problem with two level

GAMS
1

Hello Everyone,

I am trying to solve a problem which has two levels. Decision variables in both levels are interacting with each other i.e. decision variable of one level is treated as a parameter for other level and vice-versa. I am solving it individually and feeding output of one level to others. This would be done till an equilibrium exist. After first loop (iteration), I can’t see any variations in the value of decision variables.

Can anyone suggest me what is wrong with this?

For example

first level
decision variables are x, Ps, Pb
Constants - a, b kk, kk1
Max Sum(t, z)
z= xy-c
c=Psa+Pbb
subject to constraints
kk<x<kk1
other constraints

Second Level
Min sum(t, xy)
decision variables are - y
constant k, k1
subject to constraints
k<y<k1

Thank You.

2

Hi

Mohammed Ali:

Silence is golden when you can’t think of a good answer

my humble addition:

…because the user is not complying with the forum > rules> .


Cheers
Renger

3

Renger Sir,

Thank you.