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Article overview
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Representation of Shape Mediated by Environmental Stimuli in Physarum polycephalum and a Multi-agent Model | | Jeff Jones
; Richard Mayne
; Andrew Adamatzky
; | | Date: |
18 Nov 2015 | | Abstract: | The slime mould Physarum polycephalum is known to construct proto- plasmic
transport networks which approximate proximity graphs by forag- ing for
nutrients during its plasmodial life cycle stage. In these networks, nodes are
represented by nutrients and edges are represented by proto- plasmic tubes.
These networks have been shown to be efficient in terms of length and
resilience of the overall network to random damage. However relatively little
research has been performed in the potential for Physarum transport networks to
approximate the overall shape of a dataset. In this paper we distinguish
between connectivity and shape of a planar point dataset and demonstrate, using
scoping experiments with plasmodia of P. polycephalum and a multi-agent model
of the organism, how we can gen- erate representations of the external and
internal shapes of a set of points. As with proximity graphs formed by P.
polycephalum, the behaviour of the plasmodium (real and model) is mediated by
environmental stimuli. We further explore potential morphological computation
approaches with the multi-agent model, presenting methods which approximate the
Convex Hull and the Concave Hull. We demonstrate how a growth parameter in the
model can be used to transition between Convex and Concave Hulls. These results
suggest novel mechanisms of morphological computation mediated by environmental
stimuli. | | Source: | arXiv, 1511.5862 | | Services: | Forum | Review | PDF | Favorites | |
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