Adaptive Routing Optimization In Continuous Time Stochastic Dynamic Networks
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Adaptive Routing Optimization In Continuous Time Stochastic Dynamic Networks
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Author : Mostafa Kamali Ardakani
language : en
Publisher:
Release Date : 2014
Adaptive Routing Optimization In Continuous Time Stochastic Dynamic Networks written by Mostafa Kamali Ardakani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Advanced traveler information systems categories.
Routing in a stochastic and dynamic (time-dependent) network is a crucial transportation problem, particularly as the advanced traveler information system emerges within navigator systems. A new variant of adaptive routing, which assumes perfect online information of continuous real-time link travel time, is proposed. This variant can deal with a dynamic network, which has the most general real-time link travel times with frequent, instantaneous, and sometimes unpredictable changes. The driver's speed profile is also taken into consideration to realistically estimate travel times, which correspondingly involves the stochasticity of links in a dynamic network. An optimization methodology is developed to tackle the dynamic shortest path problem with continuous-time. A decremental approach based on network topology is consequently developed to reduce the network size. The impact of the proposed adaptive routing and the performance of the decremental approach are evaluated in static and dynamic networks under different traffic conditions. The proposed approach can be incorporated within an intelligent vehicle navigation system. In addition, A* algorithm is applied in the decremental approach to speed up the shortest paths optimization process. In order to convert link cost functions to distances to define the potential function in A* algorithm, the weighted metric multidimensional scaling technique is utilized. Moreover, Dijkstra's and the A* algorithms are compared in different networks.
An Optimal Adaptive Routing Algorithm For Large Scale Stochastic Time Dependent Networks
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Author : Jing Ding
language : en
Publisher:
Release Date : 2012
An Optimal Adaptive Routing Algorithm For Large Scale Stochastic Time Dependent Networks written by Jing Ding and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Adaptive routing (Computer network management) categories.
The objective of the research is to study optimal routing policy (ORP) problems and to develop an optimal adaptive routing algorithm practical for large-scale Stochastic Time-Dependent (STD) real-life networks, where a traveler could revise the route choice based upon en route information. The routing problems studied can be viewed as counterparts of shortest path problems in deterministic networks. A routing policy is defined as a decision rule that specifies what node to take next at each decision node based on realized link travel times and the current time. The existing routing policy algorithm is for explorative purpose and can only be applied to hypothetical simplified network. In this research, important changes have been made to make it practical in a large-scale real-life network. Important changes in the new algorithm include piece-wise linear travel time representation, turn-based, label-correcting, criterion of stochastic links, and dynamic blocked links. Complete dependency perfect online information (CDPI) variant is then studied in a real-life network (Pioneer Valley, Massachusetts). Link travel times are modeled as random variables with time-dependent distributions which are obtained by running Dynamic Traffic Assignment (DTA) using data provided by Pioneer Valley Planning Commission (PVPC). A comprehensive explanation of the changes by comparing the two algorithms and an in-depth discussion of the parameters that affects the runtime of the new algorithm is given. Computational tests on the runtime changing with different parameters are then carried out and the summary of its effectiveness are presented. To further and fully understand the applicability and efficiency, this algorithm is then tested in another large-scale network, Stockholm in Sweden, and in small random networks. This research is also a good starting point to investigate strategic route choice models and strategic route choice behavior in a real-life network. The major tasks are to acquire data, generate time-adaptive routing policies, and estimate the runtime of the algorithm by changing the parameters in two large-scale real-life networks, and to test the algorithm in small random networks. The research contributes to the knowledge base of ORP problems in stochastic time-dependent (STD) networks by developing an algorithm practical for large-scale networks that considers complete time-wise and link-wise stochastic dependency.
Integer Programming And Combinatorial Optimization
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Author : Gerard Cornuejols
language : en
Publisher: Springer
Release Date : 2007-03-05
Integer Programming And Combinatorial Optimization written by Gerard Cornuejols and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-03-05 with Mathematics categories.
This book constitutes the refereed proceedings of the 7th International Conference on Integer Programming and Combinatorial Optimization, IPCO'99, held in Graz, Austria, in June 1999. The 33 revised full papers presented were carefully reviewed and selected from a total of 99 submissions. Among the topics addressed are theoretical, computational, and application-oriented aspects of approximation algorithms, branch and bound algorithms, computational biology, computational complexity, computational geometry, cutting plane algorithms, diaphantine equations, geometry of numbers, graph and network algorithms, online algorithms, polyhedral combinatorics, scheduling, and semidefinite programs.
Transportation And Traffic Theory 2009 Golden Jubilee
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Author : William H. K. Lam
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-09-01
Transportation And Traffic Theory 2009 Golden Jubilee written by William H. K. Lam 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 2009-09-01 with Business & Economics categories.
th It is our great privilege and honor to present the proceedings of the 18 International Symposium on Transportation and Traffic Theory (ISTTT), held at The Hong Kong Polytechnic University in Hong Kong, China on 16-18 July 2009. th The 18 ISTTT is jointly organized by the Hong Kong Society for Transportation Studies and Department of Civil and Structural Engineering of The Hong Kong Polytechnic University. The ISTTT series is the main gathering for the world’s transportation and traffic theorists, and those who are interested in contributing to or gaining a deep understanding of traffic and transportation phenomena in order to better plan, design and manage the transportation system. Although it embraces a wide range of topics, from traffic flow theories and demand modeling to road safety and logistics and supply chain modeling, the ISTTT is hallmarked by its intellectual innovation, research and development excellence in the treatment of real-world transportation and traffic problems. The ISTTT prides itself in the extremely high quality of its proceedings. Previous ISTTT conferences were held in Warren, Michigan (1959), London (1963), New York (1965), Karlsruhe (1968), Berkeley, California (1971), Sydney (1974), Kyoto (1977), Toronto (1981), Delft (1984), Cambridge, Massachusetts (1987), Yokohama (1990), Berkeley, California (1993), Lyon (1996), Jerusalem (1999), Adelaide (2002), College Park, Maryland (2005), and London (2007). th th This 18 ISTTT celebrates the 50 Anniversary of this premier conference series.
Time Varying Network Optimization
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Author : Dan Sha
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-05-05
Time Varying Network Optimization written by Dan Sha 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 2007-05-05 with Computers categories.
This text describes a series of models, propositions, and algorithms developed in recent years on time-varying networks. References and discussions on relevant problems and studies that have appeared in the literature are integrated in the book. Its eight chapters consider problems including the shortest path problem, the minimum-spanning tree problem, the maximum flow problem, and many more. The time-varying traveling salesman problem and the Chinese postman problem are presented in a chapter together with the time-varying generalized problem. While these topics are examined within the framework of time-varying networks, each chapter is self-contained so that each can be read – and used – separately.
Modern Optimization Modelling Techniques
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Author : Roberto Cominetti
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-08-28
Modern Optimization Modelling Techniques written by Roberto Cominetti 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 2012-08-28 with Business & Economics categories.
The theory of optimization, understood in a broad sense, is the basis of modern applied mathematics, covering a large spectrum of topics from theoretical considerations (structure, stability) to applied operational research and engineering applications. The compiled material of this book puts on display this versatility, by exhibiting the three parallel and complementary components of optimization: theory, algorithms, and practical problems. The book contains an expanded version of three series of lectures delivered by the authors at the CRM in July 2009. The first part is a self-contained course on the general moment problem and its relations with semidefinite programming. The second part is dedicated to the problem of determination of Nash equilibria from an algorithmic viewpoint. The last part presents congestion models for traffic networks and develops modern optimization techniques for finding traffic equilibria based on stochastic optimization and game theory.
Proceedings Of The Fourteenth Annual Acm Siam Symposium On Discrete Algorithms
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Author :
language : en
Publisher: SIAM
Release Date : 2003-01-01
Proceedings Of The Fourteenth Annual Acm Siam Symposium On Discrete Algorithms written by and has been published by SIAM this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-01-01 with Mathematics categories.
From the January 2003 symposium come just over 100 papers addressing a range of topics related to discrete algorithms. Examples of topics covered include packing Steiner trees, counting inversions in lists, directed scale-free graphs, quantum property testing, and improved results for directed multicut. The papers were not formally refereed, but attempts were made to verify major results. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com)
Stochastic Networks
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Author : Frank Kelly
language : en
Publisher: Cambridge University Press
Release Date : 2014-02-27
Stochastic Networks written by Frank Kelly and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-02-27 with Computers categories.
A compact, highly-motivated introduction to some of the stochastic models found useful in the study of communications networks.
Knowledge Based Intelligent Information And Engineering Systems
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Author : Bogdan Gabrys
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-09-27
Knowledge Based Intelligent Information And Engineering Systems written by Bogdan Gabrys 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 2006-09-27 with Business & Economics categories.
The three volume set LNAI 4251, LNAI 4252, and LNAI 4253 constitutes the refereed proceedings of the 10th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, KES 2006, held in Bournemouth, UK, in October 2006. The 480 revised papers presented were carefully reviewed and selected from about 1400 submissions. The papers present a wealth of original research results from the field of intelligent information processing.
Experimental Algorithms
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Author : Panos M. Pardalos
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-04-28
Experimental Algorithms written by Panos M. Pardalos 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 2011-04-28 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.