Parallel PLL on DAGs

We present a parallel variant of Pruned Landmark Labelling (PLL) that is optimised for the preprocessing of hub labels on directed acyclic graphs (DAGs). This method was developed during a seminar at the Karlsruhe Institute of Technology (KIT), focusing on time-expanded graphs that model public transport networks. The approach leverages the topological properties of DAGs to enable a novel parallel construction of hub labels.