|Title||Maximising the Net Present Value of Project Schedules Using CMSA and Parallel ACO|
|Publication Type||Conference Paper|
|Year of Publication||2019|
|Authors||Thiruvady D, Blum C, Ernst AT|
|Conference Name||International Workshop on Hybrid Metaheuristics (HM 2019)|
This study considers the problem of resource constrained project scheduling to maximise the net present value. A number of tasks must be scheduled within a fixed time horizon. Tasks may have precedences between them and they use a number of common resources when executing. For each resource, there is a limit, and the cumulative resource requirements of all tasks executing at the same time must not exceed the limits. To solve this problem, we develop a hybrid of Construct, Merge, Solve and Adapt (CMSA) and Ant Colony Optimisation (ACO). The methods are implemented in a parallel setting within a multi-core shared memory architecture. The results show that the proposed algorithm outperforms the previous state-of-the-art method, a hybrid of Lagrangian relaxation and ACO.
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