Issue No. 01 - January (1992 vol. 41)

ISSN: 0018-9340

pp: 112-118

DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/12.123389

ABSTRACT

<p>The authors give an efficient parallel algorithm for the string edit problem. The model of computation is a one-way linear array of identical finite-state machines (nodes). The data movement in the array is one-way, from left to right. For inputs of length n, the array uses n nodes. The algorithm can produce the actual minimum-cost edit sequence in linear time. The previous parallel algorithm for this problem runs in O(n) time on a one-way two-dimensional array of finite-state machines using n/sup 2/ nodes. The best serial (RAM) algorithm for the problem takes O(n/sup 2//log n) time and space. Applications to other problems such as the longest common subsequence and approximate pattern matching are discussed.</p>

INDEX TERMS

string editing; one-way linear array; finite-state machines; parallel algorithm; model of computation; minimum-cost edit sequence; linear time; one-way two-dimensional array; RAM; longest common subsequence; approximate pattern matching; finite automata; parallel algorithms.

CITATION

O.H. Ibarra, H. Wang, T. Jiang, "String Editing on a One-Way Linear Array of Finite-State Machines",

*IEEE Transactions on Computers*, vol. 41, no. , pp. 112-118, January 1992, doi:10.1109/12.123389