On Compact Directed Acyclic Word Graphs

Abstract : The Directed Acyclic Word Graph (DAWG) is a space-efficient data structure to treat and analyze repetitions in a text, especially in DNA genomic sequences. Here, we consider the Compact Directed Acyclic Word Graph of a word. We give the first direct algorithm to construct it. It runs in time linear in the length of the string on a fixed alphabet. Our implementation requires half the memory space used by DAWGs.
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Maxime Crochemore, Renaud Vérin. On Compact Directed Acyclic Word Graphs. Mycielski J., Rozenberg G., Salomaa A. Structures in Logic and Computer Science, 1261, Springer-Verlag, pp.192-211, 1997, LNCS. ⟨hal-00620801⟩

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