Authors
Joel Lehman, Kenneth O Stanley
Publication date
2011/7/12
Book
Proceedings of the 13th annual conference on Genetic and evolutionary computation
Pages
211-218
Description
An ambitious challenge in artificial life is to craft an evolutionary process that discovers a wide diversity of well-adapted virtual creatures within a single run. Unlike in nature, evolving creatures in virtual worlds tend to converge to a single morphology because selection therein greedily rewards the morphology that is easiest to exploit. However, novelty search, a technique that explicitly rewards diverging, can potentially mitigate such convergence. Thus in this paper an existing creature evolution platform is extended with multi-objective search that balances drives for both novelty and performance. However, there are different ways to combine performance-driven search and novelty search. The suggested approach is to provide evolution with both a novelty objective that encourages diverse morphologies and a local competition objective that rewards individuals outperforming those most similar in morphology. The …
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Scholar articles
J Lehman, KO Stanley - Proceedings of the 13th annual conference on Genetic …, 2011