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Rule Migration: Exploring a Design Framework for Emergence
Heather R. Turner, Susan Stepney and Fiona A. C. Polack

We propose a framework for engineering emergent behaviour that allows system specification and design at the level of the emergence. We discuss how rule migration can be used to translate this high-level multi-layer design (mobile process model) into an equivalent simple cellular automaton model with only local rules, and emergent behaviour. In this paper, we use a case study in 2D to illustrate the process involved in deriving a migration rule for a simple random walk. We discuss how the mobile process architecture may be extended to model systems with multiple levels of emergence.

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