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View Code? Open in Web Editor NEWA perfomance comparison about a Branch and Bound implementation and Gurobi using a Single Machine Scheduling problem as Use Case.
A perfomance comparison about a Branch and Bound implementation and Gurobi using a Single Machine Scheduling problem as Use Case.
Machine instance will retain a list of ScheduledJob instances. Solvers must work with ScheduledJob Instances. Solution must be calculated using ScheduledJob instances in Machine objects.
wheights must be equal to 1 when calculating a LB for B&B using SPTF scheduler
fixed bug in sptf rule: when there are no released job to process, shortest job must not be processed if it was completed in the previous round
cBnB scheduler doesn't account for weights > 1
When choosing a subschedule for the subproblems, it happens always that the jobs in that schedule does not preempt each other. This results in the final schedule not having preemption, thus leading to a final value always worst than the one obtained, for instance, from SPTF.
Maybe subproblems must be created when a job is released too?
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