On Ants, Bacteria and Dynamic Environments
Vitorino RAMOS
Bacteria and Dynamic Environments, in NCA-05, Natural Computing and
Applications Workshop, IEEE Computer Press, Timisoara, Romania, Sep.
25-29, 2005.
PDF: http://alfa.ist.utl.pt/~cvrm/staff/vramos/Vramos-NCA05.pdf
ABSTRACT: Wasps, bees, ants and termites all make effective use of
their environment and resources by displaying collective "swarm"
intelligence. Termite colonies - for instance - build nests with a
complexity far beyond the comprehension of the individual termite,
while ant colonies dynamically allocate labor to various vital tasks
such as foraging or defense without any central decision-making
ability. Recent research suggests that microbial life can be even
richer: highly social, intricately networked, and teeming with
interactions, as found in bacteria. What strikes from these
observations is that both ant colonies and bacteria have similar
natural mechanisms based on Stigmergy and Self-Organization in order to
emerge coherent and sophisticated patterns of global behaviour. Keeping
in mind the above characteristics we will present a simple model to
tackle the collective adaptation of a social swarm based on real ant
colony behaviors (SSA algorithm) for tracking extrema in dynamic
environments and highly multimodal complex functions described in the
well-know De Jong test suite. Then, for the purpose of comparison, a
recent model of artificial bacterial foraging (BFOA algorithm) based on
similar stigmergic features is described and analyzed. Final results
indicate that the SSA collective intelligence is able to cope and
quickly adapt to unforeseen situations even when over the same
cooperative foraging period, the community is requested to deal with
two different and contradictory purposes, while outperforming BFOA in
adaptive speed.
[ comp.ai is moderated ... your article may take a while to appear. ]
Kent Paul Dolan
[five new papers announced and a GIF movie included]
Thanks for all the new Swarm Intelligence goodies to
read, Vitorino; you've surely been busy recently.
xanthian.
Vitorino RAMOS
Dear Xanthian.
Many thanks for your support and kind words. Indeed, I would love to
see around here as many links to online works (papers, book chapters,
journal articles) available as possible. We would all enhance our
research with them. Finally - as usual-, any critics are wellcome.
Grettings, vitorino
Edmond Dantes
Most interesting.
--
-- Edmond Dantes, CMC
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