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On input-revolving ...
On input-revolving deterministic and nondeterministic finite automata
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- Bensch, Suna (author)
- Umeå universitet,Institutionen för datavetenskap
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- Bordihn, Henning (author)
- Institut für Informatik, Universität Potsdam
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- Holzer, Markus (author)
- Institut für Informatik, Universität Giessen
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- Kutrib, Martin (author)
- Institut für Informatik, Universität Giessen
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Information and Computation. - 0890-5401 .- 1090-2651. ; 207, s. 1140-1155
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
Close
- We introduce and investigate input-revolving finite automata, which are (nondeterministic) finite state automata with additional ability to shift the remaining part of the input. Three different modes of shifting are considered, namely revolving to the left, revolving to the right, and circular-interchanging. We investigate the computational capacities of these three types of automata and their deterministic variants, comparing any of the six classes of automata with each other and with further classes of well-known automata. In particular, it is shown that nondeterminism is better than determinism, that is, for all three modes of shifting there is a language accepted by the nondeterministic model but not accepted by any determinstic automaton of the same type. Concerning the closure properties most of the deterministic language families studied are not closed under standard operations. For example, we show that the family of languages accepted by deterministic right-revolving finite automata is an anti-AFL which is not closed under reversal and intersection.
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Keyword
- Extended finite automata
- Formal language operations
- Computational power
- Closure properties
- Anti-abstract family of languages
Publication and Content Type
- ref (subject category)
- art (subject category)
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