Abstract

How does an evolutionary process interact with a decentralized, distributed system in order to produce globally coordinated behavior? Using a genetic algorithm (GA) to evolve cellular automata (CAs), we show that the evolution of spontaneous synchronization, one type of emergent coordination, takes advantage of the underlying medium's potential to form embedded particles. The particles, typically phase defects between synchronous regions, are designed by the evolutionary process to resolve frustrations in the global phase. We describe in detail one typical solution discovered by the GA, delineating the discovered synchronization algorithm in terms of embedded particles and their interactions. We also use the particle-level description to analyze the evolutionary sequence by which this solution was discovered. Our results have implications both for understanding emergent collective behavior in natural systems and for the automatic programming of decentralized spatially extended multiprocessor systems.

Keywords

Cellular automatonComputer scienceSynchronization (alternating current)Distributed computingProcess (computing)Genetic programmingAutomatonMultiprocessingSequence (biology)Phase (matter)Theoretical computer scienceArtificial intelligenceParallel computingPhysicsProgramming language

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Publication Info

Year
1995
Type
article
Pages
336-343
Citations
139
Access
Closed

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Rajarshi Das, James P. Crutchfield, Melanie Mitchell et al. (1995). Evolving Globally Synchronized Cellular Automata. PDXScholar (Portland State University) , 336-343.