| 2003 | Cooperative Evolution on the Intertwined Spirals Problem. | Terence Soule |
| 2003 | Feature Construction and Selection Using Genetic Programming and a Genetic Algorithm. | Matthew Goble Smith, Larry Bull |
| 2003 | From Implementations to a General Concept of Evolvable Machines. | Luks Sekanina |
| 2003 | Research of a Cellular Automaton Simulating Logic Gates by Evolutionary Algorithms. | Emmanuel Sapin, Olivier Bailleux, Jean-Jacques Chabrier |
| 2003 | An Analysis of Diversity of Constants of Genetic Programming. | Conor Ryan, Maarten Keijzer |
| 2003 | Sensible Initialisation in Chorus. | Conor Ryan, R. Muhammad Atif Azad |
| 2003 | Divide and Conquer: Genetic Programming Based on Multiple Branches Encoding. | Katya Rodrguez-Vzquez, Carlos Oliver-Morales |
| 2003 | A Simple but Theoretically-Motivated Method to Control Bloat in Genetic Programming. | Riccardo Poli |
| 2003 | Genetic Programming with Boosting for Ambiguities in Regression Problems. | Grgory Paris, Denis Robilliard, Cyril Fonlupt |
| 2003 | Genetic Programming for Attribute Construction in Data Mining. | Fernando E. B. Otero, Monique M. S. Silva, Alex Alves Freitas, Jlio C. Nievola |
| 2003 | Analysis of a Digit Concatenation Approach to Constant Creation. | Michael O'Neill, Ian Dempsey, Anthony Brabazon, Conor Ryan |
| 2003 | More on Computational Effort Statistics for Genetic Programming. | Jens Niehaus, Wolfgang Banzhaf |
| 2003 | How Functional Dependency Adapts to Salience Hierarchy in the GAuGE System. | Miguel Nicolau, Conor Ryan |
| 2003 | Reducing Population Size while Maintaining Diversity. | Patrick Monsieurs, Eddy Flerackers |
| 2003 | Evolutionary Optimized Mold Temperature Control Strategies Using a Multi-polyline Approach. | Jrn Mehnen, Thomas Michelitsch, Klaus Weinert |
| 2003 | Introducing a Perl Genetic Programming System - and Can Meta-evolution Solve the Bloat Problem? | Robert M. MacCallum |
| 2003 | Evolving Finite State Transducers: Some Initial Explorations. | Simon M. Lucas |
| 2003 | Genetic Programming with Meta-search: Searching for a Successful Population within the Classification Domain. | Thomas Loveard |
| 2003 | Parallel Programs Are More Evolvable than Sequential Programs. | Kwong-Sak Leung, Kin-Hong Lee, Sin Man Cheang |
| 2003 | Interactive GP for Data Retrieval in Medical Databases. | Yann Landrin-Schweitzer, Pierre Collet, Evelyne Lutton |
| 2003 | Grammatical Evolution with Bidirectional Representation. | Jir Kubalk, Jan Koutnk, Lon J. M. Rothkrantz |
| 2003 | Evolving Hierarchical and Recursive Teleo-reactive Programs through Genetic Programming. | Mykel J. Kochenderfer |
| 2003 | Improving Symbolic Regression with Interval Arithmetic and Linear Scaling. | Maarten Keijzer |
| 2003 | Artificial Immune System Programming for Symbolic Regression. | Colin G. Johnson |
| 2003 | Tree Adjoining Grammars, Language Bias, and Genetic Programming. | Nguyen Xuan Hoai, Robert I. McKay, Hussein A. Abbass |