Originally posted by: PJ3C_gao_lianxing

I use c#.net to implement a schedule problem.
I don't know how to express Semantics in c#.net

INumVar[] endTime[r] = cplex.NumVar(0.0, System.Double.MaxValue);

how to write the objective function:minimize the max 'endTime' in all endTime[r](r=0...R)?

Thank you for replying.
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Originally posted by: SystemAdmin

You can achieve that by the following:
1. create a new variable y,
2. add constraints that force y to be larger than or equal to all the endTime variables,
3. call cplex.addMinimize(y) to create the object function.
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Originally posted by: SystemAdmin

What you want to do is a classical application for constraint programming, so you should try CP Optimizer to solve it. Namely, you want to minimize the makespan of a scheduling problem.

I do not have a CPLEX Optimization Studio installation in front of me, but I am pretty sure that there should be a makespan minimization OPL example in the distribution. You need to search the CP examples.
Tobias
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