Optimally solving a transportation problem using Voronoi diagrams
Optimally solving a transportation problem using Voronoi diagrams
复制标题
使用 Voronoi 图优化解决运输问题
DOI:
10.1016/j.comgeo.2013.05.005
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
Günter Rote
中科院分区:
文献类型:
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作者:
Darius Geiß;Rolf Klein;Rainer Penninger;Günter Rote
We consider the following variant of the well-known Monge–Kantorovich transportation problem. Let S be a set of n point sites in Rd. A bounded set C⊂Rdis to be distributed among the sites p∈S such that (i) each p receives a subset Cpof prescribed volume and (ii) the average distance of all points z of C from their respective sites p is minimized. In our model, volume is quantified by a measure μ, and the distance between a site p and a point z is given by a function dp(z). Under quite liberal technical assumptions on C and on the functions dp(⋅) we show that a solution of minimum total cost can be obtained by intersecting with C the Voronoi diagram of the sites in S, based on the functions dp(⋅) equipped with suitable additive weights. Moreover, this optimum partition is unique, up to sets of measure zero. Unlike the deep analytic methods of classical transportation theory, our proof is based directly on simple geometric arguments.
DOI:
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发表时间:
2009
期刊:
Computational geometry
影响因子:
--
作者:
G. Rote
通讯作者:
G. Rote
DOI:
10.1137/1.9781611973099.29
发表时间:
2012
期刊:
J. Comput. Geom.
影响因子:
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作者:
R. Sharathkumar;P. Agarwal
通讯作者:
P. Agarwal