Abstract
We present a new parallel tree contraction scheme which takes O(log n) contraction phases to reduce a tree to its root, and implement this scheme in O(log n log log n) time using O(n/ log log n) processors on an arbitrary CROW PRAM. We then show a data structure to represent a connected distance-hereditary graph G in the form of a rooted tree. Applying our tree contraction scheme on the above data structure together with graph theoretical properties, we solve the problems of finding a minimum connected γ-dominating set and finding a minimum γ-dominating clique on G in O(log n log log n) time using O((n + m) /log log n) processors on an arbitrary CROW PRAM, where n and m are the number of vertices and edges in G, respectively.
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Hsieh, SY., Hoe, CW., Hsu, TS., Ko, MT., Chen, GH. (1998). A new simple parallel tree contraction scheme and its application on distance-hereditary graphs. In: Ferreira, A., Rolim, J., Simon, H., Teng, SH. (eds) Solving Irregularly Structured Problems in Parallel. IRREGULAR 1998. Lecture Notes in Computer Science, vol 1457. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0018548
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DOI: https://doi.org/10.1007/BFb0018548
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