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Advance Program Now Available Genetic and Evolutionary Computation Conference 2007 Conference Program Table of Contents GECCO is evolving! 1 Program Outline 2 Instructions for Paper and Poster Presenters 3 Organizers 4 Program Committee 6 Papers Nominated for Best Paper Awards 11 Human-Competitive Results Awards 14 Evolutionary Computation in Practice 15 Competitions 15 Tutorials and Workshops Schedule 16 Paper Presentation Sessions At-A-Glance 18 Monday Paper and Poster Presentations 20 Monday Keynote Debate 36 Tuesday Paper and Poster Presentations 40 Wednesday Paper Presentations 58 ACM and SIGEVO Membership 71 UCL Campus Maps and Directions 73—74 GECCO is sponsored by the Association for Computing Machinery Special Interest Group on Genetic and Evolutionary Computation (SIGEVO). SIG Services: 2 Penn Plaza, Suite 701, New York, NY, 10121, USA, 1-800-342-6626 (USA and Canada) or +212-626-0500 (Global). gc-cfp-wm-07x1 8 November 06 Sponsor and Supporters We gratefully acknowledge and thank our Supporters. ACM SIGEVO Association for Computing Machinery GECCO 2007 is Special Interest Group on Sponsored By: Genetic and Evolutionary Computation Conference Venue University College London Supporter: The Science Department Keynote Supporter: Of the Natural History Museum Competition Quantdesk Ltd Supporter: Student Travel Grant Supporters Tiger Mountain Scientific, Inc. GECCO is evolving! Welcome to GECCO 2007! I would like to take this opportunity to welcome you, thank all those who have participated to create the current GECCO, and tell you what’s new this year. This year represents a major transition in GECCO’s evolution. There has been a growing view that for GECCO to maintain its place as the leading conference in the field of evolutionary computation it should globalize and be held also outside the United States. Concerns about participation levels were quickly mitigated as this year GECCO had a record number of submissions. Thanks to all of you for making this transition a success. This is also the first time that GECCO is held in an academic venue, rather than a hotel. I hope that this change of atmosphere will prove to be valuable and engaging. Being at the location of Charles Darwin’s home provides an additional historical sense to all our activities. I would like to thank University College London for their hospitality, and especially Local Chair Peter Bentley for his hard work in making this possible. As in any year, GECCO is adapting. We have added two new tracks (Theory track and Generative and Developmental Systems track), and consolidated or removed others. New tracks usually emerge out of successful workshops, and some tracks are removed due to decreasing interest. Similarly, workshops and tutorials are subject to variation and selection. Many thanks to Editor in Chief Dirk Thierens who has seen this complex process through, as well as Anikó Ekárt and Tina Yu who have maintained a lively breadth of workshops and tutorials. We are also experimenting with a new poster presentation format. Rather than exhibit all posters simultaneously in one overwhelming evening, posters will be displayed across coffee breaks and lunches, as well as at the keynote evening. I hope that this format will allow more exposure for posters and more time to be seen and digested. This year’s highlight will be the keynote event. Professors Richard Dawkins, Steve Jones and Lewis Wolpert will take part in a public debate, discussing the emergence of complexity in evolution. Unlike traditional keynotes speeches, I hope that this format will provide us a unique opportunity to interact, learn and challenge some of the greatest minds in evolutionary biology. Thanks to the Science Department of the Natural History Museum for making this possible. Last but not least, let me thank GECCO administrator Pat Cattolico whose continued involvement with GECCO has proven to be an invaluable asset, and without which GECCO could now never happen. Remember that GECCO is continuously evolving: New tracks, workshops and tutorials, new presentation formats and new organizational styles. Some of these changes work better than others, and your input is critical in maintaining progress. Please let us know your opinions, what worked and what didn’t, and how can things be improved next year. Enjoy the Conference! Hod Lipson Conference Chair GECCO 2007 University College London Page 1 Program Outline GECCO tutorial, workshop, and paper presentation sessions take place in 3 UCL buildings: Darwin, Roberts, and Malet Place. Poster session take place in the foyers of Roberts and Malet Place, and at the Museum of Natural History. The Registration and Help Desk is located in the South Cloisters. Campus maps and directions are on pages 73–74. Saturday, July 7 and Sunday, July 8 7:00 – 17:00 Registration Desk Open Hours 8:00 – 18:00 Workshops and Tutorials Monday, July 9 7:00 – 14:30 Registration Desk Open Hours 8:30 – 10:10 Paper Presentations 10:10 – 10:40 Poster session (Roberts and Malet Place Foyers) and Coffee Break (South Cloisters) 10:40 – 12:20 Paper Presentations 12:20- –14:00 Lunch on your own 14:00 – 15:40 Paper Presentations 19:00 – 23:00 Keynote Debate at the Natural History Museum: Professors Richard Dawkins, Steve Jones and Lewis Wolpert take part in a public debate, discussing the emergence of complexity in evolution. This is a once-in-a-lifetime opportunity to hear and interact with some of the most famous names in evolutionary biology. The Museum opens for the Debate at 19:00. The evening begins with a drinks and nibbles reception. The debate takes place from 20:00 to 21:00. The bar reopens after the debate for the poster session. The Debate is supported by the Natural History Museum. Tuesday, July 10 7:30 –16:30 Registration Desk Open Hours 8:30 – 10:10 Paper Presentations 10:10 – 10:40 Poster session (Roberts and Malet Place Foyers) and Coffee Break (South Cloisters) 10:40 – 12:20 Paper Presentations 12:20- –14:00 Lunch on your own 14:00 – 15:40 Paper Presentations 15:40 – 16:10 Poster session (Roberts and Malet Place Foyers) and Coffee Break (South Cloisters) 16:30 Deadline: Best Paper Ballots (deposit at Registration Desk) 16:10 – 17:50 Paper Presentations Wednesday, July 11 8:00 – 12:30 Registration Desk Open Hours 8:30 – 10:10 Paper Presentations 10:10 – 10:40 Coffee Break (South Cloisters) 10:40 – 12:20 Paper Presentations 12:20- –14:00 Lunch on your own 14:00 – 15:40 Paper Presentations 15:40 – 16:10 Coffee Break (South Cloisters) 16:10 – 17:50 Paper Presentations Page 2 GECCO 2007 University College London Instructions for Paper and Poster Presenters Instructions for Paper Presentations GECCO will provide an LCD projector in each meeting room. Presenters must bring their own laptop, or arrange to use a laptop for your presentation. Speakers presenting papers are allotted the following presentations time. If a session is without a chair, we ask the last scheduled speaker to perform those duties. Speakers presenting accepted papers during the technical sessions are allocated 25 minutes for each presentation, 20 minutes for set up and presentation, followed by 5 minutes for questions. Speakers in the late breaking papers sessions are allocated 15 minutes for each presentation, 10 minutes for set up and presentation, followed by 5 minutes for questions. Instructions for Session Chairs Keep the session on schedule: Please adhere to the scheduled order of talks, as well as presentation times. If a speaker is absent, we ask you to announce a short break until the next presentation is due to start. Do not start early, as participants may be moving between sessions/presentations. Introduce each speaker Moderate questions Arrive a few minutes early to check on room and equipment set-up. Please let conference organizers know immediately if problems arise or adjustments are needed. Instructions for Poster Presenters Morning Coffee Break: Poster authors scheduled for posters during morning coffee breaks should set up their poster on a poster board in the Roberts or Malet Place Foyers by 8:00, and remove their poster after the second morning session, by 13:00. Afternoon Coffee Break: Poster authors scheduled for posters during afternoon coffee breaks should set up their poster on a poster board in the Roberts or Malet Place Foyers after the second morning session, by 13:00, and remove their poster after the second afternoon session. Natural History Museum: Poster authors scheduled for posters during the Keynote Debate at the Natural History Museum will be permitted to enter the museum on Monday evening 9 July at 18:45. No poster authors will be admitted before 18:45. Only one poster author per poster will be admitted to the Museum at 18:45. Your event ticket and conference badge are required for entry. Help Meeting Room MAPS and DIRECTIONS: inside the back cover: pages 73—74. General enquiries during conference hours: Projector / computer / internet difficulties GECCO registration desk: Tech support: 0794 8514101 (or +44 794 8514101) 0794 8514099 (or +44 794 8514099) GECCO 2007 University College London Page 3 GECCO-2007 Organizers Conference Chair: Hod Lipson (Cornell University, USA) Proceedings Editor-in-Chief: Dirk Thierens (Universiteit Utrecht, The Netherlands) Business Committee: David E. Goldberg (University of Illinois at Urbana-Champaign, USA) John R. Koza (Stanford University, USA) Publicity and Local Arrangements Chair: Peter J. Bentley (University College London, UK) Tutorials Chair: Anikó Ekárt (Aston University, UK) Workshops Chair: Tina Yu (Memorial University of Newfoundland,
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