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On the parallel computation of the algebraic path problem

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3 Author(s)
Gen-Huey Chen ; Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Biing-Feng Wang ; Chi-Jen Lu

The algebraic path problem is a general description of a class of problems, including some important graph problems such as transitive closure, all pairs shortest paths, minimum spanning tree, etc. In this work, the algebraic path problem is solved on a processor array with a reconfigurable bus system. The proposed algorithms are based on repeated matrix multiplications. The multiplication of two n×n matrices takes O(log n) time in the worst case, but, for some special cases, O(1) time is possible. It is shown that three instances of the algebraic path problem, transitive closure, all pairs shortest paths, and minimum spanning tree, can be solved in O(log n) time, which is as fast as on the CRCW PRAM

Published in:

Parallel and Distributed Systems, IEEE Transactions on  (Volume:3 ,  Issue: 2 )