“…The powerful and fast computing environment now available has brought many scholars to spatial interaction theory once again, either by utilizing evolutionary computation to breed novel forms of spatial interaction models (see Openshaw, 1988;Turton, Openshaw and Diplock, 1997) or applying neural network theory to spatial interaction, first proposed by Fischer and Gopal (1994) and later extended by many others [including Fischer and Leung, 1998;Bergkvist, 2000;Reggiani and Tritapepe, 2000;Mozolin, Thill and Usery, 2000;Fischer and Reismann, 2002a, b;Fischer, 2000Fischer, , 2002aFischer, Reismann and Hlavackova-Schindler, 2003].…”