Deciding Nondeterministic Hierarchy of Deterministic Tree Automata

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Reduction of Nondeterministic Tree Automata

We present an efficient algorithm to reduce the size of nondeterministic tree automata, while retaining their language. It is based on new transition pruning techniques, and quotienting of the state space w.r.t. suitable equivalences. It uses criteria based on combinations of downward and upward simulation preorder on trees, and the more general downward and upward language inclusions. Since tr...

متن کامل

Equivalence of Deterministic and Nondeterministic Epsilon Automata

For simplicity, we adopt the following convention: x, y, X denote sets, E denotes a non empty set, e denotes an element of E, u, u1, v, v1, v2, w denote elements of Eω, F denotes a subset of Eω, i, k, l denote natural numbers, T denotes a non empty transition-system over F , and S, T denote subsets of T. One can prove the following propositions: (1) If i ≥ k + l, then i ≥ k. (2) For all finite ...

متن کامل

Deciding Equivalence of Deterministic Pushdown Automata

Deterministic pushdown automata (DPDA) are a class of simple yet powerful models of computation. It has a finite set of states and a (pushdown) stack. Depending on the current state, the symbol at the top of the stack, and the symbol of the input word that has just been scanned, the automaton moves to a new state, either pushes or pops a symbol on the stack, and it is ready to scan the next sym...

متن کامل

Explorer Reduction of Nondeterministic Tree Automata

We present an efficient algorithm to reduce the size of nondeterministic tree automata, while retaining their language. It is based on new transition pruning techniques, and quotienting of the state space w.r.t. suitable equivalences. It uses criteria based on combinations of downward and upward simulation preorder on trees, and the more general downward and upward language inclusions. Since tr...

متن کامل

Random Generation of Nondeterministic Tree Automata

Algorithms for (nondeterministic) finite-state tree automata (NTA) are often tested on random NTA, in which all internal transitions are equiprobable. The run-time results obtained in this manner are usually overly optimistic as most such generated random NTA are trivial in the sense that the number of states of an equivalent minimal deterministic finite-state tree automaton is extremely small....

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Electronic Notes in Theoretical Computer Science

سال: 2005

ISSN: 1571-0661

DOI: 10.1016/j.entcs.2004.05.015