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inria-00145172, version 1

Robustness in the long run: Auto-teaching vs Anticipation in Evolutionary Robotics

Nicolas Godzik a1, Marc Schoenauer () a1, Michèle Sebag () b1

Parallel Problem Solving from Nature 3242 (2004) 932-941

Abstract: In Evolutionary Robotics, auto-teaching networks, neural networks that modify their own weights during the life-time of the robot, have been shown to be powerful architectures to develop adaptive controllers. Unfortunately, when run for a longer period of time than that used during evolution, the long-term behavior of such networks can become unpredictable. This paper gives an example of such dangerous behavior, and proposes an alternative solution based on anticipation: as in auto-teaching networks, a secondary network is evolved, but its outputs try to predict the next state of the robot sensors. The weights of the action network are adjusted using some back-propagation procedure based on the errors made by the anticipatory network. First results -- in simulated environments -- show a tremendous increase in robustness of the long-term behavior of the controller.

  • a –  INRIA
  • b –  CNRS
  • 1:  TAO (INRIA Futurs)
  • INRIA – CNRS : UMR8623 – Université Paris XI - Paris Sud
  • Domain : Computer Science/Artificial Intelligence
  • Keywords : Evolutionary Robotics – robustness
 
  • inria-00145172, version 1
  • oai:hal.inria.fr:inria-00145172
  • From: 
  • Submitted on: Wednesday, 9 May 2007 06:41:01
  • Updated on: Wednesday, 9 May 2007 11:44:50
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