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    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/29185


    題名: The recognition of geodetically connected graphs
    作者: Chang,JM;Ho,CW
    貢獻者: 資訊工程研究所
    關鍵詞: ALGORITHMS;HYPERGRAPHS
    日期: 1998
    上傳時間: 2010-06-29 20:15:48 (UTC+8)
    出版者: 中央大學
    摘要: Let G = (V,E) be a graph with vertex set V of size n and edge set E of size m. A vertex nu is an element of V is called a hinge vertex if the distance of any two vertices becomes longer after ii is removed. A graph without hinge vertex is called a hinge-free graph. In general, a graph G is k-geodetically connected or k-GC for shea if G can tolerate any k-1 vertices failures without increasing the distance among all the remaining vertices. In this paper, we show that recognizing a graph G to be k-GC for the largest value of k can be solved in O(nm) time. In addition, more efficient algorithms for recognizing the L-GC property on some special graphs are presented. These include the O(n + m) time algorithms on strongly chordal graphs (if a strong elimination ordering is given), ptolemaic graphs, and interval graphs, and an O(n(2)) time algorithm on undirected path graphs (if a characteristic tree model is given). Moreover, we show that if the input graph G is not hinge-free then finding all hinge vertices of G can be solved in the same time complexity on the above classes of graphs. (C) 1998 Elsevier Science B.V.
    關聯: INFORMATION PROCESSING LETTERS
    顯示於類別:[資訊工程研究所] 期刊論文

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