首页 | 本学科首页   官方微博 | 高级检索  
     


Total Travel Cost in Stochastic Assignment Models
Authors:Martin L. Hazelton
Affiliation:(1) Department of Mathematics and Statistics M019, University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
Abstract:Deterministic assignment models are sometimes used to approximate properties of more complex stochastic models. One property that is of particular interest from a system optimization viewpoint is total travel cost. This paper looks at the approximation of mean total travel cost. It is shown that deterministic models will underestimate this quantity in many common situations. Furthermore, discrepancies between total travel cost under the different modelling frameworks can lead to situations in which network modifications which are detrimental according to a stochastic model appear beneficial when using the natural deterministic approximation. We conclude that estimation of mean travel cost in stochastic assignment is often best done using simulation. Some suggestions are made regarding the implementation of traffic assignment simulation.
Keywords:Approximation  Markov chain  simulation  stationary distribution  transport network
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号