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作者机构:St Louis Univ John Cook Sch Business Dept Operat & Informat Technol Management St Louis MO 63108 USA Univ Iowa Tippie Coll Business Dept Management Sci Iowa City IA 52242 USA
出 版 物:《OPERATIONS RESEARCH》 (运筹学)
年 卷 期:2013年第61卷第1期
页 面:138-154页
核心收录:
学科分类:1201[管理学-管理科学与工程(可授管理学、工学学位)] 07[理学] 070104[理学-应用数学] 0701[理学-数学]
基 金:Executive Council for Graduate and Professional Students at the University of Iowa
主 题:rollout policy approximate dynamic programming stochastic vehicle routing fixed routes
摘 要:We develop a family of rollout policies based on fixed routes to obtain dynamic solutions to the vehicle routing problem with stochastic demand and duration limits (VRPSDL). In addition to a traditional one-step rollout policy, we leverage the notions of the pre- and post-decision state to distinguish two additional rollout variants. We tailor our rollout policies by developing a dynamic decomposition scheme that achieves high quality solutions to large problem instances with reasonable computational effort. Computational experiments demonstrate that our rollout policies improve upon the performance of a rolling horizon procedure and commonly employed fixed-route policies, with improvement over the latter being more substantial.