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Engineering Time-Expanded Graphs for Faster Timetable Information

Authors Daniel Delling, Thomas Pajor, Dorothea Wagner



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OASIcs.ATMOS.2008.1582.pdf
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Daniel Delling
Thomas Pajor
Dorothea Wagner

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Daniel Delling, Thomas Pajor, and Dorothea Wagner. Engineering Time-Expanded Graphs for Faster Timetable Information. In 8th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems (ATMOS'08). Open Access Series in Informatics (OASIcs), Volume 9, pp. 1-20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2008)
https://doi.org/10.4230/OASIcs.ATMOS.2008.1582

Abstract

We present an extension of the well-known time-expanded approach for timetable information. By remodeling unimportant stations, we are able to obtain faster query times with less space consumption than the original model. Moreover, we show that our extensions harmonize well with speed-up techniques whose adaption to timetable networks is more challenging than one might expect.
Keywords
  • Timetable information
  • shortest path
  • modeling

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