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Finding time-dependent shortest paths over large graphs

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Lu QinAuthors Info & Claims

EDBT '08: Proceedings of the 11th international conference on Extending database technology: Advances in database technology

Pages 205 - 216

https://doi.org/10.1145/1353343.1353371

Published: 25 March 2008 Publication History

Abstract

The spatial and temporal databases have been studied widely and intensively over years. In this paper, we study how to answer queries of finding the best departure time that minimizes the total travel time from a place to another, over a road network, where the traffic conditions dynamically change from time to time. We study a generalized form of this problem, called the time-dependent shortest-path problem. A time-dependent graph G_T is a graph that has an edge-delay function, w_{i, j}(t), associated with each edge (v_i, v_j), to be stored in a database. The edge-delay function w_{i, j}(t) specifies how much time it takes to travel from node v_i to node v_j, if it departs from v_i at time t. A user-specified query is to ask the minimum-travel-time path, from a source node, v_s, to a destination node, v_e, over the time-dependent graph, G_T, with the best departure time to be selected from a time interval T. We denote this user query as LTT(v_s, v_e, T) over G_T. The challenge of this problem is the added complexity due to the time dependency in the time-dependent graph. That is, edge delays are not constants, and can vary from time to time. In this paper, we propose a novel algorithm to find the minimum-travel-time path with the best departure time for a LTT(v_s, v_e, T) query over a large graph G_T. Our approach outperforms existing algorithms in terms of both time complexity in theory and efficiency in practice. We will discuss the design of our algorithm, together with its correctness and complexity. We conducted extensive experimental studies over large graphs and will report our findings.

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https://dl.acm.org/doi/10.1145/3685767.3685769
Sui HYan HZheng THuang WZhuang YLi Y(2024)Congestion-aware Spatio-Temporal Graph Convolutional Network-based A* Search Algorithm for Fastest Route SearchACM Transactions on Knowledge Discovery from Data10.1145/365764018:7(1-19)Online publication date: 19-Jun-2024
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Finding time-dependent shortest paths over large graphs

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cover image ACM Other conferences

EDBT '08: Proceedings of the 11th international conference on Extending database technology: Advances in database technology

March 2008

762 pages

ISBN:9781595939265

DOI:10.1145/1353343

Conference Chair:
Noureddine Mouaddib,
General Chair:
Patrick Valduriez,
Program Chairs:
Alfons Kemper
Technische Universität München, Germany
,
Mokrane Bouzeghoub,
Volker Markl,
Laurent Amsaleg,
Ioana Manolescu,
Publications Chair:
Jens Teubner

Copyright © 2008 ACM.

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Association for Computing Machinery

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Publication History

Published: 25 March 2008

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Research Grants Council, University Grants Committee, Hong Kong

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EDBT '08

EDBT '08: 11th International Conference on Extending Database Technology

March 25 - 29, 2008

Nantes, France

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Overall Acceptance Rate 7 of 10 submissions, 70%

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Cited By

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https://dl.acm.org/doi/10.1145/3685767.3685769
Sui HYan HZheng THuang WZhuang YLi Y(2024)Congestion-aware Spatio-Temporal Graph Convolutional Network-based A* Search Algorithm for Fastest Route SearchACM Transactions on Knowledge Discovery from Data10.1145/365764018:7(1-19)Online publication date: 19-Jun-2024
https://dl.acm.org/doi/10.1145/3657640
Zhao JLi LZhang MLuo ZZhao XZhou X(2024)A Just-In-Time Framework for Continuous Routing2024 IEEE 40th International Conference on Data Engineering (ICDE)10.1109/ICDE60146.2024.00350(4600-4613)Online publication date: 13-May-2024
https://doi.org/10.1109/ICDE60146.2024.00350
Xu ZLi LZhang MXu YZhou X(2024)Managing the Future: Route Planning Influence Evaluation in Transportation Systems2024 IEEE 40th International Conference on Data Engineering (ICDE)10.1109/ICDE60146.2024.00347(4558-4572)Online publication date: 13-May-2024
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Gong ZZeng YChen L(2024)Querying Shortest Path on Large Time-Dependent Road Networks with Shortcuts2024 IEEE 40th International Conference on Data Engineering (ICDE)10.1109/ICDE60146.2024.00345(4532-4544)Online publication date: 13-May-2024
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Wang YChu JYuan YGu YJi HZhang H(2024)Label Constrained Reachability Queries on Time Dependent Graphs2024 IEEE 40th International Conference on Data Engineering (ICDE)10.1109/ICDE60146.2024.00251(3244-3256)Online publication date: 13-May-2024
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