Complementing deterministic tree-walking automata
نویسندگان
چکیده
منابع مشابه
Complementing deterministic tree-walking automata
We consider various kinds of deterministic tree-walking automata, with and without pebbles, over ranked and unranked trees. For each such kind of automata we show that there is an equivalent one which never loops. The main consequence of this result is the closure under complementation of the various types of automata we consider with a focus on the number of pebbles used in order to complement...
متن کاملComplementing Semi-deterministic Büchi Automata
We introduce an efficient complementation technique for semi-deterministic Büchi automata, which are Büchi automata that are deterministic in the limit: from every accepting state onward, their behaviour is deterministic. It is interesting to study semi-deterministic automata, because they play a role in practical applications of automata theory, such as the analysis of Markov decision processe...
متن کاملWeighted Tree-Walking Automata
We define weighted tree-walking automata. We show that the class of tree series recognizable by weighted tree-walking automata over a commutative semiring K is a subclass of the class of regular tree series over K. If K is not a ring, then the inclusion is strict.
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ژورنال
عنوان ژورنال: Information Processing Letters
سال: 2006
ISSN: 0020-0190
DOI: 10.1016/j.ipl.2005.09.017