Aluminium alloys provide an excellent combination of mechanical and physical properties such as high stiffness and low density, which make it an obvious choice their for many structural applications. The increasing demand for stronger and lighter structural materials such as aluminium alloy is the driving force for the need to adequately understand its deformation and mechanical properties under different loading conditions. Hot deformation characteristics of AA5083 aluminium alloy have been studied in the temperature range of 350-400 C and strain rate range 0.001-0.1 s-1 using dilatometer hot compression tests. An empirical model is developed which is consequently used to search for the optimal deformation conditions using particle swarm optimisation algorithm.