This book constitutes the refereed proceedings of the 4th Australian Conference on Artificial
Life ACAL 2009 held in Melbourne Australia in December 2009. The 27 revised full papers
presented were carefully reviewed and selected from 60 submissions. Research in Alife covers
the main areas of biological behaviour as a metaphor for computational models computational
models that reproduce duplicate a biological behaviour and computational models to solve
biological problems. Thus Alife features analyses and understanding of life and nature and
helps modeling biological systems or solving biological problems. The papers are organized in
topical sections on alife art game theory evolution complex systems biological systems
social modelling swarm intelligence and heuristics.
