Dataset for the Constraint Programming Model for Assembly Line Balancing and Scheduling with Walking Workers and Parallel Stations

This dataset contains data from the assemblyLine github that have been updated for the Constraint Programming Model for Assembly Line Balancing and Scheduling with Walking Workers and Parallel Stations presented at the conference CP'24. The dataset contains the description of an aircraft assembly project. Operators are considered as one type of resource with capacity speficied in the data file, and each machine is considered as another type of resource of capacity 1. The data items have the following meaning: NStations, Takt : indicative, useful for setting bounds for the decision variables NMaxOpsPerStation : number of available operators for each station. In the walking workers variant, the number of available operators in factory is the sum of operators in this array. NAreas : the number of work zones in the aircraft. NMachines : the number of types of machines. Each machine type is a different resource of capacity 1. NTasks : the number of assembly tasks. Duration : the duration of each tasks. The array has length NTasks. Operators : the number of operators required by each task. The array has length NTasks. UsedAreas : the areas occupied by each task. The array has shape (NTasks, *). UsedMachines : the machines used by each task. The array has length NTasks. Precedences : a list of pairs of task identifiers, where in each pair we have 0 <= i < NTasks, and 0 <= j < NTasks. The index of the task occuring first is i, last is j. AreaCapacities, StationOfMachine, NeutralizedAreas : not used in the paper. To obtain a problem instance, one must also specify a factory layout, as a list of integers specifying the number of workstations per assembly stages.