$ontext gppL8 pooling problem data. Author: Mohammed Alfaki, Wed Nov 9 15:36:09 2011 $offtext $eolcom # # Declare sets set i / 1*12 /; set s(i) / 1*6 /; set t(i) / 9*12 /; set k / 1*1 /; alias (i,j); # The arc unit cost c_{ij} table c(i,j) 7 8 9 10 11 12 1 6.00 0.00 0.00 0.00 0.00 0.00 2 16.00 0.00 0.00 0.00 0.00 0.00 3 0.00 0.00 1.00 -5.00 4.00 -2.00 4 0.00 3.00 0.00 0.00 0.00 0.00 5 0.00 13.00 0.00 0.00 0.00 0.00 6 0.00 0.00 -2.00 -8.00 1.00 -5.00 7 0.00 0.00 -9.00 -15.00 -6.00 -12.00 8 0.00 0.00 -9.00 -15.00 -6.00 -12.00 ; # The adjacency matrix (the arcs set A) table a(i,j) 7 8 9 10 11 12 1 1 0 0 0 0 0 2 1 0 0 0 0 0 3 0 0 1 1 1 1 4 0 1 0 0 0 0 5 0 1 0 0 0 0 6 0 0 1 1 1 1 7 0 1 1 1 1 1 8 1 0 1 1 1 1 ; # Source qualities/terminal quality upper bounds table q(i,k) 1 1 3.00 2 1.00 3 2.00 4 3.50 5 1.50 6 2.50 9 2.50 10 1.50 11 3.00 12 2.00 ; # Node capacity lower bound parameter bl(i) / 1 0.00 2 0.00 3 0.00 4 0.00 5 0.00 6 0.00 9 0.00 10 0.00 11 0.00 12 0.00 / ; # Node capacity upper bound parameter bu(i) / 1 600.00 2 600.00 3 600.00 4 600.00 5 600.00 6 600.00 7 600.00 8 600.00 9 100.00 10 200.00 11 100.00 12 200.00 / ; $include xmodel.gms