Search and Delivery Man Problems: When are depth-first paths optimal?
Search and Delivery Man Problems: When are depth-first paths optimal?
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搜索和送货员问题:深度优先路径何时是最佳的?
DOI:
10.1016/j.ejor.2020.02.026
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发表时间:
2020
影响因子:
6.4
通讯作者:
Lidbetter, Thomas
中科院分区:
文献类型:
--
作者:
Alpern, Steve;Lidbetter, Thomas
Lethbe a probability measure on the nodes and arcs of a networkQ, viewed either as the location of a hidden object to be found or as the continuous distribution of customers receiving packages. We wish to find a trajectory starting from a specified root, or depotOthat minimizes the expected search or delivery time. We call such a trajectory optimal. WhenQis a tree, we ask for whichhthere is an optimal trajectory that is depth-first, and we find sufficient conditions and in some cases necessary and sufficient conditions onh. A consequence of our analysis is a determination of the optimal depot location in the Delivery Man Problem, correcting an error in the literature. We concentrate mainly on the search problem, with the Delivery Man Problem arising as a special case.
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DOI:
10.1145/3188745.3188824
发表时间:
2018
期刊:
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影响因子:
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作者:
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影响因子:
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发表时间:
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期刊:
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影响因子:
--
作者:
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通讯作者:
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