Corpus ID: 17849805

Computing Point-to-Point Shortest Paths from External Memory

@inproceedings{Goldberg2005ComputingPS,
  title={Computing Point-to-Point Shortest Paths from External Memory},
  author={A. Goldberg and Renato F. Werneck},
  booktitle={ALENEX/ANALCO},
  year={2005}
}

A. Goldberg, Renato F. Werneck

Published in ALENEX/ANALCO 2005

Computer Science

We study the ALT algorithm [19] for the point-to-point shortest path problem in the context of road networks. We suggest improvements to the algorithm itself and to its preprocessing stage. We also develop a memory-efficient implementation of the algorithm that runs on a Pocket PC. It stores graph data in a flash memory card and uses RAM to store information only for the part of the graph visited by the current shortest path computation. The implementation works even on very large graphs… CONTINUE READING

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