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Author Kirchler, Dominik ♦ Liberti, Leo ♦ Calvo, Roberto Wolfler
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Copyright Year ©2014
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Computer programming, programs & data
Subject Keyword ALT ♦ Constrained shortest paths ♦ Multimodal ♦ Regular languages ♦ Shortest path
Abstract We consider shortest paths on time-dependent multimodal transportation networks in which restrictions or preferences on the use of certain modes of transportation may arise. We model restrictions and preferences by means of regular languages. Methods for solving the corresponding problem (called the regular language constrained shortest path problem) already exist. We propose a new algorithm, called State Dependent ALT (SDALT), which runs considerably faster in many scenarios. Speed-up magnitude depends on the type of constraints. We present different versions of SDALT, including unidirectional and bidirectional search. We also provide extensive experimental results on realistic multimodal transportation networks.
ISSN 10846654
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-01-07
Publisher Place New York
e-ISSN 10846654
Journal Journal of Experimental Algorithmics (JEA)
Volume Number 19
Page Count 29
Starting Page 1
Ending Page 29


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Source: ACM Digital Library