My main research interest areas are:

1. -Artificial Intelligence
   

2. -Evolutionary Computation
   

3. -Artificial Life
   

4. -Computational Biology
   

Bellow a list of some of my publications. If you would like to have a copy of a particular paper just send me an email.

Publications

Books, Book Edition, Book Chapters

Journals

E. Costa e A. Simões, "Artificial Intelligence: foundations and applications”, 2nd Edition (in Portuguese) FCA Editores , Lisboa, 2008.

Gonçalves, Â. and Costa, E. , "A model for an heterogeneous gene regulatory network", in Computational Methodologies for Gene Regulatory Networks, chapter 12, Handbook Research, Sanjoy Das, January 2008.

Costa, F. and Rocha, L. and Costa, E. and Harvey, I. and Coutinho, A. , "Advances in Artificial Life", Lecture Notes in Artificial Intelligence, # 4648, ISBN 9783540749127, September 2007.

Brabazon, A. and Silva, A. F. and Sousa, T. F. and O'Neill, M. and Matthews, R. and Costa, E. , "Simulating Product Invention using InventSim", in Handbook of Research on Nature Inspired Computing for Economy and Management, pp. 379-394, Jean-Philippe Rennard, September 2006.

Brabazon, A. and Silva, A. F. and Costa, E. and Sousa, T. F. and O'Neill, M. , "Simulating the strategic adaptation of organizations using OrgSwarm", in Handbook of bioinspired algorithms and applications, chapter 20, Computer and Information Science, pp. 305-319, Stephan Olariu and Albert Zomaya, January 2006.

Sousa, T. F. and Silva, A. F. and Silva, A. P. and Costa, E. , "Bioinspired data mining", in Handbook of bioinspired algorithms and applications, chapter 27, Computer and Information Science, pp. 469-489, Stephan Olariu and Albert Zomaya, January 2006.

P. Machado, F. B. Pereira, J. Tavares, E. Costa, and A. Cardoso, Evolutionary Turing Machines: The Quest for Busy Beavers, in Recent Developments in Biologically Inspired Computing, L. N. de Castro, F. J. Von Zuben (eds.), Idea Group Inc., 2005.

Maarten Keijzer, Una-May O'Reilly, Simon Lucas, Ernesto Costa, Terence Soule, "Genetic Programming: 7th European Conference", Vol. 3003, Lecture Notes in Computer Science, ISBN 0302-9743, April-2004.

Conor Ryan, Terence Soule, Maarten Keijzer, Edward Tsang, Riccardo Poli and Ernesto Costa (Eds.), Genetic Programming, Lecture notes in Computer Science, Volume 2610, Springer-Verlag, 2003.

P.Quaresma, A. Dourado, E. Costa and J. Costa, Soft Computing and Complex Systems, Centro Internacional de Matemática (CIM), June, 2003.

A. Cardoso, E. Costa, P. Machado, F. C. Pereira and P. Gomes - An Architecture for Hybrid Creative Reasoning. in Sankar K. Tall, Tharan S. Dillon, Daniel S. Yeung (eds.), Soft Computing in Case-Based Reasoning, Springer, 2000,pp. 147-177.

E. Costa and A. Cardoso (Eds.) Progress in Artificial Intelligence, Lecture Notes in Artificial Intelligence, 1323, Springer-Verlag, 1997.

C. Bento and E. Costa, “A Similarity Metric for Retrieval of Cases Imperfectly Explained”, in "Topics in Case-Based Reasoning - Selected papers from the First European conference on Case-Based Reasoning", S.Wess, K. Althoff and M. Richter (Eds.), Springer-Verlag, 1994.

E. Costa, G. Gaspar and H. Coelho, A formal approach to ILEs: a first tentative, in "Student modelling: the key to individualized knowledge-based instructron", J. Greer andG. McCalla (Eds.), Springer- Verlag, 1994, pp. 281-294.

E. Costa (Ed.) New Directions for Intelligent Tutoring Systems, Springer-Verlag, Berlin,1992.

E. Costa, P. Urbano, Machine Learning, Explanation-Based Learning and Intelligent Tutoring Systems, in "New Directions for Intelligent Tutoring Systems", E. Costa (Ed.), Springer-Verlag,1992, pp. 91-106.

E. Costa, The present and future of Intelligent Tutoring Systems, in "New directions in educational technology", E. Scainleen and T. O´Shea editors, Springer Verlag,1992, pp. 97-106.

E. Costa, S. Duchénoy, Y. Kodratoff, A resolution based method for discovering students’ misconceptions, in Intelligent Computer-Aided Instruction, chapter 9, J. Self (Ed.) , published by Chapman and Hall (U.K.) and Methuen (U.S.A.), March, 1987, pp. 156-164.

International Conferences (refereed)

Silva, S. and Costa, E. , "Dynamic Limits for Bloat Control in Genetic Programming - and a review of past and current bloat theories", Genetic Programming and Evolvable Machines, Vol. 10, # 2, pp. 141-179, June 2009.

Tavares, J. and Pereira, F. B. and Costa, E. , "Multidimensional Knapsack Problem: A Fitness Landscape Analysis", IEEE Transactions on Systems, Man and Cybernetics - Part B, Vol. 38, # 3, pp. 604-616, June 2008.

Baptista, T. and Costa, E. , "Evolution of a multi-agent system in a cyclical environment", Theory in Biosciences, Vol. 127, # 2, pp. 141-148, Springer Berlin / Heidelberg, June 2008.

Menezes, T. and Costa, E. , "Modeling Evolvable Brains - An Heterogeneous Network Approach", International Journal of Information Technology and Inteligent Computing, Vol. 2, # 2, January 2008.

Brabazon, A. and Silva, A. F. and Sousa, T. F. and O'Neill, M. and Matthews, R. and Costa, E. , "Organizational strategic adaptation in the presence of inertia", Advances in Complex Systems, Vol. 8, # 4, pp. 497-520, December 2005.

Brabazon, A. and Silva, A. F. and Sousa, T. F. and O'Neill, M. and Matthews, R. and Costa, E. , "Investigating Strategic Inertia Using OrgSwarm", Informatica, # 29, pp. 125-141, January 2005.

Sousa, T. F. and Silva, A. P. and Silva, A. F. and Costa, E. , "Particle Swarm Based Data Mining Algorithms for Classification Tasks", Parallel Computing, # 30, pp. 767-783, Elsevier B. V., January 2004.

Simões, A. and Costa, E. , "Improving Prediction in Evolutionary Algorithms for Dynamic Environments", in Proc. of the Genetic and Evolutionary Computation Conference, pp.

875-888, GECCO 2009, Montreal, Canada, July 2009

Simões, A. and Costa, E. , "Prediction in Evolutionary Algorithms for Dynamic Environments Using Markov Chains and Nonlinear Regression", in Proc. of the 2009 Genetic and Evolutionary Computation Conference, pp. 883-890, GECCO 2009, Montreal, Canada, July 2009

Simões, A. and Costa, E. , "The Influence of Population and Memory Sizes on the Evolutionary Algorithm's Performance for Dynamic Environments", 6th European Workshop on Evolutionary Algorithms in Stochastic and Dynamic Environments (EVOSTOC 2009), Tübingen, Germany, April 2009. [Best Paper Award]

Menezes, T. and Costa, E. , "Coevolution of competing agents species in a game-like environment", in Proc. of the 1st European Workshop on Bio-inspired Algorithms in Games, EvoGAMES 2009, Tübigen, Germany, April 2009

Simões, A. and Costa, E. , "Prediction in Evolutionary Algorithms for Dynamic Environments using Markov Chains and Nonlinear Regression", #TR 2009/001, ISSN 0874-338X, CISUC, Coimbra, Portugal, January 2009

Tomé, P. and Costa, E. and Amaral, L. , "The re-use of experience trough the use o CBR in information systems modelling", International Conference on Agents and Artificial Intelligence, January 2009.

Simões, A. and Costa, E. , "Evaluating Predictor's Accuracy in Evolutionary Algorithms for Dynamic Environments", #TR 2008/004, ISSN 0874-338X, CISUC, Coimbra, Portugal, September 2008

Menezes, T. and Costa, E. , "Artificial Brains as Networks of Computational Building Blocks", in Proc. of the 5th European Conference on Complex Systems, 5th European Conference on Complex Systems, Jerusalem, Israel, September 2008

Simões, A. and Costa, E. , "Evolutionary Algorithms for Dynamic Environments: Prediction using Linear Regression and Markov Chains", in Proc. of the 10th International Conference on Parallel Problem Solving From Nature, pp. 306-315, PPSN X, Dortmund, Germany, September 2008

Tomé, P. and Costa, E. and Amaral, L. , "Improving case retrieval performance through the use o clustering techniques", in Proc. of the International Conference on Enterprise Information Systems (ICEIS 2008), International Conference on Enterprise Information Systems, Barcelona (Spain), June 2008

Tavares, J. and Pereira, F. B. and Costa, E. , "Golomb Rulers: a Fitness Landscape Analysis", in Proc. of the 2008 IEEE Congress on Evolutionary Computation (IEEE CEC 2008), IEEE Congress on Evolutionary Computation, June 2008

Simões, A. and Costa, E. , "The Influence of Population and Memory Sizes on the Evolutionary Algorithm’s Performance for Dynamic Environments", #TR 2008/002, ISSN ISSN 0874-338X, CISUC, Coimbra, Portugal, April 2008

Simões, A. and Costa, E. , "Evolutionary Algorithms for Dynamic Environments: Prediction using Linear Regression and Markov Chains", #TR 2008/001, ISSN ISSN 0874-338X, CISUC, Coimbra, Portugal, March 2008.

Gonçalves, Â. and Costa, E. , "HeRoN: a computational model of gene regulatory networks", 13th Portuguese Conference on Artificial Intelligence, Guimarães, Portugal, December 2007

Baptista, T. and Costa, E. , "The Emergence of a Circadian Rhythm in a Multi-Agent Simulation", in Proc. of the European Conference on Complex Systems 2007, European Conference on Complex Systems 2007, Dresden, Germany, October 2007

Simões, A. and Costa, E. , "Improving Memory’s Usage in Evolutionary Algorithms for Changing Environments", in Proc. of the IEEE 2007 Congress on Evolutionary Computation, IEEE 2007 Congress on Evolutionary Computation, Singapore, September 2007

Tavares, J. and Pereira, F. B. and Costa, E. , "Golomb Rulers: the Influence of Representation and Heuristics", #006, ISSN 0874-338X, CISUC, September 2007

Menezes, T. and Costa, E. , "Designing for Surprise", in Proc. of the 9th European Conference on Artificial Life, ECAL 2007, Lisbon, September 2007

Leitão, T. and Pereira, F. B. and Tavares, J. and Costa, E. , "Niching Techniques: a Study on the Cluster Geometry Optimization Problem", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO 2007), Genetic and Evolutionary Computation Conference (GECCO 2007), London, UK, July 2007

Simões, A. and Costa, E. , "Variable-size Memory Evolutionary Algorithm: Studies on Replacing Strategies and Diversity in Dynamic Environments", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO-2007), Genetic and Evolutionary Computation Conference (GECCO-2007), London, UK, July 2007

Simões, A. and Costa, E. , "Variable-size Memory Evolutionary Algorithm to Deal with Dynamic Environments", in Proc. of the Applications of Evolutionary Computing, pp. 617-626, Lecture Notes in Computer Science, # 4448, EvoWorkshops 2007, Valencia, Spain, April 2007

Menezes, T. and Costa, E. , "The Gridbrain: an Heterogeneous Network for Open Evolution in 3D Environments", in Proc. of the The First IEEE Symposium on Artificial Life, The First IEEE Symposium on Artificial Life, Honolulu, USA, April 2007

Simões, A. and Costa, E. , "Using Linear Regression to Predict Changes in Evolutionary Algorithms dealing with Dynamic Environments", #TR2007/005, ISSN 0874-338X, CISUC, April 2007

Simões, A. and Costa, E. , "Improving Memory-based Evolutionary Algorithms in Changing Environments", #TR 2007/004, ISSN 0874-338X, CISUC, March 2007

Simões, A. and Costa, E. , "Variable-size Memory Evolutionary Algorithm: Studies on the impact of different replacing strategies in the algorithm’s performance and in the population’s diversity when dealing with dynamic environments", #TR 2007/001, ISSN 0874-338X, CISUC, February 2007

Leitão, T. and Pereira, F. B. and Marques, J. and Tavares, J. and Costa, E. , "Niching Techniques: a Study on the Cluster Geometry Optimization Problem", #TR 2007/002, ISSN 0874-338X, February 2007

Tavares, J. and Pereira, F. B. and Costa, E. , "Multidimensional Knapsack Problem: The Influence of Representation", #TR 2007/003, ISSN 0874-338X, CISUC, February 2007

Tomé, P. and Costa, E. and Amaral, L. , "Improving data modelling through the use of case-based reasoning", CAISE'07, Trondheim, Noruega, January 2007

Tomé, P. and Costa, E. and Amaral, L. , "A tool-neutral framework for systematic experience reuse in architecture description", 14th Enterprise Architecture Practioners, Paris (France), January 2007.

Simões, A. and Costa, E. , "Variable-size Memory Evolutionary Algorithm to Deal with Dynamic Environments: an empirical study", #TR 2006/004, ISSN 0874-338X, CISUC, November 2006

Menezes, T. and Baptista, T. and Costa, E. , "Bitbang—a Library for Modern Game AI", in Proc. of the International Digital Games Conference (iDiG 2006), International Digital Games Conference (iDiG 2006), Portalegre, Portugal, September 2006

Menezes, T. and Costa, E. , "A First Order Language to Coevolve Agents in Complex Social Simulations", in Proc. of the European Conference on Complex Systems 2006, European Conference on Complex Systems 2006, University of Oxford, September 2006

Baptista, T. and Menezes, T. and Costa, E. , "BitBang: A Model and Framework for Complexity Research", in Proc. of the European Conference on Complex Systems 2006, European Conference on Complex Systems 2006, Oxford, United Kingdom, September 2006

Tavares, J. and Pereira, F. B. and Costa, E. , "The Role of Representation on the Multidimensional Knapsack Problem by means of Fitness Landscape Analysis", in Proc. of the 2006 IEEE Congress on Evolutionary Computation (CEC'06), IEEE Congress on Evolutionary Computation, Vancouver, Canada, July 2006

Menezes, T. and Baptista, T. and Costa, E. , "Towards the Generation of Complex Game Worlds", in Proc. of the IEEE Symposium on Computational Intelligence and Games (CIG'06), IEEE Symposium on Computational Intelligence and Games, Reno/Lake Tahoe, USA, May 2006.

Silva, S. and Costa, E. , "Comparing Tree Depth Limits and Resource-Limited GP", in Proc. of the 2005 IEEE Congress on Evolutionary Computation, pp. 920-927, 2005 IEEE Congress on Evolutionary Computation, Edinburgh, UK, September 2005

Silva, S. and Costa, E. , "Resource-Limited Genetic Programming: The Dynamic Approach", in Proc. of the GECCO-2005, pp. 1673-1680, Genetic and Evolutionary Computation Conference (GECCO-2005), Washington DC, June 2005

Silva, S. and Silva, P. and Costa, E. , "Resource-Limited Genetic Programming: Replacing Tree Depth Limits", in Proc. of the ICANNGA-2005, pp. 243-246, Adaptive and Natural Computing Algorithms, 7th International Conference on Adaptive and Natural Computing Algorithms (ICANNGA05), Coimbra, Portugal, March 2005

Tavares, J. and Leitão, T. and Pereira, F. B. and Costa, E. , "Evolving Segments Length in Golomb Rulers", 7th International Conference on Adaptive and Natural Computing Algorithms (ICANNGA05), Coimbra, March 2005

Tavares, J. and Pereira, F. B. and Costa, E. , "Golomb Rulers: Experiments with Marks Representation", 7th International Conference on Adaptive and Natural Computing Algorithms (ICANNGA05), Coimbra, March 2005.

Machado, P. and Tavares, J. and Cardoso, A. and Pereira, F. B. and Costa, E. , "Evolving Creativity", Computational Creativity Workshop, 7th European Conference in Case Based Reasoning, Madrid, August 2004

Silva, S. and Costa, E. , "Dynamic Limits for Bloat Control - Variations on Size and Depth", Genetic and Evolutionary Computation Conference (GECCO-2004), Seattle, Washington USA, June 2004

Tavares, J. and Pereira, F. B. and Costa, E. , "Evolving Golomb Rulers", Genetic and Evolutionary Computation Conference (GECCO-2004), Seattle, Washington USA, June 2004

Brabazon, A. and Silva, A. F. and Sousa, T. F. and O'Neill, M. and Matthews, R. and Costa, E. , "A Particle Swarm Model of Organizational Adaptation", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO-2004), pp. 12-23, Vol. 3102, Lecture Notes in Computer Science, Genetic and Evolutionary Computation Conference (GECCO-2004), June 2004

Tavares, J. and Pereira, F. B. and Costa, E. , "Understanding the Role of Insertion and Correction in the Evolution of Golomb Rulers", in Proc. of the Congress on Evolutionary Computation Conference (CEC2004), Congress on Evolutionary Computation, Portland, Oregon, June 2004

Tavares, J. and Machado, P. and Cardoso, A. and Pereira, F. B. and Costa, E. , "On the Evolution of Evolutionary Algorithms", in Proc. of the EuroGP 2004 Proceedings, 7th European Conference on Genetic Programming, Coimbra, Portugal, April 2004.

Silva, A. F. and Silva, A. P. and Costa, E. , "SAPPO: A Simple, Adaptive, Predator Prey Optimiser", in Proc. of the 11th Portuguese Conference on Artificial Intelligence, Workshop on Artificial Life and Evolutionary Algorithms (ALEA), EPIA'03, Beja, Portugal, December 2003

Pereira, F. B. and Tavares, J. and Costa, E. , "Golomb Rulers: The Advantage of Evolution", Workshop on Artificial Life and Evolutionary Algorithms (ALEA’03), Beja, Portugal, December 2003

Barreiros, J. and Costa, E. , "Global routing for lookup-table based FPGAs using genetic algorithms", 13th International Conference on Field Programmable Logic and Applications 2003, Lisbon, Portugal, September 2003

Barreiros, J. and Costa, E. , "An Hierarchic Genetic Algorithm for Computing (near) Optimal Euclidean Steiner Trees", Workshop on Application of Hybrid Evolutionary Algorithms to NP-Complete Problems (GECCO2003), Chicago, July 2003

Tavares, J. and Pereira, F. B. and Machado, P. and Costa, E. , "Crossover and Diversity: A Study about GVR", in Proc. of the Proceedings of the Analysis and Design of Representations and Operators (ADoRo'2003), pp. 27-33, a bird-of-a-feather workshop at the 2003 Genetic and Evolutionary Computation Conference (GECCO-2003), Chicago, Illinois USA, July 2003

Simões, A. and Costa, E. , "An Immune System-Based Genetic Algorithm to Deal with Dynamic Environments: Diversity and Memory", in Proc. of the Sixth International Conference on Neural Networks and Genetic Algorithms (ICANNGA'03), pp. 168-174, Roanne, France, April 2003

Simões, A. and Costa, E. , "A Comparative Study Using Genetic Algorithms to Deal with Dynamic Environments", in Proc. of the Sixth International Conference on Neural Networks and Genetic Algorithms (ICANNGA'03), pp. 203-209, Roanne, France, April 2003

Simões, A. and Costa, E. , "Improving the Genetic Algorithm's Performance when Using Transformation", in Proc. of the Sixth International Conference on Neural Networks and Genetic Algorithms (ICANNGA'03), pp. 175-181, Roanne, France, April 2003

Tavares, J. and Pereira, F. B. and Machado, P. and Costa, E. , "On the Influence of GVR in Vehicle Routing", in Proc. of the 2003 ACM Symposium On Applied Computing (SAC 2003), pp. 753-758, Melbourne, Florida USA, March 2003

Tavares, J. and Pereira, F. B. and Machado, P. and Costa, E. , "GVR Delivers It On Time", in Proc. of the 4th Asia-Pacific Conference on Simulated Evolution And Learning (SEAL'02), pp. 745-749, Singapore, November 2002

Silva, A. F. and Silva, A. P. and Costa, E. , "An Empirical Comparison of Particle Swarm and Predator Prey Optimisation", in Proc. of the Artificial Intelligence and Cognitive Science : 13th Irish International Conference, Vol. 2464, Lecture Notes in Computer Science, AICS 2002, Limerick, Ireland, September 2002

Pereira, F. B. and Tavares, J. and Machado, P. and Costa, E. , "GVR: a New Genetic Representation for the Vehicle Routing Problem", in Proc. of the 13th Irish Conference on Artificial Intelligence and Cognitive Science (AICS 2002), pp. 95-102, Limerick, Ireland, September 2002

Simões, A. and Costa, E. , "Using Genetic Algorithms to Deal with Dynamic Environments: A Comparative Study of Several Approaches Based on Promoting Diversity", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO' 2002), New York, July 2002

Machado, P. and Tavares, J. and Pereira, F. B. and Costa, E. , "Vehicle Routing Problem: Doing it the Evolutionary Way", Genetic and Evolutionary Computation Conference, GECCO-02, New York, USA, July 2002

Simões, A. and Costa, E. , "Parametric Study to Enhance the Genetic Algorithm’s Performance when Using Transformation", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO' 2002), New York, July 2002

Silva, A. F. and Silva, A. P. and Costa, E. , "Chasing the Swarm: A Predator-Prey Approach to Function Optimisation", in Proc. of the Mendel 2002 – 8th International Conference on Soft Computing, pp. 103-110, Mendel 2002, Brno, Czech Republic, June 2002.

Simões, A. and Costa, E. , "On Biologically Inspired Genetic Operators: Transformation in the Standard Genetic Algorithm", in Proc. of the Genetic and Evolutionary Computation Conference, GECCO-2001, pp. 584-591, San Francisco, July 2001

Pereira, F. B. and Costa, E. , "Understanding the Role of Learning in the Evolution of Busy Beavers: a Comparison Between the Baldwin Effect and a Lamarckian Strategy", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO-2001), pp. 884-891, July 2001

Simões, A. and Costa, E. , "Using Biological Inspiration to Deal with Dynamic Environments", in Proc. of the Seventh International Conference on Soft Computing (MENDEL'01), Brno, Czech Republic, June 2001

Simões, A. and Costa, E. , "An Evolutionary Approach to the Zero/One Knapsack Problem: Testing Ideas from Biology", in Proc. of the Fifth International Conference on Neural Networks and Genetic Algorithms (ICANNGA'01), pp. 236-239, Prague, Czech Republic, April 2001

Pereira, F. B. and Costa, E. , "The Influence of Learning in the Evolution of Busy Beavers", in Proc. of the EvoWorkshops 2001: Applications of Evolutionary Computing, pp. 421-430, Como, Italy, April 2001. [Best Paper Award]

Pereira, F. B. and Costa, E. , "How Learning Improves the Performance of Evolutionary Agents: a Case Study with an Information Retrieval System for a Distributed Environment", in Proc. of the Third International Symposium on Adaptive Systems: Evolutionary Computation and Probabilistic Graphical Models, pp. 48-55, Havana, Cuba, March 2001

Coutinho, F. and Fonseca, J. and Barreiros, J. and Costa, E. , "Using Genetic Algorithms to Reduce Jitter in Control Variables Transmitted over CAN", International CAN Conference, October 2000

Silva, A. F. and Silva, A. P. and Costa, E. , "Polymorphy and Hybridization in Genetically Programmed Networks", in Proc. of the Sixth International Conference on Parallel Problem Solving from Nature, pp. 221-231, Paris, France, September 2000

Coutinho, F. and Fonseca, J. and Barreiros, J. and Costa, E. , "Jitter Minimization with Genetic Algorithms", IEEE International Workshop on Factory Communication Systems, September 2000

Simões, A. and Costa, E. , "Using Genetic Algorithms with Sexual or Asexual Transposition: A Comparative Study", in Proc. of the 2000 Congress on Evolutionary Computation (CEC' 2000), pp. 1196-1203, San Diego, USA, July 2000

Barreiros, J. and Costa, E. and Fonseca, J. and Coutinho, F. , "Jitter Reduction in a Real-time Message Transmission System Using Genetic Algorithms", Congress on Evolutionary Computation 2000, San Diego, USA, July 2000

Simões, A. and Costa, E. , "Using Genetic Algorithms with Asexual Transposition", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO' 2000), pp. 323-330, Las Vegas, USA, July 2000

Pereira, F. B. and Costa, E. , "How Adaptive Agents Learn to Deal with Incomplete Queries in Distributed Environments", in Proc. of the Conference on Evolutionary Computation, Special Session on Evolutionary Intelligent Agents (CEC-2000), pp. 1329-1336, San Diego, USA, July 2000

Pereira, F. B. and Machado, P. and Costa, E. and Cardoso, A. and Ochoa-Rodriguez, A. and Santana, R. and Soto, M. , "Too Busy to Learn", in Proc. of the Conference on Evolutionary Computation (CEC-2000), pp. 720-727, San Diego, USA, July 2000

Santana, R. and Ochoa-Rodriguez, A. and Soto, M. and Pereira, F. B. and Machado, P. and Costa, E. and Cardoso, A. , "Probabilistic Evolution and the Busy Beaver Problem", in Proc. of the Late Breaking Papers of the Genetic and Evolutionary Computation Conference (GECCO-2000), pp. 261-268, Las Vegas, USA, July 2000

Pereira, F. B. and Costa, E. , "The Influence of Learning in the Behavior of Information Retrieval Adaptive Agents", in Proc. of the ACM Symposium on Applied Computing (SAC 2000), pp. 452-457, Como, Italy, April 2000.

Silva, A. P. and Silva, A. F. and Costa, E. , "Evolutionary Path Planning for Nonholonomic Robots", in Proc. of the Genetic and Evolutionary Computation Conference, pp. 466-472, GECCO, Orlando, Florida, USA, July 1999

Silva, A. F. and Silva, A. P. and Costa, E. , "Genetically Programming Networks to Evolve Memory Mechanisms", in Proc. of the Proceedings of the Genetic and Evolutionary Computation Conference, GECCO'99, Orlando, Florida, USA, July 1999

Simões, A. and Costa, E. , "Transposition versus Crossover: An Empirical Study", in Proc. of the 1999 Genetic and Evolutionary Computation Conference (GECCO'99), Orlando, USA, July 1999

Barreiros, J. and Costa, E. and Pereira, F. B. , "LamBaDa: An Artificial Environment to Study the", in Proc. of the CEC 1999, In the Proceedings of the 1999 Congress on Evolutionary Computation (CEC 99), USA, July 1999

Simões, A. and Costa, E. , "Enhancing Transposition Performance", in Proc. of the 1999 Congress on Evolutionary Computation (CEC' 99), Washington, USA, July 1999

Silva, A. F. and Silva, A. P. and Costa, E. , "Building Agents with Memory: An Approach using Genetically Programmed Networks", in Proc. of the 1999 Congress on Evolutionary Computation, pp. 1824-1831, CEC 99, Washington, USA, July 1999

Pereira, F. B. and Machado, P. and Costa, E. and Cardoso, A. , "Graph-Based Crossover: A Case Study with the Busy Beaver Problem", in Proc. of the Genetic and Evolutionary Computation Conference (GECCO-99), pp. 1149-1155, Orlando, USA, July 1999

Silva, A. F. and Costa, E. , "Evolving Controllers for Autonomous Agents Using Genetically Programmed Networks", in Proc. of the Second European Workshop on Genetic Programming, EuroGP 99, Goteborg, Sweden, May 1999

Machado, P. and Pereira, F. B. and Cardoso, A. and Costa, E. , "Busy Beaver - The Influence of Representation", European Workshop on Genetic Programming, EuroGP'99, Goteborg, Sweden, May 1999. [Best Paper Award]

Simões, A. and Costa, E. , "Transposition: a Biologically Inspired Mechanism to Use with Genetic Algorithms", in Proc. of the Fourth International Conference on Neural Networks and Genetic Algorithms (ICANNGA'99), ICANNGA, Portoroz, Slovenia, April 1999

Pereira, F. B. and Machado, P. and Costa, E. and Cardoso, A. , "Busy Beaver: an Evolutionary Approach", in Proc. of the CIMAF 99 – II Symposium on Artificial Intelligence, pp. 212-216, Havana, Cuba, March 1999

Simões, A. and Costa, E. , "Using Genetic Algorithms with Asexual Transposition", #CISUC TR 99/03, ISSN 0874-338X, January 1999

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