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Are quality diversity algorithms better at generating stepping stones than objective-based search?

  • The route to the solution of complex design problems often lies through intermediate "stepping stones" which bear little resemblance to the final solution. By greedily following the path of greatest fitness improvement, objective-based search overlooks and discards stepping stones which might be critical to solving the problem. Here, we hypothesize that Quality Diversity (QD) algorithms are a better way to generate stepping stones than objective-based search: by maintaining a large set of solutions which are of high-quality, but phenotypically different, these algorithms collect promising stepping stones while protecting them in their own "ecological niche". To demonstrate the capabilities of QD we revisit the challenge of recreating images produced by user-driven evolution, a classic challenge which spurred work in novelty search and illustrated the limits of objective-based search. We show that QD far outperforms objective-based search in matching user-evolved images. Further, our results suggest some intriguing possibilities for leveraging the diversity of solutions created by QD.

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Metadaten
Document Type:Conference Object
Language:English
Author:Adam Gaier, Alexander Asteroth, Jean-Baptiste Mouret
Parent Title (English):GECCO '19: Genetic and Evolutionary Computation Conference, Prague, Czech Republic, July 13-17, 2019
First Page:115
Last Page:116
ISBN:978-1-4503-6748-6
DOI:https://doi.org/10.1145/3319619.3321897
Publisher:Association for Computing Machinery
Place of publication:New York, NY, United States
Date of first publication:2019/07/13
Copyright:© 2019 Copyright held by the owner/author(s). Abstracting with credit is permitted.
Funding:Funding Sources: Bundesministerium für Bildung und Forschung, Horizon 2020
Keyword:Indirect Encodings; MAP-Elites; Neuroevolution; Quality Diversity
Departments, institutes and facilities:Fachbereich Informatik
Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE)
Projects:AErOMAt - Automatisiertes Entwickeln aerodynamischer Strukturen und Fahrzeuge mithilfe evolutionärer Optimierung und Surrogatmodellierung (DE/BMBF/03FH012PX5,13FH012PX5)
Dewey Decimal Classification (DDC):0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik
Entry in this database:2019/07/13