rita A. Ribeiro. Fuzzy reasoning by case for decision support systems. Uncertainty, Fuzziness and Knowledge-Based Systems 2 (1). (1994) 11-24.
  • Rita A. Ribeiro. Application of support logic theory to fuzzy multiple attibute decision probems. PhD Thesis, University of Bristol, U.K. (1994).

Conference Proceedings:
2008 onwards
  • I. Dorotovic, E. Shahamatnia, M. Lorenc, M. Rybanský, R. A. Ribeiro, J. M. Fonseca. Sunspots and Coronal Bright Points Tracking using a Hybrid Algorithm of PSO and Active Contour Model, Sun and Geosphere, Special Edition "2012 UN/Ecuador Workshop on ISWI", Vol. 9, No. 1-2, pp. 81-84. http://newserver.stil.bas.bg/SUNGEO/00SGArhiv/SG_v9_No1_2014-pp-81-84.pdf
  • E. Shahamatnia, I. Dorotovic, R.A. Ribeiro, and J.M. Fonseca "A PSO/Snake Hybrid Algorithm for Determining Differential ?Rotation of Coronal Bright Points", In the proceedings of the 5th International ?Joint Conference on Computational Intelligence (IJCCI-ECTA), Vilamoura, Portugal, ??20-22 September, 2013.? (Received the best Student Paper Award)
  • A. Mora, J. M. Fonseca, R. Ribeiro. Real-time Image Recovery Using Temporal Image Fusion. IEEE Proceedings of the International Conference on Fuzzy Systems, FUZZIEEE, India, 7-10 July (2013).
  • Teixeira, L. F. S. Pereira Lopes, G. & Ribeiro, R. A. An Extensive Comparison of Metrics for automatic extraction of Key Terms. Proceedings of the 4th International Conference on Agents and Artificial Intelligence (ICAART 2012 ), Algarve, Portugal, pp. 55-63
  • Teixeira, L. F. S. Pereira Lopes, G. & Ribeiro, R. A., "Automatic Extraction of Document Topics" Proceedings of Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS'11, Springer, Caparica, Portugal, 21-23 Feb. 2011, pp 101-108. DOI: http://dx.doi.org/10.1007/978-3-642-19170-1_12
  • Vieira, G. G., Varela, M. L. R., Ribeiro, R. A., 'Fuzzy Web Platform for electrical energy Losses Management', Proceedings of the International Symposium on computational Intelligence for Engineering Systems, ISCIES'11, Coimbra, Portugal, 16-18 November, 2011.
  • E.Shahamatnia, R. Ayanzadeh, R.A. Ribeiro, and S.Setayeshi, 'Adaptive Imitation Scheme for Memetic Algorithms', Proceedings of Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS'11, Springer, Caparica, Portugal, 21-23 Feb. 2011, DOI: http://dx.doi.org/10.1007/978-3-642-19170-1_12
  • G. Campanella, L. R. Varela, R. A. Ribeiro. 'A Model for B2B Selection' edited by Bernard De Baets, János Fodor, Carlos Serodio, Pedro Couto, Pedro Melo-Pinto, Advances in Intelligent and Soft Computing, Volume 107, Springer-Verlag 2011, pp: 221-228, DOI: 10.1007/978-3-642-24001-0_21
  • Fonseca, J. M.; Rodrigues, N. M.; Mora, A. D.; Ribeiro, R. A. Optical character recognition using automatically generated Fuzzy classifiers. Eighth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2011, vol.1, pp.448-452, 26-28 July 2011 DOI: 10.1109/FSKD.2011.6019585
  • Tiago Simas, R. A. Ribeiro, F. Pinheiro, J. Fernandes. I-DSS for Identifying Stars Degeneracy. In: Supplemental proceedings of the 15th International Conference of IFIP WG 8.3 on Decision Support Systems (DSS2010), Lisbon, July (2010).
  • Hesam Dashti, T.Simas, R. A. Ribeiro, A. Assadi, A. Moitinho. MK-means: Modified K-means clustering algorithm Proceedings of the 2010 IEEE World Congress on Computational Intelligence (WCCI 2010), Barcelona, Spain July (2010).
  • Hesam T. Dashti, Adel Ardalan, Alireza F. Siahpirani, Jernej Tonejc, Ioan V. Uilecan, Tiago Simas, Bruno Miranda, Rita Ribeiro, Liya Wang, and Amir H. Assadi. Pattern Recognition in Collective Cognitive Systems: Hybrid Human-Machine Learning (HHML) By Heterogeneous Ensembles WORLDCOMP'10 - The 2010 World Congress in Computer Science, Computer Engineering, and Applied Computing, Las vegas, USA, July (2010)
  • Clement Bourdarias, Reynaud, S., Drai, R., Simões, L. F., and Ribeiro, R. A. Optimized and flexible multi-criteria decision making for hazard avoidance. In Proceedings of the 33rd Annual AAS Rocky Mountain Guidance and Control Conference, Colorado, USA. American Astronautical Society. (2010).
  • Abel Pinto, Isabel L. Nunes and Rita A. Ribeiro Qualitative Model for Risk Assessment in Construction Industry: A Fuzzy Logic Approach. In: Emerging Trends in Technological Innovation. First IFIP WG 5.5/SOCOLNET Doctoral conference on Computing Electrical and Industrial Systems, DoCEIS2010 Ed: L.M Camarinha-Mtos, P. Pereira, L. Ribeiro, Caparica, Portugal, February (2010) :105-110. WoK
  • Abel Pinto, Isabel L. Nunes and Rita A. Ribeiro, Framework for Ensuring Risk Assessment Completeness in Construction Industry, in 17th World Congress on Ergonomics, 9-14 Aug, Beijing-Rep Pop. China (2009)
  • C. Gomes; RA Ribeiro; A. Pimentel A SWDSS – An experience in transforming a single system into a software product line. Proceedings of the 4th Iberian Conference on Information Systems and Technologies, June (2009), Povoa de Varzim PORTUGAL : 161-166 . WoK.
  • T. Pais and R. A. Ribeiro, Contributions to Dynamic Multicriteria Decision Making Models. In: Proceedings of the International Fuzzy Systems Association World Congress & European Society for Fuzzy logic and technology Conference (IFSA-EUSFLAT 2009) , Lisbon, Portugal, July 20-24, 2009 : 719-724. ISBN: 978-989-95079-6-8
  • L. F. Simoes, T. C. Pais, R. A. Ribeiro, G. Jonniaux, and S. Reynaud, Search methodologies for efficient planetary site selection. In: IEEE Congress on Evolutionary Computation (CEC 2009), Norway, May 2009 :1981-1987.
  • T. Simas, G. Silva, B. Miranda, A. Moitinho, and R. Ribeiro. Knowledge Discovery in Large Data Sets. In: Classification and Discovery in Large Astronomical Surveys, C.A.L. Bailer-Jones (ed.), AIP Conference Proceedings vol. 1082, AIP (Melville, New York), 2008 :196-201. ISBN978-0-7354-0613-1
  • M. M. Gomes, B. R. Santos, T. Simas, P. Sousa, R. A. Ribeiro. Reducing the number of membership functions in linguistic variables: Application to a fuzzy monitoring system. 8Th Internatinal Conference on Application of Fuzzy Systems and Soft Computing (ICAFS-08), Helsinki, Finland, Sept 1-3, 2008 : 198-206.
  • T. C. Pais, R.A. Ribeiro,Y. Devouassoux, S. Reynaud. Regions rating for selecting spacecraft landing sites. In: Proceedings of the 8th International FLINS Conference on Fuzzy Logic and Intelligent Technologies in Nuclear Science, Madrid, Spain, September 21-24, 2008 : 1039-1044 WOK
  • Y. Devouassoux, S. Reynaud, G. Jonniaux, R. A. Ribeiro, T. C. Pais. Hazard avoidance developments for planetary exploration. In: Proceedings of the 7th International ESA Conference on Guidance, Navigation & Control Systems, Tralee, Ireland,2-5 June 2008.
  • T. C. Pais, R.A. Ribeiro,Y. Devouassoux, S. Reynaud Dynamic ranking algorithm for landing site selection. In: Proceedings of the Int. Conference on Information Processing and Management of Uncertainty (IPMU´08), Malaga, June 2008.

Before 2008
  • M. Figueiredo, G. Martins, M.Barata, P. Sousa, R. A. Ribeiro Real time embedded system for control and monitoring a drill process. In: Proceddings of the 2nd International Conference on Electrical Engineering (CEE'07), Coimbra, Portugal, Nov 2007.
  • J. Jassbi, S. H. Alavi, Paulo J. A. Serra, R. A. Ribeiro Transformation of a Mamdani FIS to First Order Sugeno FIS. Proceedings of the IEEE International Conference on Fuzzy Systems (FUZZ-IEEE2007), July 2007.
  • A.Marques, R. Raminhos, R. Ferreira, R. A. Ribeiro, S. Agostinho, A Moreira, J. Araujo Aspect-Oriented Analysis Applied to Space Domain. Proceedings of the 9th International Conference on Enterprise Information Systems (ICEIS2007), Madeira, Portugal, June 2007.
  • I. Dorotovic, J. Fernandes, J.M. Fonseca, A. Mora, R.A. Ribeiro COSIS: Coimbra Observatory Solar Information System Coimbra Solar Physics Meeting on: The Physics of Chromospheric Plasmas, ASP Conference Series, Vol. , 2007
  • D. Jameux, R. Vitulli, R.A. Ribeiro, T. Fonseca, B. Santos, M. Barata. Monitoring & Diagnosis on-board software module for Mars driller. Proceedings of the 5th International Workshop on Planning and Scheduling for Space., Baltimore, USA, October 2006.
  • R. A. M. Pereira, P. Serra, R. A. Ribeiro. Choquet integration and correlation matrices in fuzzy inference systems. Proceedings of the International conference 9th Fuzzy Days, Dortmund, In: Computational intelligence, Theory and Applications, Ed: B. Reusch, Series Advances in Sift Computing, Springer. Germany, September 2006.
  • A. Rosado, R. A. Ribeiro. Formalizing fuzzy object role modeling schemas in the FConQuer system. Proceedings of the International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2006),Paris, July 2006.
  • P. Sousa, J. Pimentao, R. A. Ribeiro. Intelligent decision support tool for prioritizing equipement repairs in critical/disaster situations. Proceedings of the IFIP WG8.3 I International Conference on Creativity and Innovation in Decision Making and Decision Support (CIDMDS 2006). Edited by F. Adam, P.Brézillon, S. Carlsson, P. Humphreys, Vol 2. Decision Support Press, ISBN 1-905800-01-0, London, June 2006.
  • S. H. Alavi, J. Jassbi, P.J. Serra, R. A Ribeiro Comparison of Genetic and Gradient Descent Algorithms for determining fuzzy measures. Proceedings of the IEEE 10th International Conference on Intelligent Enginering Systems (INES 06). London June 2006. CD Rom.
  • J. J. Jassbi, P. J. A. Serra, R. A. Ribeiro, A. Donati. Comparison of Mamdani and Sugeno fuzzy inference systems for a space fault detection application. Proceedings of the World Automation Congress (WAC2006), Hungary, July 2006.
  • B. R. Santos, P. T. Fonseca, M. Barata, R. A. Ribeiro, P. Sousa. New Data preparation process – A case study for an ExoMars Drill. Proceedings of the World Automation Congress (WAC2006), Hungary, July 2006.
  • R. A. Ribeiro. Application of fuzzy logic in space monitoring and fault detection problems. Proceedings of the Joint Workshop on Decision Support Systems, Experimental Economics & e-Participation. Graz, Austria, June 2005.
  • Marta Pantoquilho, Joaquim Neto, Nuno Viana, João Moura-Pires, Rita Ribeiro. Online and offline monitoring and diagnosis of spacecraft and space weather status. Proceedings of the Workshop on Data and Knowledge Engineering, EUROFUSE04, Warszawa, Poland, September 2004.
  • R. A. Ribeiro, R.A. Marques Pereira. The role of weighting functions in ranking alternatives. Proceedings of Workshop on Data and Knowledge Engineering, EUROFUSE04, Warsaw, Poland, September 2004.
  • O. Iglesias, R. A. Ribeiro, J. R. Fonseca. A fuzzy multi-agent bidding model. Proceedings of the IEEE/WIC/ACM International conference in Intelligent Agent Technologies (IAT´04), China, September 2004.
  • N. Viana, A. Pereira, R. A. Ribeiro, A. Donati. Handling missing values in solar array performance degradation forecasting. Proceedings of the 15th Mini-EURO conference on Managing Uncertainty in Decision Support Models (MUDSM 2004), Coimbra, Portugal, September 2004.
  • O. Iglesias, R. A. Ribeiro, J. R. Fonseca. A Bidding Model using Fuzzy Multi-Criteria for Transportation. Proceedings of the 15th Mini-EURO conference on Managing Uncertainty in Decision Support Models (MUDSM 2004), Coimbra, Portugal, September 2004.
  • A. Rosado, Rita A. Ribeiro. Extending object-role modeling for fuzzy conceptual queries. Proceedings of the International Conference on Intelligent Processing and Management of Uncertainty in Knowledge-Based Systems, IPMU2004, Perugia, Italy, July 2004.
  • O. Iglesias, R. A. Ribeiro, J. R. Fonseca. Modellling fuzzy multi-criteria negotiation in transportation. Proceedings of the 5th Workshop on Agent- Based Simulation, ABS04, Lisbon, Portugal, May 2004, : 11-16.
  • A. Pereira, R. A. Ribeiro, P. A. Sousa, M. Pantoquilho, P. Bravo, A. Falcão, S. D’Élia. An Ontology to Support Knowledge Enabled Services on Earth Observation. Proceedings of the ESA-EUSC 2004: Theory and Applications of Knowledge driven Image Information Mining, with focus on Earth Observation Madrid, Spain, March 17-18, 2004 (to be published in ESA special publication number 533).
  • M. Simões Marques, R. A. Ribeiro, L. Correia. Preference modeling for agents adaptation. Proceedings of the 4th International Workshop on Preferences and Decisions, Trento, Italy, September 2003, :113- 118.
  • M. Chli, P. De Wilde, J. Goossenaerts, V. Abramov, N. Szirbik, L. Correia, P. Mariano, R. Ribeiro, Stability of Multi-Agent Systems, Proceedings of the 2003 IEEE International Conference on Systems, Man, and Cybernetics" 2003, :551-556
  • M. Simões-Marques, P. Mariano, R. Ribeiro, L. Correia, M. Chli, P. De Wilde, V. Abramov, J. Goosenaerts Contributions to adaptable agents societies. Proceedings of the 9th IEEE International Conference on Emerging Technologies and Factory Automation. Lisbon, Portugal, September 2003 :354-361
  • P. Mariano, M. Simões-Marques, L. Correia, R. Ribeiro, V. Abramov, J. Goosenaerts, M. Chli, P. De Wilde. A model for agent mobility and interaction. Proceedings of the 9th IEEE International Conference on Emerging Technologies and Factory Automation, (work-in-progress session). Lisbon, Portugal, September 2003, :142-145.
  • S. Khanmohammadi, R. A. Ribeiro, J. Jassbi. Multi criteria decision making using dynamics of criteria. Proceedings of the 11th Mediterranean Conference on Control and Automation (MED03), June 2003, #T3-013.
  • L.R. Varela, R. A. Ribeiro, F. Moura-Pires. Simulated annealing & fuzzy optimization. Proceedings of the 10th Mediterranean Conference on Control and Automation (MED02), Lisbon, Portugal, July (2002).
  • F. Moura-Pires, R. A. Ribeiro, A. Pereira, F. J. Varas, G. Mantovani, A. Donati. Data quality fuzzy expert system. Proceedings of the 10th Mediterranean Conference on Control and Automation (MED02), Lisbon, Portugal, July (2002).
  • A.Pereira, F. Moura-Pires, R. A. Ribeiro, L. Correia, N. Viana, F. J. Varas, G. Mantovani, P. Bargellini, R. Perez-Bonilla, A. Donati. Fuzzy expert system for gyroscope fault detection . Proceedings of the 16th European Simulation Multiconference, Artificial Intelligence and Neural Network Track, 3-5 June, Darmstadt, Germany (2002).
  • A. Rosado, J. Kacprzyk, Rita A. Ribeiro, Slawomir Zadrozny. Fuzzy querying in crisp and fuzzy relational databases: an overview . International Conference on Intelligent Processing and Management of Uncertainty in Knowledge-Based Systems, Annecy, France, July, IPMU´2002.
  • T. Marwala, P. De Wilde, V. Abramov, N.Szirbik, J. Goossenaerts , L.Correia, P. Mariano, R. A. Ribeiro. Scalability and optimisation of a committee of agents using genetic algorithms , In: Proceedings of International Symposium on Soft Computing and Intelligent Systems for Industry, Paisely, Scotland. Best Paper Award (2001).
  • V. Abramov, N.Szirbik, J. Goossenaerts, T. Marwala, P. De Wilde, L.Correia, P. Mariano, R. Ribeiro. Ontological basis for open distributed multi-agent system. Proceedings of the Symposium on Adaptive Agents and Multi-agents Systems, The Society for the study of AI and the Simulation of Behaviour, AISB´01, 2001, pp 22-43.
  • P. Mariano, A. Pereira, L.Correia, R. A. Ribeiro, V. Abramov, N.Szirbik, J. Goossenaerts, T. Marwala, P. De Wilde. Simulation of a trading multi-agent system. Proceedings of the IEEE SMC´01, Symposium on Tecnology Economic and Social Applications of Distributed Intelligence (TESADI´01), USA, Oct 2001.
  • E. Declercq, G. Janssesn, A. Moreira, R.A.Ribeiro. EMOLITE: evaluation model for the optimal location of intermodal terminals in Europe. Proceedings of the 9th World Conference on Transport Research (9th WCTR), Seoul, Korea, July, 2001.
  • Rita A. Ribeiro, Ricardo Marques-Pereira. Weights as function of attribute satisfaction values. Proceedings of the Workshop on Preference Modelling and Applications, EUROFUSE´2001, Granada, May 2001.
  • Isabel L. Nunes, Rita A. Ribeiro. Fuzzy versus classical methods comparison in ergonomics evaluations. Proceedings of the Portuguese conference on "Ergonomia na Gestão pela Qualidade", Costa da Caparica-Portugal, 6-7 April, (2000), pp 1-6
  • Isabel L. Nunes, Rita A. Ribeiro. The ERGO_X workstation analysis compared with other ergonomics tools.Proceedings "Ergonomics for the New Millenium (IEA 2000/HFES 2000)", San Diego-USA, 29 Jul - 4 August, Vol. 5, (2000), pp 33-36
  • Rita A. Ribeiro. Criteria importance and satisfaction in decision making. Proceedings of the International Conference on Intelligent Processing and Management of Uncertainty in Knowledge-Based Systems, IPMU´2000, Spain, July (2000), pp 754-758.
  • Isabel L. Nunes, Rita A. Ribeiro, Virgílio A. Machado. Knowledge base of the ergonomics expert system ERGO_X. Proceedings of the World Automation Congress, WAC´2000, , Maui, Havaii, June (2000), CDRomISSCI101.
  • Isabel L. Nunes, Rita A. Ribeiro. ERGO_X - The evaluation process by means of a fuzzy multiple attribute decision making methodology. Proceedings of the International Conference on Computer-Aided Ergonomics and Safety, CAES 99, P. Mondelo, M. Mattila e W. Karwowski, Eds, Barcelona - Espanha, 19-21 May, CDRom (1999).
  • A.S. Castelhano, S. R. Barros, R. A. Ribeiro, A. M. Moreira. Fuzzy intelligent queries on the 500 biggest Portuguese companies . Proceedings of the European Congress on Intelligent Techniques and Soft Computing, EUFIT 99, Verlag Mainz, Aachen, September (1999), CDRom.
  • Rita A. Ribeiro and Ana M. Moreira. Intelligent Query Model for Business Characteristics . Proceedings of the 3rd World Multiconference on Circuits, Systems, Communications and Computers, IEEE/WSES/IMACS CSCC 99, Grece, July (1999).CD Rom.
  • Isabel L. Nunes, Rita A. Ribeiro. Fuzzy evaluation module of ERGO_X, Proceedings of the IFORS SPC-9 Conference on Intelligent and Active DSS, Turku, April (1999), pp 92-100.
  • A. M. Moreira, R. A. Ribeiro E. Declercq, O. Schinas, P. Guerreiro, G. Janssen. Optimal location of intermodal terminals in Europe: an evaluation model. . Proceedings of the European Congress on Intelligent Techniques and Soft Computing, EUFIT'98, Vol. 2, Verlag Mainz, Aachen, September (1998) pp1057-1061.
  • F. Moura-Pires, Rita A. Ribeiro. A new risk function for fuzzy linear programming. Proceedings of the World Automation Congress (WAC'98), Alaska, May, (1998), CDRom138.1:138.10.
  • Isabel L. Nunes, Rita A. Ribeiro, Virgilio Machado. ERGO_X, a fuzzy expert system for the design of workstations. Proceedings of the 1st. World Congress on Ergonomics for Global Quality and Productivity, Edited by R. Bishu, W. Karwowski and R. Goonnetilleke, Hong-Kong, July (1998), pp 232-235.
  • Joao Moura-Pires, Fernando Moura Pires e Rira A. Ribeiro. Structure and properties of leximin FCSP and its influence on optimisation algorithms. Proceedings of the International Conference of Information Processing and Management of Uncertainty (IPMU'98), Editions EDK, Paris, France, July (1998), 188-194.
  • Mario Simoes Marques, Rita A. Ribeiro. Sistema de apoio a decisão, baseado em logica difusa, para a gestão de prioridades de reparacao de avarias de equipamentos, em situacão de combate. In: "Projecto, Construção e Manutenção de Navios", Portuguese Escola Naval, April (1998), 25.1-25.15.
  • A. Moreira, R. Ribeiro e E. Declercq. Optimal location of intermodal terminals in Europe: an evaluation model. 9th Mini Euro Conference on Fuzzy Sets in Traffic and Transport Systems, Budva, Jugoslavia, September, (1997).
  • Isabel L. Nunes, Rita A. Ribeiro, Virgilio Machado. Ranking ergonomic office chairs via fuzzy sets. Proceedings of the Second France-Quebec International Congress of Industrial Engineering. Albi, França, September (1997), CDRom.
  • Rita A. Ribeiro, F. Moura-Pires. Fuzzy linear programming and simulated annealing. Proceedings of the 5th IEEE Mediterranean Conference on Control and Systems, Cyprus, IEEE Society Press, July (1997) CD-Rom.
  • Isabel L. Nunes, R. A. Ribeiro, Virgilio Machado. Application of fuzzy set theory to the evaluation of office chairs. Proceedings International Symposium on Working with Computerized Systems in the Service Sector. Brasil, April, (1997).
  • Isabel L. Nunes, Rita A. Ribeiro, Virgilio Machado. O tratamento de incerteza em ergonomia via conjuntos difusos. Actas do Encontro Nacional de Engenharia e Gestão Industrial. Portugal, June (1997), 1-6.
  • Isabel L. Nunes, Rita A. Ribeiro, Virgilio Machado. Sistemas periciais em ergonomia. Actas da 1st Conferência Internacional sobre Ergonomia, Segurança e Higiene Ocupacionais, Portugal, June (1997), 99-102.
  • F. Moura Pires, J. Moura Pires, Rita A. Ribeiro. Solving fuzzy optimisation problems: flexible approaches using simmulated annealing. Proceedings of the World Automation Congress (WAC´96), Ed: M. Jamshidi, M. Fathi and F. Pierrot, TSI Press, (1996), 501-508.
  • Rita A. Ribeiro, J. F. Baldwin. A decision support system in FRIL . Proceedings of the European Congress on Intelligent Techniques and Soft Computing, EUFIT’94, Verlag Mainz, Aachen, September (1994), pp 404-409.
  • J. F. Baldwin, Rita A. Ribeiro. Fuzzy reasoning by case for decision support systems. Proceedings da International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU´92), Maiorca, July, (1992).
  • Rita A. Ribeiro, J. F. Baldwin. Partial matching in fuzzy image recognition . Proceedings of the IEEE/ACM International Conference on 'Developing and Managing Expert Systems Programs'. IEEE Computer Society Press. October (1991), 215-222.
  • Pedro Barahona, Rita A. Ribeiro. Building an expert decision support system: the integration of A.I. and O.R. methods . NATO ASI series, Vol. F61, 'Knowledge, Data and Computer-Assisted Decisions'. Ed: M. Schader and W. Gaul, Springer-Verlag, Berlin, (1990).
  • P.Falcão, M. Pereira, R. A. Ribeiro, P. Barahona. Another timetabling approach . Proceedings of the IEE International Conference on ' Expert Planning Systems', IEE Press, Vol 322. Inglaterra, June (1990).
  • Rita A. Ribeiro, Ralph Bunker. Prototyping analysts: structured analysis, PROLOG and prototyping. Proceedings of the ACM SIGCPR Conference on 'Management of Information Systems Personnel', ACM Press, EUA, April (1988), 109-118.

Recent Invited Talks / Seminars:
  • Dynamic Multi-Criteria Decision Making (MCDM): A Framework´. Plenary lecture at The EURO THE EURO mini-conference, GRAZ-2013, on Collaborative decisison Systems in economics, complex societal & environmental applications. Graz, Austria, October 17-19, 2013
  • Fuzzy Decision Making in Space applications´ Pleanary lecture at IEEE 16th International Conference on Intelligent Engineering Systems 2012 (INES2012), Portugal, June 2012.
  • Computer Intelligence techniques in Space Weather' Invited talk at the 2011 ISWI -Europe Summer School in Space Science, supported by the International Space Weather Initiative (ISWI), held in Tatranska Lomnica, Slovakia, August 21-27, 2011.
  • Computational Intelligence techniques in Lunar Space engineering' Invited talk at BEST summer course 2011 on 'The man the Moon, an odissey in Space engineering' held in Caparica, Portugal, August 16-22, 2011.
  • Decision Making Challenges in Space Applications' Plenary talk at the Workshop on Decision Systems, EWG-DSS London2011, held in London, UK, June 23-24, 2011.
  • Invited talk on “Soft Computing in Space Applications” presented at the Workshop on “Soft Computing: Where Theory Meets Applications”, held in Trojanovice, Czech Republic, December 13-16, 2009.
  • R. A. Ribeiro, T. C. Pais. “Reinforcement Operators in Spacecraft Landing”. Invited talk at 5th workshop on Preferences and Decisions, Trento, Italy 6-8 April, 2009. URL: http://events.unitn.it/en/trento2009/proceedings

Senior Research team
rar@uninova.pt CTS, Campus FCT-UNL
+351 21 294 96 25
+351 21 294 85 27/8/9 (ext. 13738)