Incremental construction of minimal acyclic finite-state automata
Incremental construction of minimal acyclic finite-state automata
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DOI:
10.1162/089120100561601
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发表时间:
2000-03-01
影响因子:
9.3
通讯作者:
Watson, RE
中科院分区:
文献类型:
--
作者:
Daciuk, J;Mihov, S;Watson, RE
In this paper, we describe a new method for constructing minimal, deterministic, acyclic finite-state automata from a set of strings. Traditional methods consist of two phases: the first to construct a trie, the second one to minimize it. Our approach is to construct a minimal automaton in a single phase by adding new strings one by one and minimizing the resulting automaton on-the-fly. We present a general algorithm as well as a specialization that relies upon the lexicographical ordering oft he input strings. Our method is fast and significantly lowers memory requirements in comparison to other methods.