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Solving an algebraic path problem and some related graph problems on a hyper-bus broadcast network

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5 Author(s)
Horng-Ren Tsai ; Dept. of Inf. Manage., Overseas Chinese Coll. of Commerce, Taichung, Taiwan ; Shi-Jinn Horng ; Shun-Shan Tsai ; Tzong-Wann Kao
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The parallel computation model upon which the proposed algorithms are based is the hyper-bus broadcast network. The hyper-bus broadcast network consists of processors which are connected by global buses only. Based on such an improved architecture, we first design two O(1) time basic operations for finding the maximum and minimum of N numbers each of size O(log N)-bit and computing the matrix multiplication operation of two N×N matrices, respectively. Then, based on these two basic operations, three of the most important instances in the algebraic path problem, the connectivity problem, and several related problems are all solved in O(log N) time. These include the all-pair shortest paths, the minimum-weight spanning tree, the transitive closure, the connected component, the biconnected component, the articulation point, and the bridge problems, either in an undirected or a directed graph, respectively

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Parallel and Distributed Systems, IEEE Transactions on  (Volume:8 ,  Issue: 12 )