Thanks a lot Ian. Your post helped me understand the problem in a much better
way and I've solved the first objective thanks to you but incase of my second
objective which is minimize the number of nodes, I have got one of the weirdest
looking constraints which I don't know how to express in Python because python
basically takes matrices and inputs them into cplex. My constraint is as below.
Thsi was what I wrote in AMPL
minimize phy_nodes: sum {w in PHY_NODES} x_ns[w] ;
s.t. Phy_nodes_Eq{w in PHY_NODES, dns in DEMAND}:
x_ns[w] = 1 ==> x_SGW[dns, w] + x_PGW[dns, w] + x_MME[dns, w] + x_IMS[dns, w] +
x_PoP[dns, w] >= 1
else x_SGW[dns, w] + x_PGW[dns, w] + x_MME[dns, w] + x_IMS[dns, w] + x_PoP[dns,
w] = 0;
Could you help me fix this problem?
--
https://mail.python.org/mailman/listinfo/python-list
