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Documents authored by Pröger, Tobias

Document
DOI: 10.4230/OASIcs.ATMOS.2015.68
Robust Routing in Urban Public Transportation: Evaluating Strategies that Learn From the Past

Authors: Katerina Böhmová, Matúš Mihalák, Peggy Neubert, Tobias Pröger, and Peter Widmayer

Published in: OASIcs, Volume 48, 15th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (ATMOS 2015)

Abstract
Given an urban public transportation network and historic delay information, we consider the problem of computing reliable journeys. We propose new algorithms based on our recently presented solution concept (Böhmová et al., ATMOS 2013), and perform an experimental evaluation using real-world delay data from Zürich, Switzerland. We compare these methods to natural approaches as well as to our recently proposed method which can also be used to measure typicality of past observations. Moreover, we demonstrate how this measure relates to the predictive quality of the individual methods. In particular, if the past observations are typical, then the learning- based methods are able to produce solutions that perform well on typical days, even in the presence of large delays.
Cite as

Katerina Böhmová, Matúš Mihalák, Peggy Neubert, Tobias Pröger, and Peter Widmayer. Robust Routing in Urban Public Transportation: Evaluating Strategies that Learn From the Past. In 15th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (ATMOS 2015). Open Access Series in Informatics (OASIcs), Volume 48, pp. 68-81, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{bohmova_et_al:OASIcs.ATMOS.2015.68,
  author =	{B\"{o}hmov\'{a}, Katerina and Mihal\'{a}k, Mat\'{u}\v{s} and Neubert, Peggy and Pr\"{o}ger, Tobias and Widmayer, Peter},
  title =	{{Robust Routing in Urban Public Transportation: Evaluating Strategies that Learn From the Past}},
  booktitle =	{15th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (ATMOS 2015)},
  pages =	{68--81},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-99-6},
  ISSN =	{2190-6807},
  year =	{2015},
  volume =	{48},
  editor =	{Italiano, Giuseppe F. and Schmidt, Marie},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.ATMOS.2015.68},
  URN =		{urn:nbn:de:0030-drops-54542},
  doi =		{10.4230/OASIcs.ATMOS.2015.68},
  annote =	{Keywords: public transportation, route planning, robustness, optimization, experiments}
}
Document
DOI: 10.4230/OASIcs.ATMOS.2013.27
Robust Routing in Urban Public Transportation: How to Find Reliable Journeys Based on Past Observations

Authors: Katerina Böhmová, Matús Mihalák, Tobias Pröger, Rastislav Srámek, and Peter Widmayer

Published in: OASIcs, Volume 33, 13th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (2013)

Abstract
We study the problem of robust routing in urban public transportation networks. In order to propose solutions that are robust for typical delays, we assume that we have past observations of real traffic situations available. In particular, we assume that we have "daily records" containing the observed travel times in the whole network for a few past days. We introduce a new concept to express a solution that is feasible in any record of a given public transportation network. We adapt the method of Buhmann et al. [Buhmann et al., ITCS 2013] for optimization under uncertainty, and develop algorithms that allow its application for finding a robust journey from a given source to a given destination. The performance of the algorithms and the quality of the predicted journey are evaluated in a preliminary experimental study. We furthermore introduce a measure of reliability of a given journey, and develop algorithms for its computation. The robust routing concepts presented in this work are suited specially for public transportation networks of large cities that lack clear hierarchical structure and contain services that run with high frequencies.
Cite as

Katerina Böhmová, Matús Mihalák, Tobias Pröger, Rastislav Srámek, and Peter Widmayer. Robust Routing in Urban Public Transportation: How to Find Reliable Journeys Based on Past Observations. In 13th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems. Open Access Series in Informatics (OASIcs), Volume 33, pp. 27-41, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2013)

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@InProceedings{bohmova_et_al:OASIcs.ATMOS.2013.27,
  author =	{B\"{o}hmov\'{a}, Katerina and Mihal\'{a}k, Mat\'{u}s and Pr\"{o}ger, Tobias and Sr\'{a}mek, Rastislav and Widmayer, Peter},
  title =	{{Robust Routing in Urban Public Transportation: How to Find Reliable Journeys Based on Past Observations}},
  booktitle =	{13th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems},
  pages =	{27--41},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-58-3},
  ISSN =	{2190-6807},
  year =	{2013},
  volume =	{33},
  editor =	{Frigioni, Daniele and Stiller, Sebastian},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.ATMOS.2013.27},
  URN =		{urn:nbn:de:0030-drops-42428},
  doi =		{10.4230/OASIcs.ATMOS.2013.27},
  annote =	{Keywords: Algorithms, Optimization, Robustness, Route planning, Public transportation}
}
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