Labeling schemes for flow and connectivity
Labeling schemes for flow and connectivity
复制标题
流量和连通性的标签方案
DOI:
10.1137/s0097539703433912
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
D. Peleg
中科院分区:
文献类型:
--
作者:
Michal Katz;Nir A. Katz;Amos Korman;D. Peleg
This paper studies labeling schemes for flow and connectivity functions. A flow labeling scheme using <i>O</i>(log <i>n</i> ṡ log <i>ŵ</i>)-bit labels is presented for general <i>n</i>-vertex graphs with maximum (integral) capacity <i>ŵ</i>. This is shown to be asymptotically optimal. For edge-connectivity, this yields a tight bound of Θ(log<sup>2</sup> <i>n</i>) bits. A <i>k</i>-vertex connectivity labeling scheme is then given for general <i>n</i>-vertex graphs using at most 3 log <i>n</i> bits for <i>k</i> = 2, 5 log <i>n</i> bits for <i>k</i> = 3 and 2<sup><i>k</i></sup> log <i>n</i> bits for <i>k</i> > 3. Finally, a lower bound of Ω(<i>k</i> log <i>n</i>) is established for <i>k</i>-vertex connectivity on <i>n</i>-vertex graphs where <i>k</i> is polylogarithmic in <i>n.</i>