School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au|School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au|School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au|School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au|School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au|School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au|School of Information Technology and Mathematical Sciences, University of South Australia, Mawson Lakes, South Australia 5095. thuc_duy.le@mymail.unisa.edu.au