On the generalized constrained longest common subsequence problems

On the generalized constrained longest common subsequence problems

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Article ID: iaor20114167
Volume: 21
Issue: 3
Start Page Number: 383
End Page Number: 392
Publication Date: Apr 2011
Journal: Journal of Combinatorial Optimization
Authors: ,
Keywords: programming: dynamic
Abstract:

We investigate four variants of the longest common subsequence problem. Given two sequences X, Y and a constrained pattern P of lengths m, n, and ρ, respectively, the generalized constrained longest common subsequence (GC‐LCS) problems are to find a longest common subsequence of X and Y including (or excluding) P as a subsequence (or substring). We propose new dynamic programming algorithms for solving the GC‐LCS problems in O(mn ρ) time. We also consider the case where the number of constrained patterns is arbitrary.

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