Computing the Minimum Fill-in is NP^Complete
@article{Yannakakis1981ComputingTM, title={Computing the Minimum Fill-in is NP^Complete}, author={Mihalis Yannakakis}, journal={Siam Journal on Algebraic and Discrete Methods}, year={1981}, volume={2}, pages={77-79} }
We show that the following problem is NP-complete. Given a graph, find the minimum number of edges (fill-in) whose addition makes the graph chordal. This problem arises in the solution of sparse symmetric positive definite systems of linear equations by Gaussian elimination.
768 Citations
Algorithms for Maximum Matching and Minimum Fill-in on Chordal Bipartite Graphs
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A linear time algorithm is given for the maximum matching problem and an O(n4) time algorithm for the minimum fill-in problem on chordal bipartite graphs improving previous results.
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Minimum fill-in for chordal bipartite graphs
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Chordal bipartite graph are exactly those bipartite graph in which every cycle of length at least six has a chord. The MINIMUM FILL-IN problem is the problem of finding a chordal embedding of the…
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It is proved in this paper that the pathwidth problem is NP-hard for particular subclasses of chordal graphs, and it is deduced that the problem remains hard for weighted trees.
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A graph is chordal if every cycle of length at least four contains a chord—that is, an edge connecting two nonconsecutive vertices of the cycle. Several classical applications in sparse linear syst...
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We show that for a graph G on n vertices its treewidth and minimum fill-in can be computed roughly in 1.9601 n time. Our result is based on a combinatorial proof that the number of minimal separators…
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We prove a 1-1 correspondence between maximal sets of pairwise parallel minimal separators of a graph and its minimal chordal triangulations. This yields polynomial-time algorithms to determine the…
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