[alife] Recent papers: Swarm Intelligence in Dynamic Landscape

[Titus Brown]

SWARM INTELLIGENCE IN DYNAMIC LANDSCAPES 

ANIMATION 1: http://alfa.ist.utl.pt/~cvrm/staff/vramos/SRSmovie.gif 
ANIMATION 2: http://alfa.ist.utl.pt/~cvrm/staff/vramos/ref_66.html 

INTRO: Swarm Intelligence (SI) is the property of a system whereby the 
collective behaviors of (unsophisticated) entities interacting locally 
with their environment cause coherent functional global patterns to 
emerge. SI provides a basis with wich it is possible to explore 
collective (or distributed) problem solving without centralized control 
or the provision of a global model. To tackle the formation of a 
coherent social collective intelligence from individual behaviors, we 
discuss several concepts related to Self-Organization, Stigmergy and 
Social Foraging in animals. Then, in a more abstract level we suggest 
and stress the role played not only by the environmental media as a 
driving force for societal learning, as well as by positive and 
negative feedbacks produced by the many interactions among agents. 
Finally, presenting a simple model based on the above features, we will 
adress the collective adaptation of a social community to a cultural 
(environmental, contextual) or media informational dynamical landscape, 
represented here - for the purpose of different experiments - by 
several three-dimensional mathematical functions that suddenly change 
over time. Results indicate that the collective intelligence is able to 
cope and quickly adapt to unforseen situations even when over the same 
cooperative foraging period, the community is requested to deal with 
two different and contradictory purposes. Several results stress out 
that the present approach his suitable, among other areas, to hard, 
severe and complex dynamic optimization problems, since the "world" 
upon this ant-like-agents live, changes quite dramaticaly, and yet - as 
a whole - they are able to overcome these changes. 

WORKS: 

[] Vitorino Ramos, Carlos Fernandes, Agostinho C. Rosa, On 
Self-Regulated Swarms, Societal Memory, Speed and Dynamics, in 
Artificial Life X - Proc. of the Tenth Int. Conf. on the Simulation and 
Synthesis of Living Systems, L.M. Rocha, L.S. Yaeger, M.A. Bedau, D. 
Floreano, R.L. Goldstone and A. Vespignani (Eds.), MIT Press, ISBN 
0-262-68162-5, pp. 393-399, Bloomington, Indiana, USA, June 3-7, 2006. 
PDF direct link: http://alfa.ist.utl.pt/~cvrm/staff/vramos/Vramos-AlifeX06.pdf 

[] Vitorino Ramos, Carlos Fernandes, Agostinho C. Rosa, Societal 
Implicit Memory and his Speed on Tracking Extrema over Dynamic 
Environments using Self-Regulatory Swarms, accepted in Journal of 
Systems Architecture, Special issue on Nature Inspired Applied Systems, 
Elsevier, 2006. 
PDF direct link: http://alfa.ist.utl.pt/~cvrm/staff/vramos/Vramos-NIAS06.pdf 

[] Vitorino Ramos, Carlos Fernandes, Agostinho C. Rosa, Social 
Cognitive Maps, Swarm Collective Perception and Distributed Search on 
Dynamic Landscapes, submitted to Brains, Minds & Media, Journal of New 
Media in Neural and Cognitive Science, NRW, Germany, 2006. 
PDF direct link: http://alfa.ist.utl.pt/~cvrm/staff/vramos/Vramos-BMM.pdf 

[] Carlos Fernandes, Vitorino Ramos, Agostinho C. Rosa, Varying the 
Population Size of Artificial Foraging Swarms on Time Varying 
Landscapes, in W. Duch, J. Kacprzyk, E. Oja, S. Zadrozny (Eds.), 
Artificial Neural Networks: Biological Inspirations, Proc. ICANN'05: 
15th Int. Conf., Warsaw, Poland, LNCS series, Vol. 3696, Part I, pp. 
311-316, Springer-Verlag, Sept. 2005. 
PDF direct link: http://alfa.ist.utl.pt/~cvrm/staff/vramos/Vramos-ICANN05.pdf 

[] Vitorino Ramos, Carlos Fernandes and Agostinho C. Rosa, On Ants, 
Bacteria and Dynamic Environments, in NCA-05, Natural Computing and 
Applications Workshop, IEEE Computer Press, Timisoara, Romania, Sep. 
25-29, 2005. 
PDF direct link: http://alfa.ist.utl.pt/~cvrm/staff/vramos/Vramos-NCA05.pdf