GAMS World Forum

Hi, i have used GAMS to solve my MIP models using branch and bound solver in the past. Recently, i have been trying my hands on heuristic techniques like Genetic Programming, Tabu search etc. Has anyone any idea how those heuristic algorithms can be executed in GAMS. Since i am a beginner in this pa...

My query is regarding an extension of this post. three summation operators i,j,k are sequential as in Sigma_i[Sigma_j{Sigma_k (expression)}]. i and j are sets with elements say /1*4/ each. k is supposed to be /0*(i-j)/ for every value of i and j. For instance, if i=3, j=2 then k is /0*1/ and when i ...

Hi Jessica, in GAMS you would need to probably define sets for i and t. If they need to be adjacent you should probably check ordered sets. Also you should go through indexed mapping one set on other to incorporate d(i,t) type of variable. https://www.gams.com/latest/docs/userguides/userguide/_u_g__...

It works. Thankyou Fred.

Dear all, i am trying to plot the two and three axes charts of my sensitivity analysis by using gnuplotxyz. i have downloaded gnuplot from the referred link and have installed it in the 'projdir' where all my .gms codes and files are stored. I tried running the example code on the link "https:/...