VERTEX-COVER是NP完全的: 相关知识点: 试题来源: 解析 证明: 这里给出一个从3SAT到VERTEX-COVER 的在多项式时间内运算的规约的细节内容,该规约把布尔公式¢映射为一个图G和值k。对于¢中的每个变量x,产生一条连接着两个结点的边。把这个构件中的两个结点标记为。把x赋值为TRUE对应于顶点覆盖选择该边的左...
NP-completefeedback vertex setfinite automata/ C1160 Combinatorial mathematics C4220 Automata theoryStarting from the vertex cover problem, this paper obtains a more particular NP-complete problem (comparing with the feedback vertex set problem) and its counterpart in finite automata theory...
摘要: Starting from the vertex cover problem, this paper obtains a more particular NP-complete problem (comparing with the feedback vertex set problem) and its counterpart in finite automata theory关键词: Theoretical or Mathematical/ finite automata set theory/ vertex cover NP-complete feedback ...
As it is NP complete problem, we can have an approximate time algorithm to solve the vertex cover problem. We will modify the algorithm to have an algorithm which can be solved in polynomial time and which will give near to optimum solution. It is a simple algorithm which will be based ...
The vertex cover problem is a classical NP–complete problem for which the best worstcase approximation ratio is 2–o(1). In this paper, we use a collection of simple graph transformations, each of which guarantees an approximation ratio of 3 2 , to find approximate vertex covers for a lar...
The vertex cover problem is one of the six "basic" NP-complete problems according to Garey and Johnson[ 4 ]. Therefore, the problem cannot be solved in polynomial time unless P \\( { = } \\) NP. However, the NP-completeness of the problem does not obviate the need for solving it ...
vertex of unbounded degree, the problem immediately becomes NP-complete for any fixed选择语言:从 到 翻译结果1翻译结果2 翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 无限度的顶点,问题立刻变得NP-完整的任何固定 翻译结果2复制译文编辑译文朗读译文返回顶部 正在翻译,请等待......
These graph problems are usually NP-hard and hence there is no efficient algorithm for solving them, unless P= NP. One way to overcome this hardness is to solve the prob... M Hajiaghayi 被引量: 34发表: 2001年 Harnessing Genetic Algorithm for Vertex Cover Problem The problem of finding ...
Solving min ones 2-sat as fast as vertex cover The problem of finding a satisfying assignment that minimizes the number of variables that are set to 1 is NP-complete even for a satisfiable 2-SAT formula... N Misra,NS Narayanaswamy,V Raman,... - 《Theoretical Computer Science》 被引量:...
In the NP-complete problem Vertex Cover, one is given a graph G and an integer k and are asked whether there exists a vertex set S ⊆ V (G) with size at most k such that every edge of the graph is incident to a vertex in S. In this thesis we explore techniques to solve Verte...