InterJournal Complex Systems, 1832
Status: Accepted
Manuscript Number: [1832]
Submission Date: 2006
Self-organising text in an amorphous computing environment
Author(s): Orrett Gayle ,Daniel Coore

Subject(s): CX.6



In an amorphous computing environment, myriad irregularly located computing elements asynchronously execute a common program and communicate locally to solve a global problem. We have implemented a mechanism for robustly generating patterns of self-organising text in an amorphous computing environment. Our method uses the Growing Point Language (GPL), presented in [1], and builds on ideas put forward there for constructing text-like patterns. One shortcoming of that technique was that patterns for producing a text character were spatially confined and did not scale well to producing arbitrarily many of them. We have found a way to allow the conditions that govern the formation of a character to propagate arbitrarily far from the starting point, thereby allowing us, in principle, to produce arbitrarily long concatenations of text characters. We have used a pen metaphor, where generating text can be treated in a similar manner as text being drawn on paper, which is done by a series of interconnected strokes. Under this pen metaphor, characters may be combined via the network abstraction in a perfectly natural way to produce words. We have also implemented a serializing mechanism which is used to propagate, along with each character, the information needed to draw the next character. This mechanism permits long strings to be drawn reliably in a manner that scales well with the number of text characters to be drawn. Our simulations have shown that we can produce short strings more reliably than previously, and that we can produce longer strings than ever before. [1] Daniel Coore, "Botanical Computing: A Developmental Approach to Generating Interconnect Topologies on an Amorphous Computer." Ph.D. thesis, Dept. Electrical Engineering and Computer Science, MIT, 1999.

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