Originally posted by: NguyenHuuTRi

Hi,

I have got stucked in reducing from 4-dimensional array to 2-dimensional array by using sparsity. I would much appreciate it if you could help assist me in exploring this method as I am a new user of CPLEX.

I am attaching my model for your information.

Thanks very much.

Regards

Hi,

have you had a look at

http://kstec.co.kr/products/optimization/WP-OPL-CPLEXDevSystemModeling.pdf

?

do you have a real business problem in mind or just for research ?

regards

Originally posted by: NguyenHuuTRi

Hi,

I am doing the timetabling for my university and I wonder if I can decompose the decision variables into smaller parts so that I can reduce the number of variables and make my model works.

Thanks & regards,