Route Planning In Road Networks
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Route Planning In Road Networks
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Author : Dominik Schultes
language : en
Publisher: VDM Publishing
Release Date : 2008
Route Planning In Road Networks written by Dominik Schultes and has been published by VDM Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Computers categories.
The continuously increasing demand for mobility more and more frequently asks for the best driving directions to one's destination saving time and money. Using simple-minded approaches to the computation of suitable routes yields slow response times or suboptimal results. Therefore, there is considerable interest in exact and fast speedup techniques, which typically invest some time into a preprocessing step in order to generate auxiliary data that can be used to accelerate all subsequent route planning queries. We present three highly-efficient and provably accurate point-to-point route planning algorithms and one generic many-to-many approach, which computes for given source and target node sets the optimal distances between all source-target node pairs in a very efficient way. The performance is evaluated in an extensive experimental study using large real-world road networks with up to 33 million junctions. This book addresses students, researchers, and software developers that are interested in car navigation systems, route planning services, logistics, or any other application where route planning in road networks plays a crucial role.
Algorithms For Constrained Route Planning In Road Networks
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Author : Michael Norris Rice
language : en
Publisher:
Release Date : 2013
Algorithms For Constrained Route Planning In Road Networks written by Michael Norris Rice and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Electronic surveillance categories.
This dissertation examines advanced pre-processing techniques and query algorithms for efficiently solving several practical, real-world route planning problems for personalized navigation in road networks. Unlike most prior research in this domain, where shortest paths are assumed to be static, this research supports dynamically-constrained shortest path queries in which the resulting solution paths can vary depending on each traveler's unique requirements. Specifically, this research is comprised of two parts, each focusing on a high-level class of constrained route planning problems in road networks. In the first part, we consider route planning problems with avoidance constraints, in which the route is required to avoid certain types of roads (e.g., toll roads, unpaved roads, etc.). In the second part, we consider route planning problems with detour constraints, in which the route is required to visit one or more categorical points of interest along the way (e.g., gas stations, coffee shops, etc.). We consider several specific sub-problems for each of these high-level problems and present extensive experimental results of our proposed algorithms on the continental road networks of North America and Europe (with over 50 million edges and 90 million edges, respectively).
Algorithmics Of Large And Complex Networks
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Author : Jürgen Lerner
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-07-02
Algorithmics Of Large And Complex Networks written by Jürgen Lerner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-07-02 with Computers categories.
A state-of-the-art survey that reports on the progress made in selected areas of this important and growing field, aiding the analysis of existing networks and the design of new and more efficient algorithms for solving various problems on these networks.
Routing Strategies For The Reliable And Efficient Utilization Of Road Networks
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Author : Samitha Samaranayake
language : en
Publisher:
Release Date : 2014
Routing Strategies For The Reliable And Efficient Utilization Of Road Networks written by Samitha Samaranayake and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The research presented in this dissertation aims to develop computationally tractable models and algorithms for the reliable and efficient utilization of capacity restricted transportation networks via route selection and demand redistribution, motivated by the fact that traffic congestion in road networks is a major problem in urban communities. Three related topics are considered, 1) route planning with reliability guarantees, 2) system optimal dynamic traffic assignment, and 3) controlling user equilibrium departure times. Route planning can in many practical settings require finding a route that is both fast and reliable. However, in most operational settings, only deterministic shortest paths are considered, and even when the link travel-times are known to be stochastic the common approach is to simply minimize the expected travel-time. This approach does not account for the variance of the travel-time and gives no reliability guarantees. In many cases, travelers have hard deadlines or are willing to sacrifice some extra travel-time for increased travel-time reliability, such as in commercial routing applications where delivery guarantees need to be met and perishables need to be delivered on time. The research presented in this dissertation develops fast computation techniques for the reliable routing problem known as the stochastic on-time arrival (SOTA) problem, which provides a routing strategy that maximizes the probability of arriving at the destination within a fixed time budget. Selfish user optimal routing strategies can, however, lead to very inefficient traffic equilibria in congested traffic networks. This "Price of Anarchy" can be mitigated using system optimal coordinated routing algorithms. The dissertation considers the system optimal dynamic traffic assignment problem when only a subset of the network agents can be centrally coordinated. A road traffic dynamics model is developed based on the Lighthill-Williams-Richards partial differential equation and a corresponding multi-commodity junction solver. Full Lagrangian paths are assumed to be known for the controllable agents, while only the aggregate split ratios are required for the non-controllable (selfish) agents. The resulting non-linear optimal control problem is solved efficiently using the discrete adjoint method. Spill-back from under-capacitated off-ramps is one of the major causes of congestion during the morning commute. This spill-back induces a capacity drop on the freeway, which then creates a bottleneck for the mainline traffic that is passing by the off-ramp. Therefore, influencing the flow distribution of the vehicles that exit the freeway at the off-ramp can improve the throughput of freeway vehicles that pass this junction. The dissertation studies the generalized morning commute problem where vehicles exiting the freeway at the under-capacitated off-ramp have a fixed desired arrival time and a corresponding equilibrium departure time schedule, and presents strategies to manipulated this equilibrium to maximize throughput on the freeway via incentives or tolls.
2020 5th International Conference On Communication And Electronics Systems Icces
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Author : IEEE Staff
language : en
Publisher:
Release Date : 2020-06-10
2020 5th International Conference On Communication And Electronics Systems Icces written by IEEE Staff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-10 with categories.
5th International Conference on Communication and Electronics Systems (ICCES 2020) is being organized on 10 12, June 2020 ICCES will provide an outstanding international forum for sharing knowledge and results in all fields of Engineering and Technology ICCES provides quality key experts who provide an opportunity in bringing up innovative ideas Recent updates in the in the field of technology will be a platform for the upcoming researchers The conference will be Complete, Concise, Clear and Cohesive in terms of research related to Communication and Electronics systems
Experimental Algorithms
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Author : Panos M. Pardalos
language : en
Publisher: Springer
Release Date : 2011-04-21
Experimental Algorithms written by Panos M. Pardalos and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-21 with Computers categories.
This volume constitutes the refereed proceedings of the 10th International Symposium on Experimental Algorithms, SEA 2011, held in Kolimpari, Chania, Crete, Greece, in May 2011. The 36 revised full papers presented together with 2 invited papers were carefully reviewed and selected from 83 submissions and present current research in the area of design, analysis, and experimental evaluation and engineering of algorithms, as well as in various aspects of computational optimization and its applications.
Capacity Constrained Routing Algorithms For Evacuation Route Planning
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Author : Qingsong Lu
language : en
Publisher:
Release Date : 2006
Capacity Constrained Routing Algorithms For Evacuation Route Planning written by Qingsong Lu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Constraint programming (Computer science) categories.
Evacuation route planning identifies paths in a given transportation network to minimize the time needed to move vulnerable populations to safe destinations. Evacuation route planning is critical for numerous important applications like disaster emergency management and homeland defense preparation. It is computationally challenging because the number of evacuees often far exceeds the capacity, i.e. the number of people that can move along the road segments in a unit time. Linear Programming(LP) based methods using time expanded networks can take hours to days of computation for metropolitan sized problems. In this paper, we propose a new approach, namely a capacity constrained routing planner which models capacity as a time series and generalizes shortest path algorithms to incorporate capacity constraints. We characterize the design space for reducing the computational cost. Analytical cost model and experiment results show that the proposed algorithm is faster than the LP based algorithms and requires less memory. Experimental evaluation using various network configurations also shows that the proposed algorithm produces solutions that are comparable to those produced by LP based algorithms while significantly reducing the computational cost.
Algorithm Engineering
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Author : Lasse Kliemann
language : en
Publisher: Springer
Release Date : 2016-11-10
Algorithm Engineering written by Lasse Kliemann and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-10 with Computers categories.
Algorithm Engineering is a methodology for algorithmic research that combines theory with implementation and experimentation in order to obtain better algorithms with high practical impact. Traditionally, the study of algorithms was dominated by mathematical (worst-case) analysis. In Algorithm Engineering, algorithms are also implemented and experiments conducted in a systematic way, sometimes resembling the experimentation processes known from fields such as biology, chemistry, or physics. This helps in counteracting an otherwise growing gap between theory and practice.
Ipython Interactive Computing And Visualization Cookbook
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Author : Cyrille Rossant
language : en
Publisher: Packt Publishing Ltd
Release Date : 2014-09-25
Ipython Interactive Computing And Visualization Cookbook written by Cyrille Rossant and has been published by Packt Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-25 with Computers categories.
Intended to anyone interested in numerical computing and data science: students, researchers, teachers, engineers, analysts, hobbyists... Basic knowledge of Python/NumPy is recommended. Some skills in mathematics will help you understand the theory behind the computational methods.
Experimental Algorithms
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Author : Catherine C. McGeoch
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-05-08
Experimental Algorithms written by Catherine C. McGeoch and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-05-08 with Computers categories.
This book constitutes the refereed proceedings of the 7th International Workshop on Experimental and Efficient Algorithms, WEA 2008, held in Provincetown, MA, USA, in May/June 2008. The 26 revised full papers were carefully reviewed and selected from numerous submissions and present current research on experimental evaluation and engineering of algorithms, as well as in various aspects of computational optimization and its applications. Special focus is put on the use of experimental methods to guide the design, analysis, implementation, and evaluation of algorithms, heuristics, and optimization programs.