Approximating the Bandwidth for Asteroidal Triple-Free Graphs
Approximating the Bandwidth for Asteroidal Triple-Free Graphs
复制标题
近似小行星三自由图的带宽
DOI:
10.1006/jagm.1998.0997
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
H. Müller
中科院分区:
文献类型:
--
作者:
T. Kloks;D. Kratsch;H. Müller
We show that there is an O(n3) algorithm to approximate the bandwidth of an AT-free graph with worst case performance ratio 2. Alternatively, at the cost of the approximation factor, we can also obtain an O(e+n log n) algorithm to approximate the bandwidth of an AT-free graph within a factor 4. For the special cases of permutation graphs and trapezoid graphs we obtain O(n log n) algorithms with worst case performance ratio 2. For cocomparability graphs we obtain an O(n2) algorithm with worst case performance ratio 3.