Approximate String Matching using a Bidirectional Index
Résumé
We study strategies of approximate pattern matching that exploit bidirectional text indexes, extending and generalizing ideas of [6]. We introduce a formalism, called search schemes, to specify search strategies of this type, then develop a probabilistic measure for the efficiency of a search scheme, prove several combinatorial results on e cient search schemes, and nally, provide experimental computations supporting the superiority of our strategies.