On the Emergence of Novel Behaviours From Complex Non Linear Systems

Authors:
Lorenzo Riano;T. M. McGinnity
Affiliations:
Intelligent Systems Research Centre, School of Computing and Intelligent Systems, University of Ulster, Magee Campus, Londonderry, BT48 7JL;Intelligent Systems Research Centre, School of Computing and Intelligent Systems, University of Ulster, Magee Campus, Londonderry, BT48 7JL
Venue:
Proceedings of the 2010 conference on Biologically Inspired Cognitive Architectures 2010: Proceedings of the First Annual Meeting of the BICA Society
Year:
2010

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Abstract

Emergent behaviours are believed to be a property of complex cognitive architectures. However it is difficult to observe them in carefully engineered systems. We believe that, in order to obtain interesting and surprising behaviours, the designer has to remove some predictability requirements. To explore this we studied how the complexity, defined according to the Kolmogorov theory, is linked to truly emergent behaviours. This study has been conducted on a real robot driven by the non-linear dynamics of a recurrent neural network created using evolutionary approaches. In several experiments we found that, while a simple network is equivalent to a deterministic automata, networks of increasing complexity exhibit novel behaviours. This is due to a spontaneous background activity of the neurons which can be sustained only by a complex network. These results support the idea that in a non predictable architecture novel and surprising cognitive capabilities emerge in a natural way.