Abstract:Given a set of k strings I, their longest common subsequence (LCS) is the string with the maximum length that is a subset of all the strings in I. A data-structure for this problem preprocesses I into a data-structure such that the LCS of a set of query strings Q with the strings of I can be computed faster. Since the problem is NP-hard for arbitrary k, we allow an error that allows some characters to be replaced by other characters. We define the approximation version of the problem with an extra input m, whi… Show more
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