NP-hard graph problems and boundary classes of graphs

被引:61
作者
Alekseev, V. E. [1 ]
Boliac, R. [2 ]
Korobitsyn, D. V. [1 ]
Lozin, V. V. [2 ]
机构
[1] Univ Nizhny Novgorod, Nizhnii Novgorod 603950, Russia
[2] Rutgers State Univ, RUTCOR, Piscataway, NJ 08854 USA
关键词
computational complexity; hereditary class of graphs;
D O I
10.1016/j.tcs.2007.09.013
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
Any graph problem, which is NP-hard in general graphs, becomes polynomial-time solvable when restricted to graphs in special classes. When does a difficult problem become easy? To answer this question we study the notion of boundary classes. In the present paper we define this notion in its most general form, describe several approaches to identify boundary classes and apply them to various graph problems. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:219 / 236
页数:18
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