# Distance Oracles for Time-Dependent Networks

@article{Kontogiannis2015DistanceOF,
title={Distance Oracles for Time-Dependent Networks},
author={Spyros C. Kontogiannis and C. Zaroliagis},
journal={Algorithmica},
year={2015},
volume={74},
pages={1404-1434}
}
• Published 2015
• Mathematics, Computer Science
• Algorithmica
• We present the first approximate distance oracle for sparse directed networks with time-dependent arc-travel-times determined by continuous, piecewise linear, positive functions possessing the FIFO property. Our approach precomputes $$(1+\varepsilon )$$(1+ε)-approximate distance summaries from selected landmark vertices to all other vertices in the network. Our oracle uses subquadratic space and time preprocessing, and provides two sublinear-time query algorithms that deliver constant and (1… CONTINUE READING

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