GAMS World Forum

Hi Ranger, I have tried the guide you gave me. It did not work. It seems the analysis works only on parameters not on sets. I need a way to manipulate these sets in order to achieve the desired result. I have tried to manipulate from the equations but to no avail because the domain will become meani...

Thanks renger, you have been of great help to me. Though I have not finished working on your guide but it proved helpful.

Good day, please I need help to establish relationship between sets but I don't know how to go about it. It's a job scheduling problem. An example is shown below. Sets j Current job /j1*j10/ h last job before the current /h1*h10/ I want that, if job 6 is the current job and job 2 was the last one, ...

Good day, please I need help to establish relationship between sets but I don't know how to go about it. It's a job scheduling problem. An example is shown below. Sets j Current job /j1*j10/ h last job before the current /h1*h10/ I want to establish a relationship between h and j such a the relation...

Thanks very much for your support. I really do appreciate it. The large postive value AM had not been taken care of. Please can you help me do that.
Thanks.

Good day, please I need help to write this equation in GAMS. They are constraints of scheduling for unrelated parallel machine problems. C_j-AM(1-X_ijk )≥S_hj+∑_o▒〖X_ijo P_ij 〗+C_h+V_j ∀ h,j,i,k>1,h≠j And A_j≥C_h+V_j+AM(2-X_ijk-X_(ih(k-1)) ) ∀ h, j, k, i>1 ,h≠j The first constraint can be written in...