Forbidden-Set Distance Labels for Graphs of Bounded Doubling Dimension
Forbidden-Set Distance Labels for Graphs of Bounded Doubling Dimension
复制标题
有界倍维图的禁止设置距离标签
DOI:
10.1145/2818694
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
D. Peleg
中科院分区:
文献类型:
--
作者:
Ittai Abraham;S. Chechik;C. Gavoille;D. Peleg
This article proposes a forbidden-set labeling scheme for the family of unweighted graphs with doubling dimension bounded by α. For an n-vertex graph G in this family, and for any desired precision parameter ε > 0, the labeling scheme stores an O(1 + ε− 1)2αlog 2n-bit label at each vertex. Given the labels of two end-vertices s and t, and the labels of a set F of “forbidden” vertices and/or edges, our scheme can compute, in O(1 + ε − 1)2α · |F|2log n time, a 1 + ε stretch approximation for the distance between s and t in the graph G∖F. The labeling scheme can be extended into a forbidden-set labeled routing scheme with stretch 1 + ε for graphs of bounded doubling dimension.